Bobcat Loaders 751, 753, 753 High Flow, 753 (G Series) Repair Service Manuals
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Model:
Complete repair service manual with electrical wiring diagrams for Bobcat Loaders 751, 753, 753 High Flow, 753 (G Series), with workshop information to maintain, diagnose, repair, and rebuild like professional mechanics.
Bobcat Loaders 751, 753, 753 High Flow, 753 (G Series) workshop service & repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
6720326 (6-12) - 753 Service Manual.pdf
6720326 (8-90) - 753 Loader Service Manual.pdf
6720326 (8-90) - 753 Service Manual.pdf
6720583 (10-92) - 753, 753H Operation & Maintenance Manual.pdf
6722443 (3-93) - 753, 753H Operation & Maintenance Manual.pdf
6722761 (11-98) - 753, 753H Operation & Maintenance Manual.pdf
6722905 (11-01) - 753, 753H Operation & Maintenance Manual.pdf
6722925 (7-00) - 753L Operation & Maintenance Manual.pdf
6724925 (5-97) - 751 Service Manual.pdf
6724925 (6-12) - 751 Service Manual.pdf
6900090 (6-12) - 753, 753 High Flow Service Manual.pdf
6900090 (6-97) - 753, 753 High Flow Service Manual.pdf
6900370 (4-99) - 751 (Foot Pedal & Hand Control) Operation & Maintenance Manual.pdf
6900374 (6-00) - 753, 753H (Foot Pedal & Hand Controls) Operation & Maintenance Manual.pdf
6900417 (8-98) - 751 Operation & Maintenance Manual.pdf
6900438 (11-01) - 753 Operation & Maintenance Manual.pdf
6900443 (6-12) - 751 Service Manual.pdf
6900443 (9-97) - 751 Service Manual.pdf
6900786 (9-00) - 751 Operation & Maintenance Manual.pdf
6900787 (9-00) - 753 Operation & Maintenance Manual.pdf
6900967 (9-00) - 751 Operation & Maintenance Manual.pdf
6900969 (12-06) - 753 Operation & Maintenance Manual.pdf
6900975 (2-06) - 751 Service Manual.pdf
6900975 (6-12) - 751 Service Manual.pdf
6900976 (2-06) - 753 (G Series) Service Manual.pdf
6900976 (6-12) - 753 (G Series) Service Manual.pdf
6900976 (9-10) - 753 (G Series) Service Manual.pdf
Total Pages: 5,322 pages
File Format: PDF (bookmarked, Searchable, Printable, high quality)
Language: English
TABLE OF CONTENTS
6724925 (5-97) - 751 Service Manual...2
MAINTENANCE SAFETY...4
ALPHABETICAL INDEX...6
CONTENTS...8
FOREWORD...9
SAFETY INSTRUCTIONS...12
SERIAL NUMBER LOCATIONS...14
LOADER SERIAL NUMBER...14
ENGINE SERIAL NUMBER...14
DELIVERY REPORT...14
BOBCAT LOADER IDENTIFICATION...15
PREVENTIVE MAINTENANCE...16
SERVICE SCHEDULE...18
LIFTING AND BLOCKING THE LOADER...19
Procedure...19
TRANSPORTING THE LOADER...20
Procedure...20
TOWING THE LOADER...20
Procedure...20
STOPPING THE BOBCAT LOADER...20
LIFTING THE LOADER...21
Four Point Lift...21
Single Point Lift...21
LIFT ARM SUPPORT DEVICE...22
Engaging The Lift Arm Support Device...22
Disengaging The Lift Arm Support Device...22
OPERATOR CAB...23
Description...23
Raising The Operator Cab...23
Lowering The Operator Cab...25
Emergency Exit...26
SEAT BAR RESTRAINT SYSTEM...27
Description (Foot Pedals)...27
Seat Bar Inspection (Foot Pedals)...27
Seat Bar Maintenance (Foot Pedals)...27
Description (Hand Controls)...28
Seat Bar Inspection (Hand Controls)...28
Seat Bar Maintenance (Hand Controls)...28
AIR CLEANER SERVICE...29
Replacing Filter Element...29
FUEL SYSTEM...30
Fuel Specifications...30
Filling the Fuel Tank...30
Fuel Filter...30
Removing Air From The Fuel System...31
ENGINE LUBRICATION SYSTEM...32
Checking Engine Oil...32
Replacing Oil and Filter...32
ENGINE COOLING SYSTEM...34
Cleaning the Cooling System...34
Checking the Coolant Level...34
Replacing The Coolant...35
Propylene Glycol...35
ALTERNATOR BELT...36
Adjusting The Alternator Belt...36
BOB–TACH...36
FAN GEARBOX...36
Checking And Maintaining...36
HYDRAULIC/HYDROSTATIC SYSTEM...37
Checking And Adding Fluid...37
Replacing Hydraulic/Hydrostatic Filter...37
Replacing Hydraulic Fluid...38
Hydraulic Reservoir Breather Cap...39
SPARK ARRESTOR MUFFLER...40
Cleaning Procedure...40
TIRE MAINTENANCE...41
Wheel Nuts...41
Tire Rotation...41
Tire Mounting...41
FINAL DRIVE TRANSMISSION (CHAINCASE)...42
Checking and Adding Oil...42
Removing Oil From the Chaincase...42
DRIVE BELT...43
Adjusting The Drive Belt Equipped With The Fixed Drive Idler...43
Adjusting The Drive Belt Equipped With The Spring Loaded Drive Ider...45
Drive Belt Replacement...47
LUBRICATION OF THE BOBCAT LOADER...48
Procedure...48
PIVOT PINS...49
REMOTE START SWITCH...50
Procedure...50
HYDRAULIC SYSTEM...52
HYDRAULIC / HYDROSTATIC SCHEMATICS...56
TROUBLESHOOTING...58
HYDRAULIC SYSTEM INFORMATION...59
Flare Connections...59
O–ring Face Seal Connection...59
Straight Thread O–ring Fitting...59
Tubelines And Hoses...59
LIFT CYLINDER(S)...60
Checking The Lift Cylinder(s) For Internal Leakage...60
Removal And Installation...60
TILT CYLINDER...61
Checking The Tilt Cylinder For Internal Leakage...61
Removal And Installation...61
Rod End Seal Replacement...62
HYDRAULIC CYLINDER IDENTIFICATION...63
Lift Cylinder Components...63
Tilt Cylinder Components...64
HYDRAULIC CYLINDERS...65
Disassembly...65
Assembly...67
BICS™ VALVE (S/N 514713000 & Above, S/N 514911453 & Above)...73
Removal...73
Lift Arm By–Pass Orifice...74
Disassembly...74
Check Valve...74
Disassembly...74
Lock Valve...75
Disassembly...75
BICS™ Valve Solenoid...76
Disassembly...76
Assembly...77
Lock Valve...78
Assembly...78
Check Valve...78
Assembly...78
Lift Arm By–Pass Orifice...79
Assembly...79
Installation...80
CONTROL VALVE (S/N 514713000 & Above, S/N 514911453 & Above) ...81
Removal And Installation...81
Identification Chart...84
Disassembly...85
Lift Base End Restrictor Disassembly...85
Load Check Valve Disassembly...85
Main Relief Valve Disassembly...86
Port Relief Valve Disassembly...87
Anti–Cavitation Disassembly...88
Rubber Boot Disassembly...89
Lift Spool And Detent Disassembly...90
Tilt Spool And Centering Spring Disassembly...93
Auxiliary Spool Disassembly...95
Auxiliary Electric Solenoid Disassembly...96
Port–Auxiliary Section Disassembly...97
Cleaning and Inspection...97
Port–Auxiliary Section Assembly...98
Auxiliary Electric Solenoid Assembly...98
Auxiliary Spool Assembly...99
Tilt Spool And Centering Spring Assembly...100
Lift Spool And Detent Assembly...102
Rubber Boot Assembly...104
Anti–Cavitation/Port Relief Valve Assembly...105
Port Relief Valve Assembly...106
Main Relief Valve Assembly...107
Load Check Valve Assembly...107
Spool Seal Installation...109
CONTROL VALVE (S/N 514712999 & Below, S/N 514911452 & Below)...110
Removal And Installation...110
Checking The Main Relief Valve...113
Main Relief Valve Adjustment...114
Main Relief Valve Removal and Installation...114
Identification Chart...115
Disassembly And Assembly...116
Load Check Valve...116
Main Relief Valve...117
Port Relief Valve...117
Anti–Cavitation Valve...118
Rubber Boot...119
Lift Spool Detent...120
Tilt Centering Spring...124
Auxiliary Spool...125
Auxiliary Electric Solenoid...126
Inspection...127
Identification And Installation Of Spool Seal...128
HYDRAULIC PUMP...129
Removal And Installation...129
Checking The Output Of The Hydraulic Pump...131
Disassembly And Assembly...133
Inspection...135
Identification...135
HYDRAULIC FILTER HOUSING...136
Removal And Installation...136
HYDRAULIC FLUID RESERVOIR...137
Removal And Installation...137
CONTROL PEDALS...138
Removal And Installation...138
Pedal Adjustment...138
PEDAL INTERLOCK LINKAGE...139
Removal And Installation...139
Adjustment...140
HYDROSTATIC SYSTEM...142
TROUBLESHOOTING...144
Chart...144
HYDROSTATIC SYSTEM INFORMATION...145
Replenishing Valve Function...145
Checking Charge Pressure...145
CONTROL PANEL...146
Rubber Boot Replacement...148
Removal and Installation...146
Steering Shaft Removal and Installation...147
Steering Shaft Disassembly and Assembly...147
Steering Lever Removal and Installation...148
STEERING LINKAGE...149
Removal and Installation...149
Steering Linkage Adjustment...151
Steering Neutral Adjustment...153
HYDROSTATIC DRIVE MOTOR...155
Removal And Installation...155
Identification...156
Disassembly And Assembly...157
Inspection...161
HYDROSTATIC PUMP...162
Removal And Installation...162
Identification...165
Disassembly And Assembly...167
Inspection...175
Swashplate Pre–Load...177
DRIVE BELT HOUSING...178
Removal And Installation...178
SPRING LOADED DRIVE BELT TENSIONER PULLEY...179
Removal And Installation...179
Identification...180
Disassembly...181
Assembly...182
FIXED DRIVE BELT TENSIONER PULLEY...184
Removal And Installation...184
Identification...185
Disassembly...186
Assembly...188
Checking Pulley End Play...192
OIL COOLER...192
Removal and Installation...192
DRIVE SYSTEM...194
PARKING BRAKE...196
Removal And Installation...196
Disassembly And Assembly...196
PARKING BRAKE DISC...197
Removal And Installation...197
TRACTION LOCK GUIDES...198
Disassembly...198
Assembly...199
CHAINCASE FLUID...201
Removing Oil From The Chaincase...201
CHAINCASE COVERS...202
Center Chaincase Cover Removal And Installation...202
Front Chaincase Cover Removal And Installation...203
Rear Chaincase Cover Removal And Installation...203
MOTOR CARRIER...204
Shaft Seal Replacement...204
Removal And Installation...206
Disassembly...207
Assembly...208
AXLE SEAL...212
Removal and Installation...212
AXLE, SPROCKET AND BEARINGS...214
Removal And Installation...214
DRIVE CHAIN...218
Removal And Installation...218
MAIN FRAME...220
SEAT BAR (W/GAS CYLINDER)...222
Removal And Installation...222
Assembly...224
Compressing The Gas Cylinder...225
SEAT BAR (W/COMPRESSION SPRINGS)...226
Removal And Installation...226
Assembling Components...229
Compression Spring Disassembly And Assembly...229
OPERATOR CAB GAS CYLINDER...230
Removal And Installation...230
Disassembly And Assembly...230
OPERATOR CAB...231
Removal And Installation...231
OPERATOR SEAT...234
Removal And Installation...234
BOB–TACH...235
Removal And Installation...235
Bob–Tach Lever And Wedge...237
Bob–Tach Stops...238
LIFT ARMS...239
Removal And Installation...239
REAR GRILL...243
Removal And Installation...243
FUEL TANK...244
Removal And Installation...244
Fuel Level Sender...245
REAR DOOR...246
Removal And Installation...246
Hood Removal And Installation...247
Bumper Removal And Installation...247
Door Latch Removal And Installation...247
Door Latch And Catch Adjustment...248
ELECTRICAL SYSTEM...250
ELECTRICAL SCHEMATICS...252
TROUBLESHOOTING...278
Chart...278
ELECTRICAL SYSTEM INFORMATION...279
Description...279
Fuse Location...279
BATTERY...280
Removal And Installation...280
Servicing The Battery...281
Using A Booster Battery (Jump Starting)...282
ALTERNATOR...283
Alternator Output Test...283
Rectifier (Diode) Test...283
Alternator Regulator Test...284
Removal And Installation...285
Adjusting The Alternator Belt...285
Disassembly And Inspection...286
Stator Continuity Test...286
Stator Ground Test...286
Rotor Continuity Test...287
Rotor Ground Test...287
Rectifier Continuity (Diode) Test...287
Assembly...288
STARTER...289
Removal And Installation (228000–5210)...289
Removal And Installation (228000–5740)...289
Parts Identification (228000-5210)...290
Disassembly (228000-5210)...291
Inspection And Repair (228000-5210)...296
No Load Test (228000-5210)...299
Assembly (228000-5210)...299
Parts Identification (228000-5740)...306
Disassembly (228000–5740)...307
Inspection And Repair (228000–5740)...312
No Load Test (228000–5740)...315
Assembly (228000–5740)...316
STANDARD INSTRUMENT PANEL...323
Removal And Installation...323
FRONT LIGHTS...324
Removal And Installation...324
RELAY SWITCHES...325
Location...325
Glow Plug Preheat Relay...325
Glow System In Operator Cab...325
Troubleshooting The Glow Plug System...325
Testing The Glow Plug Timer Relay...326
ENGINE SERVICE...328
TROUBLESHOOTING...330
Chart...330
ENGINE SPEED CONTROL...331
Removal And Installation...331
Disassembly...331
RADIATOR...332
Removal And Installation...332
ENGINE MUFFLER...333
Removal And Installation...333
BLOWER HOUSING/FAN GEARBOX...334
Removal And Installation...334
Tension Pulley Removal And Installation...337
Blower Fan Disassembly And Assembly...338
FAN GEARBOX...340
Disassembly...340
Long Housing...340
Short Housing...342
Assembly...345
Long Housing...345
Short Housing...347
Checking Backlash...350
Identification...353
AIR CLEANER...354
Removal And Installation...354
ENGINE...355
Removal And Installation...355
Engine Mount Replacement...360
FLYWHEEL...361
Removal And Installation...361
Flywheel Ring Gear...361
INJECTION PUMP TIMING...362
Checking Procedure...362
Adjusting Injection Pump Timing...363
Injection Pump Return Fitting...363
Testing The Fuel Solenoid...364
Idle Speed Setting...365
TIMING BELT...366
Removal...366
Installation...368
FUEL INJECTION PUMP...369
Removal...369
Installation...370
FUEL INJECTOR NOZZLE...371
Removal And Installation...371
Checking The Injector Nozzle...372
CYLINDER LOCATION & COMPRESSION...372
Data...372
GLOW PLUGS...373
Removal And Installation...373
Checking The Glow Plugs...373
CYLINDER HEAD...374
Removing The Cylinder Head...374
Disassembly Of The Cylinder Head...376
Removing The Combustion Chamber...377
Removing The Heat Shield...377
Installing The Heat Shield...377
Servicing The Cylinder Head...378
Checking The Valves...379
Checking The Valve Springs...379
Checking The Valve Guides...380
Checking The Valve Seats...380
Checking The Combustion Chamber...381
Reassembly Of The Cylinder Head...382
Installing The Cylinder Head...385
ENGINE BLOCK...388
Disassembly Of The Engine...388
Assembly Of The Engine...390
PISTONS AND CONNECTING RODS...394
Disassembly And Assembly...394
Checking The Piston...394
Checking The Crankshaft...395
CRANKSHAFT PULLEY...396
Removal And Installation...396
POSITIVE CRANKCASE VENTILATION VALVE...396
Removal...396
Installation...396
PEUGEOT ENGINE TOOL KIT MEL1474 (Complete Kit)...397
PEUGEOT ENGINE ...399
Chart...399
SYSTEMS ANALYSIS...400
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...402
Inspecting The BICS Controller (Engine STOPPED –Key ON)...402
Inspecting DeactivationOf The Auxiliary Hydraulics System (Engine STOPPED–Key ON)...402
Inspecting The Seat And Seat Bar Sensors (EngineRUNNING)...402
Inspecting The Traction Lock (Engine RUNNING)...402
Inspecting The Lift Arm By–Pass Control...402
Maintenance...403
Troubleshooting Chart...404
Troubleshoot Guide...405
BICS CONTROLLER...405
TRACTION LOCK...406
SEAT SENSOR...407
SEAT BAR SENSOR...408
LIFT LOCK BY–PASS VALVE...409
BICS™ SYSTEM CONTROLLER...410
Removal And Installation...410
Controller Test...411
SEAT BAR SENSOR...412
Removal And Installation...412
Seat Bar Sensor Test...413
SEAT SENSOR...414
Removal And Installation...414
Seat Sensor Test...415
TRACTION LOCK...416
Removal And Installation...416
LIFT LOCK BY–PASS VALVE...418
Removal And Installation (S/N 514712999 & Below,S/N 514911452 & Below)...418
Disassembly and Assembly (S/N 514712999 & Below, S/N 514911452 & Below)...419
Removal And Installation (S/N 514713000 & Above, S/N 514911453 & Above)...420
Disassembly And Assembly (S/N 514713000 & Above, S/N 514911453 & Above)...421
TILT LOCK VALVE...422
Removal And Installation (S/N 514712999 & Below, S/N 514911452 & Below)...422
Disassembly And Assembly (S/N 514712999 & Below, S/N 514911452 & Below)...424
SPECIFICATIONS...426
SKID STEER LOADER SPECIFICATIONS...428
PERFORMANCE...428
CONTROLS...428
ENGINE...428
HYDRAULIC SYSTEM...429
ELECTRICAL...429
DRIVE SYSTEM...429
CAPACITIES...429
TIRES...429
FLOOR PRESSURE...429
VIBRATION DATA...429
ENGINE SPECIFICATIONS...430
Fuel Injection Nozzles...430
Fuel Injection Pump...430
Cylinder Head...430
Valves...430
Valve Springs...431
Valve Guides...431
Combustion Chamber...431
Cylinders...431
Piston Rings...431
Pistons...431
Connecting Rod...432
Crankshaft...432
TORQUE SPECIFICATIONS FOR LOADER...433
Specifications...433
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...435
Specifications...435
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...436
DECIMAL AND MILLIMETER EQUIVALENTS...437
U.S. TO METRIC CONVERSION...437
SERVICE MANUAL REVISIONS...438
751-001...438
6900443 (9-97) - 751 Service Manual...440
MAINTENANCE SAFETY...442
ALPHABETICAL INDEX...444
CONTENTS...446
FOREWORD...448
SAFETY INSTRUCTIONS...450
SERIAL NUMBER LOCATIONS...452
LOADER SERIAL NUMBER...452
ENGINE SERIAL NUMBER...452
DELIVERY REPORT...452
BOBCAT LOADER IDENTIFICATION...453
PREVENTIVE MAINTENANCE...454
SERVICE SCHEDULE...456
LIFTING AND BLOCKING THE LOADER...457
Procedure...457
TRANSPORTING THE LOADER...458
Procedure...458
TOWING THE LOADER...458
Procedure...458
STOPPING THE BOBCAT LOADER...458
LIFTING THE LOADER...459
Four Point Lift...459
Single Point Lift...459
LIFT ARM SUPPORT DEVICE...460
Engaging The Lift Arm Support Device...460
Disengaging The Lift Arm Support Device...461
OPERATOR CAB...462
Description...462
Raising The Operator Cab...462
Lowering The Operator Cab...463
Emergency Exit...464
SEAT BAR RESTRAINT SYSTEM (Foot Pedals)...465
Description...465
Seat Bar Inspection...465
Seat Bar Maintenance...465
SEAT BAR RESTRAINT SYSTEM (Mechanical Hand Controls)...466
Description...466
Seat Bar Inspection...466
Seat Bar Maintenance...466
SEAT BAR RESTRAINT SYSTEM (Advanced Hand Controls)...467
Description...467
Seat Bar Inspection...467
Seat Bar Maintenance...467
AIR CLEANER SERVICE...468
Replacing Filter Element...468
FUEL SYSTEM...470
Fuel Specifications...470
Filling The Fuel Tank...470
Fuel Filter...470
Removing Air From The Fuel System...471
ENGINE LUBRICATION SYSTEM...472
Checking Engine Oil...472
Oil Chart...472
Replacing Oil And Filter...472
ENGINE COOLING SYSTEM...474
Cleaning The Cooling System...474
Checking The Coolant Level...474
Replacing The Coolant...475
ALTERNATOR BELT...476
Adjusting...476
FAN GEARBOX...476
Checking And Maintaining...476
HYDRAULIC/HYDROSTATIC SYSTEM...477
Checking And Adding Fluid...477
Replacing Hydraulic/Hydrostatic Filter...477
Replacing Hydraulic Fluid...478
Breather Cap...479
SPARK ARRESTOR MUFFLER...480
Cleaning Procedure...480
TIRE MAINTENANCE...481
Wheel Nuts...481
Tire Rotation...481
Tire Mounting...481
FINAL DRIVE TRANSMISSION (CHAINCASE)...482
Checking and Adding Oil...482
Removing Oil From The Chaincase...482
DRIVE BELT...483
Adjusting the Drive Belt...483
Replacing The Drive Belt...484
LUBRICATION OF THE BOBCAT LOADER...485
Procedure...485
PIVOT PINS...486
BOB–TACH...487
Inspection and Maintenance...487
REMOTE START SWITCH...488
Procedure...488
HYDRAULIC SYSTEM...490
HYDRAULIC / HYDROSTATIC SCHEMATICS...492
GLOSSARY OF HYDRAULIC/HYDROSTATIC SYMBOLS FOR LOADERS...500
TROUBLESHOOTING...504
HYDRAULIC SYSTEM INFORMATION...505
Tightening Procedures...505
LIFT CYLINDER(S)...506
Checking The Lift Cylinders...506
Removal And Installation...506
TILT CYLINDER...507
Checking The Tilt Cylinder...507
Removal And Installation...507
Rod End Seal Replacement...508
HYDRAULIC CYLINDER IDENTIFICATION...509
Lift Cylinder Components...509
Tilt Cylinder Components...510
HYDRAULIC CYLINDERS...511
Disassembly...511
Assembly...513
MAIN RELIEF VALVE...519
Checking...519
Adjustment...520
Removal And Installation...520
BICS™ VALVE...521
Lift Arm By–Pass Orifice...521
Lock Valve...522
Check Valve...522
BICS™ Valve Solenoid...523
Removal...524
Installation...525
HYDRAULIC CONTROL VALVE...526
Removal And Installation...526
Identification Chart...529
Disassembly...530
Load Check Valve...530
Lift Base End Restrictor...530
Main Relief Valve...531
Port Relief Valve (Lift)...532
Anti–Cavitation...532
Rubber Boot...534
Lift Spool And Detent...535
Tilt Spool And Centering Spring...540
Inspection...542
Auxiliary Spool...543
Auxiliary Electric Solenoid...544
Port–Auxiliary Section...545
Cleaning and Inspection...545
Spool Seal Installation...546
HYDRAULIC PUMP...547
Checking The Output Of The Hydraulic Pump...547
Removal And Installation...549
Disassembly And Assembly...551
Inspection...553
Identification...553
HYDRAULIC FILTER HOUSING...554
Removal And Installation...554
HYDRAULIC FLUID RESERVOIR...555
Removal And Installation...555
CONTROL PEDALS...556
Removal And Installation...556
Pedal Adjustment...556
CONTROL INTERLOCK LINKAGE (Pedal or Mechanical Hand)...557
Adjustment...557
Removal And Installation...558
LIFT LOCK BY–PASS VALVE...559
Removal And Installation...559
Disassembly And Assembly...560
HYDROSTATIC SYSTEM...562
TROUBLESHOOTING...564
HYDROSTATIC SYSTEM INFORMATION...565
Replenishing Valve Function...565
Checking Charge Pressure...565
CONTROL PANEL...566
Removal And Installation...566
Steering Shaft Removal And Installation...567
Steering Shaft Disassembly And Assembly...567
Steering Lever Removal And Installation...568
Rubber Boot Replacement...568
STEERING LINKAGE...569
Removal And Installation...569
Steering Linkage Adjustment...571
HYDROSTATIC DRIVE MOTOR...575
Removal And Installation...575
Parts Identification...576
Disassembly...577
Assembly...582
HYDROSTATIC PUMP...588
Removal And Installation...588
Identification...591
Disassembly And Assembly...593
Inspection...601
DRIVE BELT HOUSING...603
Removal And Installation...603
SPRING LOADED DRIVE BELT TENSIONER PULLEY...605
Removal And Installation...605
Identification...606
Disassembly...607
Assembly...608
OIL COOLER...610
Removal And Installation...610
DRIVE SYSTEM...612
PARKING BRAKE...614
Removal And Installation...614
Disassembly And Assembly...614
PARKING BRAKE DISC...615
Removal And Installation...615
TRACTION LOCK GUIDES...616
Disassembly...616
Assembly...617
CHAINCASE FLUID...619
Removing Oil From The Chaincase...619
CHAINCASE COVERS...620
Center Chaincase Cover Removal And Installation...620
Front Chaincase Cover Removal And Installation...621
Rear Chaincase Cover Removal And Installation...621
MOTOR CARRIER...622
Shaft Seal Replacement...622
Removal And Installation...624
Disassembly...625
Assembly...626
AXLE SEAL...630
Removal and Installation...630
AXLE, SPROCKET AND BEARINGS...632
Removal And Installation...632
DRIVE CHAIN...636
Removal And Installation...636
MAIN FRAME...638
SEAT BAR (W/COMPRESSION SPRINGS)...640
Removal And Installation...640
Assembling Components...643
Compression Spring Disassembly And Assembly...643
OPERATOR CAB GAS CYLINDER...644
Removal And Installation...644
Disassembly And Assembly...644
OPERATOR CAB...645
Removal And Installation...645
OPERATOR SEAT...648
Removal And Installation...648
BOB–TACH...649
Bob–Tach Lever And Wedge...651
Removal And Installation...649
Bob–Tach Stops...652
LIFT ARMS...653
Removal And Installation...653
REAR GRILL...657
Removal And Installation...657
FUEL TANK...658
Removal And Installation...658
Fuel Level Sender...659
REAR DOOR...660
Removal And Installation...660
Door Latch Removal And Installation...661
Door Latch And Catch Adjustment...662
ELECTRICAL SYSTEM...664
ELECTRICAL SCHEMATICS...668
TROUBLESHOOTING...676
ELECTRICAL SYSTEM INFORMATION...677
Description...677
Fuse Location...677
BATTERY...678
Removal And Installation...678
Servicing The Battery...679
Using A Booster Battery (Jump Starting)...680
ALTERNATOR...681
Alternator Output Test...681
Rectifier (Diode) Test...681
Alternator Regulator Test...682
Removal And Installation...683
Adjusting The Alternator Belt...683
Disassembly And Inspection...684
Stator Continuity Test...684
Stator Ground Test...684
Rotor Continuity Test...685
Rotor Ground Test...685
Rectifier Continuity (Diode) Test...685
Assembly...686
STARTER...687
Removal And Installation...687
Parts Identification...688
Disassembly...689
Inspection And Repair...694
No Load Test...697
Assembly...697
STANDARD INSTRUMENT PANEL...704
Removal And Installation...704
FRONT LIGHTS...705
Removal And Installation...705
RELAY SWITCHES...706
Location...706
ENGINE SERVICE...708
TROUBLESHOOTING...710
ENGINE SPEED CONTROL...711
Removal And Installation...711
Disassembly...711
RADIATOR...712
Removal And Installation...712
ENGINE MUFFLER...713
Removal And Installation...713
BLOWER HOUSING/FAN GEARBOX...714
Removal And Installation...714
Tension Pulley Removal And Installation...717
Blower Fan Disassembly And Assembly...718
FAN GEARBOX...720
Identification...720
Disassembly...721
Assembly...726
Checking Backlash...731
AIR CLEANER...734
Removal And Installation...734
ENGINE...735
Removal And Installation...735
Engine Mount Replacement...740
FLYWHEEL...741
Removal And Installation...741
Flywheel Ring Gear...741
ENGINE COMPRESSION...742
Checking...742
GLOW PLUGS...743
Checking The Glow Plugs...743
Removal And Installation...744
FUEL INJECTION PUMP...745
Checking The Injection Pump...745
Adjusting Shut–Off Linkage...745
Removal And Installation...746
Timing The Injection Pump...749
FUEL INJECTION NOZZLES...750
Removal And Installation...750
Checking The Injector Nozzle...752
CYLINDER HEAD...753
Removal And Installation...753
Disassembly And Assembly...754
Servicing The Cylinder Head...755
Top Clearance...755
VALVE, VALVE SEAT AND GUIDE...756
Checking The Valve Guide...756
Valve Spring...758
VALVE CLEARANCE...759
Adjustment...759
ROCKER ARM AND SHAFT...759
Checking...759
TIMING GEARCASE COVER...760
Removal And Installation...760
IDLER GEAR AND CAMSHAFT...762
Servicing The Camshaft...763
Removal And Installation...762
Servicing The Idler Gear And Shaft...764
TIMING GEARS...765
Checking Backlash...765
FUEL CAMSHAFT...766
Removal And Installation...766
Governor...766
CRANKSHAFT GEAR...767
Removal And Installation ...767
OIL PUMP...767
Removal And Installation...767
Oil Pump Service...767
Checking Engine Oil Pressure...768
Relief Valve...768
PISTON AND CONNECTING ROD...769
Removal And Installation...769
Servicing The Piston And Connecting Rod...770
Connecting Rod Alignment...772
CRANKSHAFT AND BEARINGS...773
Removal And Installation...773
Servicing the Crankshaft and Bearings...774
CYLINDER BORE...778
Checking The Cylinder Bore...778
WATER PUMP...779
Disassembly And Assembly...779
SYSTEMS ANALYSIS...780
BICS™ – BOBCAT INTERLOCK CONTROL SYSTEM...782
BICS™ (With Press To Operate Button)...782
Inspecting The BICS™ Controller (Engine STOPPED – Key ON)...782
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED – Key ON)...782
Inspecting The Seat Bar Sensor (Engine RUNNING)...782
Inspecting The Traction Lock (Engine RUNNING)...782
Inspecting The Lift Arm By–Pass Control...782
Additional Inspection For Loaders With Advanced Hand Controls...782
Troubleshooting Chart...783
ADVANCED HAND CONTROLS (AHC)...783
Troubleshooting Chart...783
BICS™ (Without Press To Operate Button)...784
Inspecting The BICS Controller (Engine STOPPED –Key ON)...784
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED–Key ON)...784
Inspecting The Seat And Seat Bar Sensors (Engine RUNNING)...784
Inspecting The Traction Lock (Engine RUNNING)...784
Inspecting The Lift Arm By–Pass Control...784
Maintenance...785
Troubleshooting Chart...786
BICS™ SYSTEM CONTROLLER...787
Troubleshooting Guide...787
Removal And Installation...788
SEAT BAR SENSOR...789
Troubleshooting Guide...789
Seat Bar Sensor Test...790
Removal And Installation...791
BICS™ Controller Seat Bar Sensor Circuit Test...792
SEAT SENSOR...793
Troubleshooting Guide...793
Seat Sensor Test...794
Removal And Installation...795
BICS™ Controller Seat Sensor Circuit Test...796
TRACTION LOCK...797
Troubleshooting Guide...797
Removal And Installation...798
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...800
Controls Identification Chart...800
SPECIFICATIONS...802
LOADER SPECIFICATIONS...804
SPECIFICATIONS...804
PERFORMANCE...804
CONTROLS...804
ENGINE...804
HYDRAULIC SYSTEM...805
ELECTRICAL...805
DRIVE SYSTEM...805
CAPACITIES...805
TIRES...805
FLOOR PRESSURE...805
ENGINE SPECIFICATIONS...806
Fuel Injection Nozzles...806
Fuel Injection Pump...806
Cylinder Head...806
Valves...806
Valve Springs...806
Valve Timing...806
Rocker Arms...806
Camshaft...807
Tappet...807
Cylinders...807
Piston Rings...807
Pistons...807
Connecting Rod...807
Oil Pump...807
Crankshaft...808
Timing Gear...808
Thermostat...808
Crankshaft Re–Grind Data...809
Torque For General Metric Bolts...810
HYDRAULIC CONNECTION SPECIFICATIONS...811
O–Ring Face Seal Connection...811
Straight Thread O–ring Fitting...811
Tubelines And Hoses...811
Flare Fitting...811
O–Ring Flare Fitting...812
Port Seal Fitting...814
TORQUE SPECIFICATIONS FOR LOADER...815
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...816
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...817
DECIMAL AND MILLIMETER EQUIVALENTS...818
U.S. TO METRIC CONVERSION...818
ADVANCE HAND CONTROL SYSTEM (AHC)...820
ELECTRICAL SCHEMATICS W/ADVANCED HAND CONTROL OPTIONS...822
AHC COMPONENTS...828
Identification...828
TROUBLESHOOTING (AHC)...829
Chart...829
ACTUATOR VOLTAGE TEST...831
Procedure...831
HANDLE CONTROL UNIT TEST...834
Procedure...834
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...837
Troubleshooting Chart...837
ADVANCED HAND CONTROLS (AHC)...837
Troubleshooting Chart...837
AHC/PWM CONTROLLER...838
Removal And Installation...838
Description...839
Conditions...840
Troubleshooting Chart...840
Handle Testing...841
Solenoid Coil Testing...841
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)...842
Control Handle Unit Removal And Installation...842
Control Unit Connector...845
Switch Handle Removal And Installation...846
AHC Handle Removal And Installation...849
AHC Handle Disassembly And Assembly...850
AHC Steering Lever Removal And Installation...851
AHC Steering Lever Boot...851
Actuators Removal And Installation...852
Actuators Disassembly And Assembly...853
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) (W/PUSH BUTTON FLOAT)...854
Components Identification...854
Controller Connector And Wire Identification...855
AHC/PWM Controller Removal And Installation...856
Handle Sensor Removal And Installation...857
Handle Sensor Connector...859
Switch Handle Removal And Installation...860
Control Handle Removal And Installation...863
Control Handle Disassembly And Assembly...864
Control Lever Removal And Installation...865
Control Lever Boot...866
Actuators Disassembly And Assembly...867
Components Identification...854
BICS™ VALVE...868
Lift Arm By–Pass Orifice...868
Check Valve...869
Lock Valve...869
BICS™ Valve Solenoid...870
Removal And Installation...871
HYDRAULIC CONTROL VALVE...872
Removal And Installation...872
Identification Chart...874
Disassembly And Assembly...875
Load Check Valve...875
Lift Base End Restrictor...875
Main Relief Valve...876
Port Relief Valve (Lift)...877
Anti–Cavitation/Port Relief Valve...877
Port Relief Valve (Tilt)...878
Anti–Cavitation Valve...878
Rubber Boot...879
Lift And Tilt Spool...880
Inspection...882
Auxiliary Spool...883
Auxiliary Electrical Solenoid...884
Spool Seal Installation...885
H–Port Auxiliary Section...886
SERVICE MANUAL REVISIONS...888
751–1...888
751–2...890
751–3...892
751–4...894
6900975 (2-06) - 751 Service Manual...896
MAINTENANCE SAFETY...898
ALPHABETICAL INDEX...900
CONTENTS...902
FOREWORD...903
SAFETY INSTRUCTIONS...906
Fire Prevention...908
SERIAL NUMBER LOCATIONS...910
Loader Serial Number...910
Engine Serial Number...910
DELIVERY REPORT...910
LOADER IDENTIFICATION...911
SAFETY & MAINTENANCE...912
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...914
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...914
Inspecting Deactivation Of The Auxiliary Hydraulics...914
System (Engine STOPPED - Key ON)...914
Inspecting The Seat Bar Sensor (Engine RUNNING)...914
Inspecting The Traction Lock (Engine RUNNING)...914
Inspecting The Lift Arm By-Pass Control...914
Additional Inspection For Loaders With Advanced...914
Hand Controls (AHC)...914
LIFTING AND BLOCKING THE LOADER...916
Procedure...916
TRANSPORTING THE BOBCAT LOADER...918
Procedure...918
TOWING THE LOADER...920
Procedure...920
LIFT ARM SUPPORT DEVICE...922
Engaging The Lift Arm Support Device...922
Disengaging The Lift Arm Support Device...924
BOB-TACH...926
Inspection and Maintenance...926
OPERATOR CAB...928
Description...928
Raising The Operator Cab...928
Lowering The Operator Cab...929
Emergency Exit...930
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...932
Description...932
Inspecting the Seat Bar...932
Maintaining the Seat Bar...932
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...934
Description...934
Inspecting the Seat Bar...934
Maintaining the Seat Bar...934
REMOTE START...936
Procedure...936
SERVICE SCHEDULE...938
Chart...938
FUEL SYSTEM...940
Fuel Specifications...940
Filling the Fuel Tank...940
Fuel Filter...941
Removing Air From The Fuel System...942
AIR CLEANER SERVICE...944
Checking...944
ENGINE LUBRICATION SYSTEM...946
Checking Engine Oil...946
Oil Chart...946
Replacing Oil And Filter...946
ENGINE COOLING SYSTEM...948
Cleaning The Cooling System...948
Checking The Coolant Level...948
Replacing The Coolant...949
HYDRAULIC/HYDROSTATIC SYSTEM...950
Checking And Adding Fluid...950
Replacing Hydraulic/Hydrostatic Filter...950
Replacing Hydraulic Fluid and Case Dain Filters...951
Breather Cap...952
TIRE MAINTENANCE...954
Wheel Nuts...954
Rotating...954
Mounting...954
LUBRICATION OF THE BOBCAT LOADER...956
Procedure...956
HYDRAULIC SYSTEM...958
HYDRAULIC/HYDROSTATIC SCHEMATICS...960
HYDRAULIC SYSTEM INFORMATION...962
Tighten Procedures...965
Troubleshooting Chart...966
CYLINDER(S)...968
Checking The Lift Cylinders...968
Lift Cylinders Removal And Installation...969
Checking The Tilt Cylinder...970
Tilt Cylinder Removal And Installation...971
Lift Cylinder Identification...973
Tilt Cylinder Identification...974
Disassembly...975
Assembly...977
MAIN RELIEF VALVE...980
Checking...980
Adjustment...981
Removal and Installation...981
BICS™ VALVE...982
Removal And Installation...982
Lift Arm By-Pass Orifice Dissembly And Assembly...983
Check Valve Dissembly And Assembly...984
Lock Valve Dissembly And Assembly...985
Solenoid Dissembly And Assembly...986
Solenoid Testing...987
HYDRAULIC CONTROL VALVE (FOOT CONTROL)...988
Removal And Installation...988
Identification Chart...992
Load Check Valve...993
Main Relief Valve...994
Port Relief Valve...995
Anti-Cavitation Valve...996
Plug...997
Rubber Boot...998
Lift And Tilt Lock Block...999
Lift Spool and Detent...1000
Tilt Spool Removal And Installation...1009
Auxiliary Spool Removal And Installation...1011
Auxiliary Electric Solenoid Disassembly...1012
Port-Auxiliary Section Disassembly...1013
Cleaning And Inspection...1013
HYDRAULIC CONTROL VALVE (AHC)...1014
Removal And Installation...1014
Actuator Removal And Installation...1018
Identification Chart...1019
Lift Base End Restrictor...1020
Load Check Valve...1020
Main Relief Valve...1021
Port Relief Valve...1022
Anti-Cavitation Valve...1023
Plug...1024
Lift Spool Removal And Installation...1025
Tilt Spool Removal And Installation...1026
Lift and Tilt Spool Disassembly And Assembly...1027
Auxiliary Spool Removal And Installation...1028
Auxiliary Electric Solenoid Disassembly...1029
Port-Auxiliary Section Disassembly...1030
Cleaning And Inspection...1030
LIFT ARM BY-PASS CONTROL VALVE...1032
Inspecting...1032
Additional Inspection For Loaders With Advanced Hand Controls...1032
Removal And Installation...1032
Disassembly And Assembly...1033
HYDRAULIC PUMP (ALUMINUM)...1034
Checking The Output Of The Hydraulic Pump...1034
Removal And Installation...1035
Parts Identification...1037
Disassembly And Assembly...1038
Inspection...1040
HYDRAULIC FILTER HOUSING...1042
Removal And Installation...1042
HYDRAULIC FLUID RESERVOIR...1044
Removal And Installation...1044
CONTROL PEDALS...1046
Removal And Installation...1046
Pedal Adjustment...1046
BUCKET POSITION VALVE...1048
Solenoid Removal And Installation...1048
Solenoid Testing...1048
Removal And Installation...1049
Disassembly And Assembly...1050
FRONT AUXILIARY PRESSURE RELIEF BLOCK...1052
Removal And Installation...1052
Disassembly And Assembly...1053
Solenoid Testing...1054
Solenoid Inspection...1054
HYDROSTATIC SYSTEM...1056
HYDROSTATIC SYSTEM INFORMATION...1058
Troubleshooting Chart...1058
Replenishing Valve Function...1059
CONTROL PANEL...1060
Removal and Installation...1060
STEERING...1062
Shock Removal And Installation...1062
Steering Shaft Removal And Installation...1062
Shaft Disassembly And Assembly...1063
Lever Removal And Installation...1064
Rubber Boot Replacement...1064
Linkage Removal And Installation...1065
Linkage Adjustment...1067
Neutral Adjustment...1070
STEERING (ADVANCE HAND CONTROL) (AHC)...1074
Components Identification...1074
Handle Control Unit Removal And Installation...1075
Steering Handle Removal and Installation...1078
Steering Handle Disassembly and Assembly...1078
Lever Removal and Installation...1079
Steering Lever Boot...1079
STEERING (ADVANCED HAND CONTROL) (AHC) W/ PUSH BUTTON FLOAT...1080
Components Identification...1080
Handle Sensor Removal And Installation...1080
Control Handle Removal And Installation...1082
Control Handle Disassembly And Assembly...1083
Control Lever Removal And Installation...1084
Control Lever Boot...1085
HYDROSTATIC MOTOR...1086
Removal And Installation...1086
Parts Identification...1088
Disassembly...1089
Assembly...1094
Carrier Shaft Seal Replacement...1100
Carrier Removal And Installation...1102
HYDROSTATIC MOTOR...1104
Carrier Parts Identification...1104
Carrier Disassembly...1105
Carrier Assembly...1106
CHARGE PRESSURE...1110
Sender Removal And Installation...1110
Checking Charge Pressure...1110
Adjusting...1111
HYDROSTATIC PUMP...1112
Replenishing/High Pressure Relief Valve...1112
Removal And Installation...1113
Parts Identification (Right Half)...1115
Parts Identification (Left Half)...1117
Hydraulic Pump Removal And Installation...1119
Pump Separation...1120
Disassembly...1121
Assembly...1127
DRIVE BELT...1134
Shield Removal And Installation...1134
Adjusting...1135
Drive Belt Replacement...1136
Tensioner Pulley Removal And Installation...1137
Tensioner Pulley Parts Identification...1138
Tensioner Pulley Disassembly...1139
Tensioner Pulley Assembly...1140
OIL COOLER...1142
Removal and Installation...1142
DRIVE SYSTEM...1144
BRAKE...1146
Pedal Removal And Installation...1146
Pedal Disassembly And Assembly...1146
Disc Removal And Installation...1147
DRIVE COMPONENTS...1150
Axle Seal Removal And Installation...1150
Axle Sprocket And Bearings Removal And Installation...1152
Chain Removal And Installation...1157
CHAINCASE...1160
Checking And Adding Oil...1160
Removing The Oil...1160
Front Cover Removal And Installation...1161
Center Cover Removal And Installation...1162
Rear Cover Removal And Installation...1163
MAIN FRAME...1164
SEAT BAR...1166
Removal And Installation...1166
Assembling Components...1168
Compression Spring Disassembly And Assembly...1170
OPERATOR CAB...1172
Gas Cylinder Removal And Installation...1172
Gas Cylinder Disassembly...1174
Removal And Installation...1175
OPERATOR SEAT...1178
Removal And Installation...1178
Slide Rail Removal And Installation...1179
Cushion Removal And Installation...1180
Back Removal And Installation...1181
Shock Removal And Installation...1182
BOB-TACH...1184
Removal And Installation...1184
Bob-Tach Lever And Wedge...1186
Bob-Tach Stops...1187
LIFT ARM...1188
Removal And Installation...1188
REAR GRILL...1194
Gas Cylinder Removal And Installation...1194
Removal And Installation...1195
REAR DOOR...1196
Removal And Installation...1196
Door Latch And Catch Adjustment...1197
Door Latch Removal And Installation...1198
FUEL TANK...1200
Removal And Installation...1200
Fuel Level Sender...1201
ELECTRICAL SYSTEM & ANALYSIS...1202
ELECTRICAL SCHEMATICS...1207
ELECTRICAL SYSTEM INFORMATION...1206
WIRING SCHEMATICS...1206
Troubleshooting Chart...1212
Description...1213
Fuse Location...1214
Relay Switch Location...1214
Solenoid Test...1215
BATTERY...1217
Removal And Installation...1217
Servicing...1218
Using A Booster Battery (Jump Starting)...1219
ALTERNATOR...1221
Adjusting The Alternator Belt...1221
Alternator Output Test...1221
Rectifier (Diode) Test...1222
Alternator Regulator Test...1222
Removal And Installation...1224
Disassembly...1225
Stator Continuity Test...1225
Stator Ground Test...1225
Rotor Continuity Test...1226
Rotor Ground Test...1226
Rectifier Continuity (Diode) Test...1226
Assembly...1227
STARTER...1229
Checking...1229
Removal And Installation...1229
Parts Identification...1230
Disassembly...1231
Inspection And Repair...1236
No Load Test...1239
Assembly...1239
INSTRUMENT PANEL...1249
Left Panel...1249
Right Panel - (Standard) (With Key Switch)...1250
Right Panel - (Deluxe) (With Keyless Start)...1251
Right Panel Setup Display Options (Deluxe)...1253
Passwords...1254
Option and Field Accessory Panels...1256
Removal And Installation...1257
LIGHTS...1259
Front Removal And Installation...1259
Rear Removal And Installation...1260
BOBCAT CONTROLLER...1261
Identification Chart...1261
Removal And Installation...1262
DIAGNOSTICS...1263
Service Codes...1263
BICS™ SYSTEM...1267
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...1267
Inspecting Deactivation Of The Auxiliary Hydraulics...1267
System (Engine STOPPED - Key ON)...1267
Inspecting The Seat Bar Sensor (Engine RUNNING)...1267
Inspecting The Traction Lock (Engine RUNNING)...1267
Inspecting The Lift Arm By-Pass Control...1268
Additional Inspection For Loaders With Advanced...1268
Hand Controls (AHC)...1268
Troubleshooting Chart...1269
Troubleshooting Guide...1270
SEAT BAR SENSOR...1271
Troubleshooting Chart...1271
Test...1272
Removal And Installation...1273
BICS™ Circuit Test...1274
TRACTION LOCK...1275
Troubleshooting Chart...1275
Inspecting...1276
Solenoid Removal And Installation...1276
Guide Removal...1278
Guide Installation...1280
ADVANCED HAND CONTROL (AHC) SYSTEM...1283
Components Identification...1283
ADVANCED HAND CONTROL (AHC) SYSTEM...1284
Troubleshooting Guide...1284
Parts Identification...1285
AHC Controller Removal And Installation...1286
Handle Control Unit Connector...1287
Switch Handle Removal and Installation...1288
Actuators Disassembly and Assembly...1291
ADVANCED HAND CONTROL (AHC) SYSTEM...1293
(W/PUSH BUTTON FLOAT)...1293
Components Identification...1293
Troubleshooting Guide...1294
Controller Connector And Wire Identification...1295
AHC Controller Removal And Installation...1296
Handle Sensor Removal And Installation...1296
Handle Sensor Connector...1298
Switch Handle Removal And Installation...1299
Actuators Disassembly And Assembly...1301
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...1303
Controls Identification Chart...1303
ENGINE SERVICE...1305
TROUBLESHOOTING...1307
Chart...1307
ENGINE SPEED CONTROL...1309
Removal And Installation...1309
Disassembly...1309
MUFFLER...1311
Removal And Installation...1311
Spark Arrestor Cleaning Procedure...1312
AIR CLEANER...1313
Replacing Filter Element(s)...1313
Removal And Installation...1315
RADIATOR...1317
Removal And Installation...1317
COOLING FAN...1319
Drive Tension Pulley Removal And Installation...1319
Gearbox/Blower Housing Removal And Installation...1320
Blower Housing Grill Removal And Installation...1322
Blower Disassembly And Assembly...1322
Gearbox Parts Identification...1324
Gearbox Disassembly...1325
Gearbox Assembly...1330
Gearbox Checking Backlash...1335
ENGINE COMPONENTS AND TESTING...1339
Compression Checking...1339
Glow Plugs Checking...1340
Glow Plugs Removal And Installation...1341
Fuel Shut-Off Solenoid, Checking...1342
Fuel Shut-Off Solenoid, Adjusting...1343
Fuel Shut-Off Solenoid Removal And Installation...1344
Checking...1345
Fuel Injection Pump Removal And Installation...1346
Timing The Injection Pump...1349
Fuel Injector Removal And Installation...1351
Fuel Injector Checking...1353
Fuel Injector Disassembly...1353
Fuel Injector Assembly...1354
Valve Clearance Adjustment...1354
Rocker Arm And Shaft Checking...1355
Valve Timing, Checking...1356
ENGINE...1357
Removal And Installation...1357
Engine Mount Replacement...1363
FLYWHEEL AND HOUSING...1365
Flywheel Removal And Installation...1365
Ring Gear Removal And Installation...1366
Housing Removal And Installation...1367
RECONDITIONING THE ENGINE...1369
Cylinder Head Removal And Installation...1369
Cylinder Head Disassembly And Assembly...1370
Cylinder Head Servicing...1371
Cylinder Head Top Clearance...1371
Checking The Valve Guide...1372
Reconditioning The Valve And Valve Seat...1373
Valve Spring...1374
Rocker Arm And Shaft Checking...1375
Timing Gearcase Cover Removal And Installation...1376
Idler Gear And Camshaft Removal And Installation...1378
Servicing The Camshaft...1379
Servicing The Idler Gear And Shaft...1380
Timing Gears Checking Backlash...1381
Fuel Camshaft Removal And Installation...1382
Fuel Camshaft Governor...1382
Crankshaft Gear Removal And Installation...1383
Oil Pump Removal And Installation...1383
Oil Pump Service...1383
Checking Engine Oil Pressure...1384
Relief Valve...1385
Piston And Connecting Rod Removal And Installation...1385
Servicing The Piston And Connecting Rod...1387
Connecting Rod Alignment...1389
Crankshaft And Bearings Removal And Installation...1390
Servicing The Crankshaft And Bearings...1391
Checking The Cylinder Bore...1395
Water Pump Disassembly And Assembly...1396
HEATER...1397
COMPONENTS...1399
Identification...1399
REGULAR MAINTENANCE...1401
Filter Elements Removal And Installation...1401
BASIC TROUBLESHOOTING...1405
Cleaning The Heater Coil...1405
Checking The Electrical System...1407
Engine Coolant By-Passing The Heater Valve...1412
Heater Valve Not Opening Or Closing...1412
SYSTEM TROUBLESHOOTING CHART...1415
Blower Motor Does Not Operate...1415
Blower motor operators normally, but air flow is insufficient...1415
HEATER UNIT...1417
Removal And Installation...1417
Disassembly And Assembly...1418
HEATER COIL...1419
Removal And Installation...1419
HEATER FAN...1421
Removal And Installation...1421
Disassembly And Assembly...1422
Wire Connector Removal and Installation...1424
HEATER VALVE...1427
Removal and Installation...1427
Disassembly And Assembly...1428
SPECIFICATIONS...1429
LOADER SPECIFICATIONS...1431
Specifications...1431
Performance...1431
Controls...1431
Engine...1432
Hydraulic System...1432
Electrical...1433
Drive System...1433
Capacities...1433
Tires...1433
Floor Pressure...1433
ENGINE SPECIFICATIONS...1435
Fuel Injection Nozzles...1435
Fuel Injection Pump...1435
Cylinder Head...1435
Valves...1435
Valve Springs...1436
Valve Timing...1436
Rocker Arms...1436
Camshaft...1436
Tappet...1436
Cylinders...1437
Piston Rings...1437
Pistons...1437
Connecting Rod...1437
Oil Pump...1437
Crankshaft...1438
Timing Gear...1438
Thermostat...1438
Crankshaft Re-Grind Data...1439
LOADER TORQUE...1441
Specifications...1441
TORQUE SPECIFICATIONS FOR BOLTS...1443
Torque for General SAE Bolts...1443
Torque For General Metric Bolts...1444
HYDRAULIC CONNECTION SPECIFICATIONS...1445
O-ring Face Seal Connection...1445
Straight Thread O-ring Fitting...1445
Tubelines And Hoses...1445
Flare Fitting...1446
O-ring Flare Fitting...1447
Port Seal Fitting...1449
HYDRAULIC FLUID SPECIFICATIONS...1451
Specifications...1451
CONVERSIONS...1453
Decimal And Millimeter Equivalents...1453
U.S. To Metric Conversion...1454
SMR...1455
Revision No: 751-1...1455
Revision No: 751-2...1457
6720326 (8-90) - 753 Service Manual...1459
MAINTENANCE SAFETY...1461
CONTENTS...1465
FOREWORD...1463
SAFETY INSTRUCTIONS...1467
SERIAL NUMBER LOCATIONS...1468
LOADER SERIAL NUMBER...1468
ENGINE SERIAL NUMBER LOCATION...1468
DELIVERY REPORT...1468
BOBCAT LOADER IDENTIFICATION...1469
PREVENTIVE MAINTENANCE...1471
SERVICE SCHEDULE...1473
LIFTING AND BLOCKING THE LOADER...1474
Procedure...1474
TRANSPORTING THE LOADER...1475
Procedure...1475
LIFTING THE LOADER...1475
Procedure...1475
LIFT ARM SUPPORT DEVICE...1476
To Disengage Lift Arm Support Device...1476
To Disengage Lift Arm Support Device...1476
OPERATOR CAB...1477
Description...1477
Raising The Operator Cab...1477
Lowering The Operator Cab...1477
Raising The Operator Cab (W/Hand Controls)...1478
Lowering The Operator Cab (W/Hand Controls)...1479
SEAT BAR SYSTEM...1480
Description...1480
Seat Bar Inspection...1480
Seat Bar Maintenance...1480
AIR CLEANER...1481
Replacement Of The Filter Element...1481
FUEL SYSTEM...1483
Fuel Specifications...1483
Filling The Fuel Tank...1483
Fuel Filter...1483
Removing Air From The Fuel System...1484
ENGINE LUBRICATION SYSTEM...1485
Checking Engine Oil...1485
Replacement Of Oil And Filter...1485
ENGINE COOLING SYSTEM...1487
Cleaning The Cooling System...1487
Coolant Level...1487
Removing Coolant From The Cooling System...1488
ALTERNATOR BELT...1489
Adjusting The Alternator Belt...1489
USING A BOOSTER BATTERY (JUMP STARTING)...1490
Procedure...1490
HYDRAULIC/HYDROSTATIC SYSTEM...1491
Checking And Adding Fluid...1491
Hydraulic/Hydrostatic Filter Replacement...1491
Hydraulic Reservoir Breather Cap...1491
SPARK ARRESTOR MUFFLER...1492
Cleaning Procedure...1492
TIRE MAINTENANCE...1493
Wheel Nuts...1493
Tire Rotation...1493
Tire Mounting...1493
FINAL DRIVE TRANSMISSION (CHAINCASE)...1494
Checking And Adding Oil...1494
FAN GEARBOX...1494
Checking Grease Level...1494
DRIVE BELT...1495
Adjustment...1495
Drive Belt Replacement...1496
LUBRICATION OF THE LOADER...1497
Procedure...1497
REMOTE START SWITCH...1499
Procedure...1499
DIAGNOSTIC TOOL...1500
Procedure...1500
SENDER AND SENSOR...1500
Service Checks...1500
Component...1500
MONITOR SERVICE CODES...1502
TROUBLESHOOTING THE BOSS® & LCD DISPLAY...1504
HYDRAULIC SYSTEM...1505
HYDRAULIC / HYDROSTATIC SCHEMATICS...1507
TROUBLESHOOTING...1519
HYDRAULIC SYSTEM INFORMATION...1520
Flare Connections...1520
O–Ring Face Seal Connection...1520
Straight Thread O–Ring Fitting...1520
Tubelines And Hoses...1520
LIFT CYLINDER(S)...1521
Checking The Lift Cylinder(s)...1521
Removal And Installation...1521
TILT CYLINDER...1523
Checking The Tilt Cylinder...1523
Removal And Installation...1523
Rod End Seal...1524
HYDRAULIC CONTROL VALVE...1525
Checking The Main Relief Valve...1525
Main Relief Valve Removal And Installation...1526
HYDRAULIC CONTROL VALVE (753H)...1527
Checking The Dual Pressure Main Relief Valve (Low Setting)...1527
Checking The Dual Pressure Main Relief Valve (High Setting)...1528
Adjusting The Dual Pressure Main Relief Valve (Low Setting)...1530
Adjusting The Dual Pressure Main Relief Valve (High Setting)...1531
SELECT VALVE (753H)...1532
Checking The Main Relief Valve In High Horsepower Select Valve...1532
HYDRAULIC CONTROL VALVE ...1533
Removal And Installation...1533
HYDRAULIC PUMP...1534
Checking The Output Of The Pump...1534
Checking The Output Of The High Flow Pump...1535
Removal And Installation...1537
HYDRAULIC FILTER HOUSING...1539
Removal And Installation...1539
HYDRAULIC FLUID RESERVOIR...1541
Removal And Installation...1541
CONTROL PEDALS...1542
Removal And Installation...1542
Adjustment...1542
PEDAL INTERLOCK LINKAGE...1543
Removal And Installation...1543
Adjustment...1543
DIVERTER VALVE (OPT.)...1544
Removal And Installation...1544
HAND CONTROLS...1545
Adjustment...1545
Removal And Installation...1546
HYDROSTATIC SYSTEM...1555
TROUBLESHOOTING...1557
HYDROSTATIC SYSTEM INFORMATION...1558
Replenishing Valve Function...1558
FRONT PANEL...1559
Removal And Installation...1559
STEERING LEVERS...1561
Disassembly And Assembly...1561
STEERING LEVER CONTROL HANDLE...1563
Disassembly And Assembly...1563
STEERING LINKAGE...1564
508611001–90879511011001 & Above 511350001 & Above 511475001–75023511525001 & Above 512711001–11125, 11131 & 11139...1564
Steering Linkage Adjustment...1564
Removal And Installation...1566
Centering Plate...1567
Pintle Arm Repair...1569
512711126 – 11130, 11132 – 11138 & 11140 & Above 508690870 & Above 511475024 & Above...1569
Steering Linkage Adjustment...1570
Steering Neutral Adjustment...1572
Removal and Installation...1573
HYDROSTATIC MOTOR...1575
Removal And Installation...1575
HYDROSTATIC PUMP...1577
Removal And Installation...1577
OIL COOLER...1580
Removal And Installation...1580
DRIVE BELT TENSIONER PULLEY...1581
Disassembly...1581
Assembly...1583
Checking Pulley End Play...1587
DRIVE SYSTEM...1589
PARKING BRAKE...1591
Adjustment...1591
Removal And Installation...1592
Brake Block And Pads...1595
Brake Discs...1597
CENTER TRANSMISSION COVER...1598
Installation...1598
FRONT CHAINCASE COVER...1599
Removal And Installation...1599
REAR CHAINCASE COVER...1599
Removal And Installation...1599
MOTOR CARRIER...1600
Shaft Seal Replacement...1600
Removal And Installation (Later Models)...1602
Disassembly And Assembly (Later Models)...1603
Disassembly And Assembly (Early Models)...1603
AXLE SEAL...1604
Removal And Installation...1604
AXLE, SPROCKET AND BEARINGS...1607
Removal And Installation...1607
Checking Axle End Play...1607
DRIVE CHAIN...1611
Removal And Installation...1611
CHAINCASE FLUID...1612
Replacing The Chaincase Fluid...1612
MAIN FRAME...1613
OPERATOR CAB GAS CYLINDER...1615
Removal And Installation...1615
Disassembly And Assembly...1616
OPERATOR CAB...1617
Removal And Installation...1617
REAR DOOR...1618
Removal And Installation...1618
SEAT BAR...1618
Removal...1618
Installation...1618
REAR GRILL...1619
Removal And Installation...1619
BOB–TACH...1620
Removal And Installation...1620
Bob–Tach Lever And Wedge...1623
Bob–Tach Stops (If Equipped)...1624
LIFT ARMS...1625
Removal And Installation...1625
FUEL TANK...1627
Removal And Installation...1627
Fuel Level Sender...1628
ELECTRICAL SYSTEM...1629
ELECTRICAL SCHEMATICS...1631
ELECTRICAL SYSTEM INFORMATION...1681
Description...1681
TROUBLESHOOTING...1681
BATTERY...1682
Removal And Installation...1682
ALTERNATOR...1683
Checking The Alternator Output (Old Style)...1683
Checking The Alternator Regulator (Old Style)...1684
Alternator Output Test (New Style)...1685
Rectifier (Diode) Test (New Style)...1685
Alternator Regulator Test (New Style)...1686
Removal And Installation (Old Style)...1687
Disassembly (Old Style)...1688
Checking The Rotor (Old Style)...1688
Checking The Stator (Old Style)...1689
Checking The Rectifier (Old Style)...1689
Disassembly And Inspection (New Style)...1691
Stator Continuity Test (New Style)...1691
Stator Ground Test (New Style)...1691
Rotor Continuity Test (New Style)...1692
Rotor Ground Test (New Style)...1692
Rectifier Continuity (Diode) Test (New Style)...1692
Assembly (New Style)...1693
STARTER...1694
Checking The Starter...1694
Removal And Installation...1694
Disassembly And Assembly...1695
Cleaning And Inspection...1697
Parts Identification...1698
OPERATING SYSTEM UNIT...1699
Removal And Installation...1699
INSTRUMENT PANEL (S/N 11079 & Above)...1700
Removal And Installation...1700
ENGINE SERVICE...1701
TROUBLESHOOTING...1703
RADIATOR...1704
Removal And Installation...1704
ENGINE MUFFLER...1706
Removal And Installation...1706
BLOWER HOUSING/FAN GEARBOX...1707
Removal And Installation...1707
Tension Pulley Removal And Installation...1710
FAN GEARBOX...1711
Disassembly...1711
Long Housing...1711
Short Housing...1713
Assembly...1716
Long Housing...1716
Short Housing...1718
Checking Backlash...1721
Parts Identification...1724
AIR CLEANER...1725
Removal And Installation...1725
ENGINE...1727
Removal And Installation...1727
S/N 11079 & Above...1731
Installation...1733
FLYWHEEL...1734
Removal And Installation...1734
Flywheel Ring Gear...1734
BELT SHIELD...1735
Removal And Installation...1735
VALVE CLEARANCE...1736
Adjustment...1736
ENGINE COMPRESSION...1736
Checking...1736
GLOW PLUGS...1737
Removal And Installation...1737
Checking...1737
FUEL INJECTION PUMP...1738
Checking The Injection Pump...1738
Adjusting Shut–Off Linkage...1738
Removal And Installation...1739
Timing The Injection Pump...1741
FUEL INJECTION NOZZLES...1742
Removal And Installation...1742
Checking The Injector Nozzle...1744
CYLINDER HEAD...1745
Removal And Installation...1745
Disassembly And Assembly...1746
Servicing The Cylinder Head...1747
Top Clearance...1747
VALVE, VALVE SEAT AND GUIDE...1748
Checking The Valve Guide...1748
Reconditioning The Valve And Valve Seat...1749
Valve Spring...1750
ROCKER ARM AND SHAFT...1751
Checking...1751
TIMING GEARCASE COVER...1752
Removal And Installation...1752
IDLER GEAR AND CAMSHAFT...1754
Removal And Installation...1754
Servicing The Camshaft...1755
Servicing The Idler Gear And Shaft...1756
TIMING GEARS...1757
Checking Backlash...1757
FUEL CAMSHAFT...1758
Removal And Installation...1758
Governor...1758
CRANKSHAFT GEAR...1759
Removal And Installation...1759
OIL PUMP...1759
Removal And Installation...1759
Oil Pump Service...1759
Checking Engine Oil Pressure...1760
Relief Valve...1760
PISTON AND CONNECTING ROD...1761
Removal And Installation...1761
Servicing The Piston And Connecting Rod...1762
Connecting Rod Alignment...1764
CRANKSHAFT AND BEARINGS...1765
Removal And Installation...1765
Servicing The Crankshaft And Bearings...1766
CYLINDER BORE...1770
Checking The Cylinder Bore...1770
WATER PUMP...1771
Disassembly And Assembly...1771
SPECIFICATIONS...1773
753 LOADER SPECIFICATIONS...1775
LOADER DIMENSIONS...1775
OPERATIONS & PERFORMANCE...1775
ENGINE...1775
HYDRAULIC SYSTEM...1776
ELECTRICAL...1776
DRIVE SYSTEM...1776
CAPACITIES...1776
TIRES...1776
753H LOADER SPECIFICATIONS...1777
LOADER DIMENSIONS...1777
OPERATIONS & PERFORMANCE...1777
ENGINE...1777
HYDRAULIC SYSTEM...1778
ELECTRICAL...1778
DRIVE SYSTEM...1778
CAPACITIES...1778
TIRES...1778
ENGINE SPECIFICATIONS...1779
Fuel Injection Nozzles...1779
Fuel Injection Pump...1779
Cylinder Head...1779
Valves...1779
Valve Springs...1779
Valve Timing...1779
Rocker Arms...1779
Camshaft...1780
Tappet...1780
Cylinders...1780
Piston Rings...1780
Piston ...1780
Connecting Rod...1780
Oil Pump...1780
Crankshaft...1781
Timing Gear...1781
Thermostat...1781
Crankshaft Re–Grind Data...1782
Torque For General Metric Bolts...1783
TORQUE SPECIFICATIONS FOR LOADER...1784
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...1785
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...1786
DECIMAL AND MILLIMETER EQUIVALENTS...1787
U.S. TO METRIC CONVERSION...1787
SERVICE MANUAL REVISIONS...1789
750-001...1789
750-002...1791
750-003...1793
750-004...1795
750-005...1797
750-006...1799
750-007...1801
750-008...1803
750-009...1805
750-010...1807
750-011...1809
750-012...1811
750-013...1813
6900976 (2-06) - 753 (G Series) Service Manual...1815
MAINTENANCE SAFETY...1817
ALPHABETICAL INDEX...1819
CONTENTS...1821
FOREWORD...1822
SAFETY INSTRUCTIONS...1825
Fire Prevention...1827
SERIAL NUMBER LOCATIONS...1829
Loader Serial Number...1829
Engine Serial Number...1829
DELIVERY REPORT...1829
LOADER IDENTIFICATION...1830
SAFETY AND MAINTENANCE...1831
LIFTING AND BLOCKING THE LOADER...1833
Procedure...1833
LIFT ARM SUPPORT DEVICE...1835
Installing Lift Arm Support Device...1835
Removing The Lift Arm Support Device...1836
OPERATOR CAB...1837
Description...1837
Raising The Operator Cab...1837
Lowering The Operator Cab...1838
Emergency Exit...1839
TRANSPORTING THE BOBCAT LOADER...1841
Procedure...1841
TOWING THE LOADER...1843
Procedure...1843
REMOTE START...1845
Procedure...1845
SERVICE SCHEDULE...1849
Chart...1849
AIR CLEANER SERVICE...1851
Checking...1851
Replacing Filter Element(s)...1852
ENGINE COOLING SYSTEM...1855
Cleaning The Cooling System...1855
Checking The Coolant Level...1855
Replacing The Coolant...1856
FUEL SYSTEM...1859
Fuel Specifications...1859
Filling the Fuel Tank...1859
Fuel Filter...1860
Removing Air From The Fuel System...1861
ENGINE LUBRICATION SYSTEM...1863
Checking Engine Oil...1863
Oil Chart...1863
Replacing Oil And Filter...1863
HYDRAULIC/HYDROSTATIC SYSTEM...1865
Checking And Adding Fluid...1865
Replacing Hydraulic/Hydrostatic Filter...1865
Replacing Hydrostatic Motor Case Drain Filter(s)...1866
Replacing Hydraulic Fluid...1867
Breather Cap...1868
FINAL DRIVE TRANSMISSION (CHAINCASE)...1869
Checking And Adding Oil...1869
Removing The Oil...1869
FAN GEARBOX...1871
Checking And Maintaining...1871
BOB-TACH...1873
Inspection And Maintenance...1873
POWER BOB-TACH...1875
Inspection And Maintenance...1875
LUBRICATION OF THE BOBCAT LOADER...1877
Procedure...1877
TIRE MAINTENANCE...1881
Wheel Nuts...1881
Rotating...1881
Mounting...1881
SPARK ARRESTOR MUFFLER...1883
Servicing...1883
HYDRAULIC SYSTEM...1885
HYDRAULIC/HYDROSTATIC SCHEMATICS...1889
HYDRAULIC SYSTEM INFORMATION...1893
Glossary Of Hydraulic/Hydrostatic Symbols...1893
Tighten Procedures...1897
Troubleshooting Chart...1898
CYLINDER (LIFT)...1899
Checking...1899
Removal And Installation...1900
Identification...1901
Disassembly...1902
Assembly...1903
CYLINDER (TILT)...1907
Checking...1907
Removal And Installation...1907
Rod End Pivot Pin Bushing And Seal Replacement...1909
Identification...1910
Disassembly...1911
Assembly...1912
CYLINDER (POWER BOB-TACH)...1915
Checking...1915
Removal And Installation...1916
Parts Identification...1917
Disassembly...1918
Assembly...1919
MAIN RELIEF VALVE...1923
Checking...1923
Adjustment...1924
Removal and Installation...1925
HYDRAULIC CONTROL VALVE (FOOT CONTROL)...1927
Removal And Installation (S/N 515840211 & Below)...1927
Removal And Installation (S/N 515840212 & Above)...1931
BICS™ Valve Removal And Installation...1936
BICS™ Valve Lift Arm By-Pass Orifice Disassembly And Assembly...1937
BICS™ Valve Check Valve Disassembly And Assembly...1938
BICS™ Valve Lock Valve Disassembly And Assembly...1939
BICS™ Valve Solenoid Disassembly And Assembly...1940
BICS™ Valve Solenoid Testing...1941
Identification Chart...1942
Lift Base End Restrictor...1943
Load Check Valves...1943
Main Relief Valve...1944
Port Relief Valve...1945
Anti-Cavitation Valve...1945
Plug...1946
Rubber Boot...1947
Lift And Tilt Lock Block Removal And Installation...1948
Lift Spool and Detent...1949
Tilt Spool Removal And Installation...1958
Auxiliary Spool Removal And Installation...1960
Auxiliary Electric Solenoid Disassembly...1960
Port-Auxiliary Section Disassembly...1961
Cleaning And Inspection...1962
HYDRAULIC CONTROL VALVE (ADVANCED CONTROL SYSTEM) (ACS)...1963
Description...1963
Removal And Installation (S/N 515840211 & Below)...1963
Removal And Installation (S/N 515840212 & Above)...1966
Actuator Removal And Installation...1970
BICS™ Valve, Removal And Installation...1971
BICS™ Valve, Lift Arm By-Pass Orifice Removal and Installation...1972
BICS™ Valve, Check Valve Removal and Installation...1973
BICS™ Valve, Lock Valve Removal and Installation...1974
BICS™ Valve, Solenoid Removal and Installation...1975
BICS™ Valve, Solenoid Testing...1976
Identification Chart (AHC)...1977
Identification Chart (ACS)...1978
Lift Base End Restrictor...1979
Load Check Valve...1979
Main Relief Valve...1980
Port Relief Valve...1981
Anti-Cavitation Valve/Port Relief Valve...1982
Anti-Cavitation Valve...1983
Lift Spool Removal And Installation...1984
Tilt Spool Removal And Installation...1985
Lift And Tilt Spool Disassembly And Assembly...1986
Auxiliary Spool Removal And Installation...1987
Auxiliary Electric Solenoid...1988
Port-Auxiliary Section...1989
Cleaning And Inspection...1989
LIFT ARM BY-PASS CONTROL VALVE...1991
Inspecting...1991
Removal And Installation...1991
Disassembly And Assembly...1992
HYDRAULIC PUMP (ALUMINUM)...1993
Checking The Output Of The Hydraulic Pump...1993
Removal And Installation...1994
Parts Identification...1996
Disassembly And Assembly...1997
Inspection...1999
HYDRAULIC PUMP (CAST IRON)...2001
Check The Output Of The Hydraulic Pump Without Power Bob-Tach...2001
Check The Output Of The Hydraulic Pump With Power Bob-Tach...2003
Removal And Installation...2005
Identification...2009
Disassembly And Assembly...2010
HYDRAULIC/HYDROSTATIC FILTER...2015
Housing Removal And Installation...2015
HYDRAULIC FLUID RESERVOIR...2017
Removal And Installation...2017
BUCKET POSITION VALVE...2019
Solenoid Removal And Installation...2019
Solenoid Testing...2019
Removal And Installation...2020
Disassembly And Assembly...2021
REAR AUXILIARY DIVERTER VALVE (SINGLE SHUTTLE)...2025
Removal And Installation...2025
Disassembly...2027
Inspection...2028
Solenoid Testing...2028
Assembly...2028
REAR AUXILIARY DIVERTER VALVE (DUAL SHUTTLE)...2029
Removal And Installation...2029
Disassembly And Assembly...2032
Solenoid Testing...2035
Inspection...2035
POWER BOB-TACH BLOCK...2037
Removal And Installation...2037
Disassembly And Assembly...2038
FRONT AUXILIARY PRESSURE RELIEF BLOCK...2047
Removal And Installation (S/N 515842309 and Below)...2047
Disassembly And Assembly (S/N 515842309 and Below)...2048
Solenoid Testing...2049
Solenoid Inspection...2049
FRONT AUXILIARY HYDRAULIC COUPLER BLOCK...2051
Removal and Installation (S/N 515842310 & Above)...2051
Disassembly And Assembly...2051
HYDROSTATIC SYSTEM...2053
HYDROSTATIC SYSTEM INFORMATION...2055
Troubleshooting Chart...2055
Replenishing Valve Function...2056
HYDROSTATIC MOTOR...2057
Removal And Installation...2057
Parts Identification...2059
Disassembly...2060
Assembly...2065
Carrier Shaft Seal Replacement...2071
Carrier Removal And Installation...2073
Carrier Parts Identification...2075
Carrier Disassembly...2076
Carrier Assembly...2077
CHARGE PRESSURE...2081
Sender Removal And Installation...2081
Checking Charge Pressure...2081
Adjusting...2082
HYDROSTATIC PUMP...2083
Replenishing/High Pressure Relief Valve...2083
Removal And Installation...2084
Parts Identification (Right Half)...2086
Parts Identification (Left Half)...2088
Hydraulic Pump Removal And Installation...2090
Pump Separation...2090
Disassembly...2091
Assembly...2097
DRIVE BELT...2105
Shield Removal And Installation...2105
Adjusting...2105
Drive Belt Replacement...2106
Tensioner Pulley Removal And Installation...2108
Tensioner Pulley Parts Identification...2109
Tensioner Pulley Disassembly...2110
Tensioner Pulley Assembly...2111
OIL COOLER...2113
Removal and Installation...2113
DRIVE SYSTEM...2115
BRAKE...2117
Pedal Removal And Installation (S/N 515834999 & Below)...2117
Pedal Disassembly And Assembly...2117
Disc Removal And Installation...2118
Switch Operated Parking Brake (S/N 515835000 & Above)...2119
DRIVE COMPONENTS...2121
Axle Seal Removal And Installation...2121
Axle Sprocket And Bearings Removal And Installation...2123
Chain Removal And Installation...2128
CHAINCASE...2131
Checking And Adding Oil...2131
Removing The Oil...2131
Front Cover Removal And Installation...2132
Center Cover Removal And Installation...2133
Rear Cover Removal And Installation...2134
MAIN FRAME...2135
SEAT BAR...2139
Removal And Installation...2139
Assembling Components...2141
Compression Spring Disassembly And Assembly...2143
OPERATOR CAB...2145
Gas Cylinder Removal And Installation...2145
Gas Cylinder Disassembly...2147
Removal And Installation...2147
OPERATOR SEAT...2151
Removal And Installation...2151
Seat Belt Removal And Installation...2151
OPERATOR SEAT (SUSPENSION)...2153
Removal And Installation...2153
Slide Rail Removal And Installation...2154
Cushion Removal And Installation...2154
Back Removal And Installation...2155
Shock Removal And Installation...2156
BOB-TACH...2157
Removal And Installation...2157
Bob-Tach Lever And Wedge...2159
Bob-Tach Stops...2160
POWER BOB-TACH...2161
Removal And Installation...2161
Power Bob-Tach Lever And Wedge...2162
LIFT ARM...2165
Removal And Installation...2165
REAR GRILL...2171
Gas Cylinder Removal And Installation...2171
Removal And Installation...2172
REAR DOOR...2173
Removal And Installation...2173
Striker Removal and Installation...2174
Striker Disassembly and Assembly...2174
Door Latch and Catch Adjustment...2175
Latch Removal and Installation (S/N 515840618 & Below)...2176
Latch Removal and Installation (S/N 515840619 & Above)...2176
FUEL TANK...2177
Removal And Installation...2177
Fuel Level Sender...2178
CONTROL PEDALS...2179
Removal And Installation...2179
Pedal Adjustment...2179
Crossbar Linkage Removal And Installation...2180
Lift Foot Pedal Linkage Removal And Installation...2181
Tilt Foot Pedal Linkage Removal And Installation...2181
CONTROL PEDALS (ACS)...2183
Foot Sensor Removal And Installation...2183
Foot Pedal Removal And Installation...2184
Foot Pedal Linkage Disassembly And Assembly...2184
CONTROL PANEL...2185
Removal and Installation...2185
CONTROL HANDLE...2189
Shock Removal And Installation...2189
Shaft Removal And Installation...2189
Shaft Disassembly And Assembly...2189
Lever Removal And Installation...2190
Rubber Boot Replacement...2190
Linkage Removal And Installation...2191
Linkage Adjustment...2193
Linkage Neutral Adjustment...2196
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)...2199
Components Identification...2199
Handle Control Unit Removal And Installation...2200
Control Handle Removal And Installation...2203
Control Handle Disassembly And Assembly...2203
Control Lever Removal And Installation...2204
Control Lever Boot...2205
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) W/PUSH BUTTON FLOAT...2207
Components Identification...2207
Handle Sensor Removal And Installation...2207
Control Handle Removal And Installation...2209
Control Handle Disassembly And Assembly...2210
Control Lever Removal And Installation...2211
Control Lever Boot...2212
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) ADVANCED HAND CONTROL...2213
Components Identification...2213
Handle Sensor Removal And Installation...2213
Control Handle Removal and Installation...2217
Control Handle Disassembly and Assembly...2218
Control Lever Removal and Installation...2218
Control Lever Boot...2219
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) SELECTABLE HAND/FOOT CONTROL...2221
Components Identification...2221
Handle Sensor Removal And Installation...2221
Control Handle Removal and Installation...2225
Control Handle Disassembly and Assembly...2226
Control Lever Removal and Installation...2226
Control Lever Boot...2227
ELECTRICAL SYSTEM & ANALYSIS...2229
ELECTRICAL SCHEMATICS...2233
ELECTRICAL SYSTEM INFORMATION...2244
Troubleshooting Chart...2246
Description...2247
Fuse Location...2248
Relay Switch Location...2249
Solenoid Test...2249
BATTERY...2250
Removal And Installation...2250
Servicing...2251
Using A Booster Battery (Jump Starting)...2252
ALTERNATOR (55 AMP)...2254
Adjusting The Alternator Belt...2254
Alternator Output Test...2254
Rectifier (Diode) Test...2255
Alternator Regulator Test...2255
Removal And Installation...2257
Disassembly...2258
Stator Continuity Test...2258
Stator Ground Test...2258
Rotor Continuity Test...2259
Rotor Ground Test...2259
Rectifier Continuity (Diode) Test...2259
Assembly...2260
ALTERNATOR (90 AMP)...2262
Adjusting The Alternator Belt...2262
Alternator Identification...2262
Charging System Check...2263
Alternator Voltage Test...2264
Low Voltage Test...2264
High Voltage Test...2265
Removal And Installation...2266
Rectifier Continuity (Diode) Test...2267
Alternator Regulator Test...2268
Disassembly...2268
Stator Continuity Test...2269
Stator Ground Test...2269
Rotor Continuity Test...2269
Rotor Ground Test...2269
Assembly...2270
STARTER (NIPPONDENSO)...2272
Checking...2272
Removal And Installation...2272
Parts Identification...2274
Disassembly...2275
Inspection And Repair...2280
No Load Test...2283
Assembly...2283
STARTER (VALEO)...2290
Checking...2290
Removal And Installation...2291
Parts Identification...2292
Disassembly and Assembly...2293
Inspection And Repair...2296
No Load Test...2298
INSTRUMENT PANEL...2300
Left Panel...2300
Right Panel - (Standard) (With Key Switch)...2301
Right Panel - (Deluxe) (With Keyless Start)...2302
Right Panel Setup Display Options (Deluxe)...2304
Passwords...2305
Option and Field Accessory Panels...2307
Removal And Installation...2308
Front Accessory Panel Removal And Installation...2309
LIGHTS...2310
Front Removal And Installation...2310
Rear Removal And Installation...2311
BOBCAT CONTROLLER...2312
Identification Chart (S/N 515843086 & Below)...2312
Identification Chart (S/N 515843087 & Above)...2313
Removal And Installation...2315
DIAGNOSTICS...2316
Service Codes...2316
BICS™ SYSTEM...2320
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...2320
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED - Key ON)...2320
Inspecting The Seat Bar Sensor (Engine RUNNING)...2320
Inspecting The Traction Lock (Engine RUNNING)...2320
Inspecting The Lift Arm By-Pass Control...2321
Additional Inspection For Loaders With Advanced Hand Controls (AHC)...2321
Troubleshooting Chart...2322
Troubleshooting Guide...2323
SEAT BAR SENSOR...2324
Troubleshooting Chart...2324
Test...2325
Removal And Installation...2326
BICS™ Circuit Test...2327
TRACTION LOCK...2328
Troubleshooting Chart...2328
Inspecting...2329
Solenoid Removal And Installation...2329
Guide Removal...2331
Guide Installation...2333
ADVANCED HAND CONTROL (AHC) SYSTEM...2336
Components Identification...2336
Troubleshooting Guide...2337
Parts Identification...2338
AHC Controller Removal And Installation...2339
Control Handle Unit Connector...2339
Switch Handle Removal and Installation...2340
Actuators Disassembly And Assembly...2343
ADVANCED HAND CONTROL (AHC) SYSTEM (W/ PUSH BUTTON FLOAT)...2346
Components Identification...2346
Troubleshooting Guide...2347
Controller Connector And Wire Identification...2348
AHC Controller Removal And Installation...2349
Handle Sensor Removal And Installation...2349
Handle Sensor Connector...2351
Switch Handle Removal And Installation...2352
Actuators Disassembly And Assembly...2354
ADVANCED CONTROL SYSTEM (ACS) ADVANCED HAND CONTROL...2356
Components Identification...2356
Troubleshooting Guide...2357
Controller, Connector And Wire Identification...2358
ACS Controller Removal And Installation...2359
Handle Sensor Connector...2359
Switch Handle Removal...2360
Switch Handle Installation...2362
Actuators Disassembly And Assembly...2365
ADVANCED CONTROL SYSTEM (ACS) SELECTABLE HAND/FOOT CONTROL...2366
Components Identification...2366
Troubleshooting Guide...2368
Controller, Connector And Wire Identification...2369
ACS Controller Removal And Installation...2370
Handle Sensor Connector...2370
Switch Handle Removal...2371
Switch Handle Installation...2373
Actuators Disassembly And Assembly...2376
Handle Lock Solenoid Removal And Installation...2377
Handle Lock Solenoid Disassembly And Assembly...2377
Handle Lock Solenoid Connector...2378
Calibration Of The ACS System...2379
Switchable Hand/Foot Controls Calibration Procedure...2379
Hand Controls Only Calibration Procedure...2380
Foot Sensor Disassembly And Assembly...2382
Foot Sensor Connector...2382
Foot Lock Solenoid Removal And Installation...2383
Foot Lock Solenoid Connector...2383
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...2386
Controls Identification Chart...2386
ENGINE SERVICE...2388
TROUBLESHOOTING...2390
Chart...2390
ENGINE SPEED CONTROL...2392
Removal And Installation...2392
Disassembly...2392
MUFFLER...2394
Removal And Installation...2394
AIR CLEANER...2396
Removal And Installation...2396
RADIATOR...2398
Removal And Installation...2398
COOLING FAN...2400
Drive Tension Pulley Removal And Installation...2400
Gearbox/Blower Housing Removal And Installation...2401
Blower Housing Grill Removal And Installation...2403
Blower Disassembly And Assembly...2403
Gearbox Parts Identification...2405
Gearbox Disassembly...2406
Gearbox Assembly...2411
Gearbox Checking Backlash...2415
ENGINE COMPONENTS AND TESTING...2420
Compression Checking...2420
Glow Plugs Checking...2421
Glow Plugs Removal And Installation...2421
Fuel Shut-Off Solenoid Checking...2422
Fuel Shut-Off Solenoid Adjusting...2422
Fuel Shut-Off Solenoid Removal And Installation...2423
Checking...2424
Fuel Injection Pump Removal And Installation...2425
Timing The Injection Pump...2428
Fuel Injector Removal And Installation...2429
Fuel Injector Checking...2431
Fuel Injector Disassembly...2431
Fuel Injector Assembly...2432
Valve Clearance Adjustment...2432
Rocker Arm And Shaft Checking...2433
Valve Timing Checking...2433
ENGINE...2434
Removal And Installation...2434
Engine Mount Replacement...2439
FLYWHEEL AND HOUSING...2440
Flywheel Removal And Installation...2440
Ring Gear Removal And Installation...2441
Housing Removal And Installation...2441
RPM SENSOR...2444
Adjustment...2444
RECONDITIONING THE ENGINE...2446
Cylinder Head Removal And Installation...2446
Cylinder Head Disassembly And Assembly...2447
Cylinder Head Servicing...2448
Cylinder Head Top Clearance...2448
Checking The Valve Guide...2449
Reconditioning The Valve And Valve Seat...2450
Valve Spring...2451
Rocker Arm And Shaft Checking...2451
Timing Gearcase Cover Removal And Installation...2452
Idler Gear And Camshaft Removal And Installation...2454
Servicing The Camshaft...2455
Servicing The Idler Gear And Shaft...2456
Timing Gears Checking Backlash...2457
Fuel Camshaft Removal And Installation...2457
Fuel Camshaft Governor...2458
Crankshaft Gear Removal And Installation...2458
Oil Pump Removal And Installation...2459
Oil Pump Service...2459
Checking Engine Oil Pressure...2460
Relief Valve...2460
Piston And Connecting Rod Removal And Installation...2461
Servicing The Piston And Connecting Rod...2462
Connecting Rod Alignment...2464
Crankshaft And Bearings Removal And Installation...2465
Servicing The Crankshaft And Bearings...2466
Checking The Cylinder Bore...2469
Water Pump Disassembly And Assembly...2470
HEATER...2472
COMPONENTS...2474
Identification...2474
REGULAR MAINTENANCE...2476
Filter Elements Removal And Installation...2476
BASIC TROUBLESHOOTING...2480
Cleaning The Heater Coil...2480
Checking The Electrical System...2482
Engine Coolant By-Passing The Heater Valve...2487
Heater Valve Not Opening Or Closing...2487
SYSTEM TROUBLESHOOTING CHART...2490
Blower Motor Does Not Operate...2490
Blower motor operators normally, but air flow is insufficient...2490
HEATER UNIT...2492
Removal And Installation...2492
Disassembly And Assembly...2493
HEATER COIL...2494
Removal And Installation...2494
HEATER FAN...2496
Removal And Installation...2496
Disassembly And Assembly...2497
Wire Connector Removal and Installation...2499
HEATER VALVE...2502
Removal and Installation...2502
Disassembly And Assembly...2503
SPECIFICATIONS...2504
LOADER SPECIFICATIONS (753)...2506
Machine Dimensions...2506
Performance...2507
Controls...2507
Engine...2507
Hydraulic System...2508
Electrical...2509
Drive System...2509
Capacities...2510
Tires...2510
ENGINE SPECIFICATIONS...2512
Fuel Injection Nozzles...2512
Fuel Injection Pump...2512
Cylinder Head...2512
Valves...2512
Valve Springs...2513
Valve Timing...2513
Rocker Arms...2513
Camshaft...2513
Tappet...2513
Cylinders...2514
Piston Rings...2514
Pistons...2514
Connecting Rod...2514
Oil Pump...2514
Crankshaft...2515
Timing Gear...2515
Thermostat...2515
Crankshaft Re-Grind Data...2516
TORQUE SPECIFICATIONS FOR BOLTS...2518
Torque For General SAE Bolts...2518
Torque For General Metric Bolts...2519
Torque For Kubota Metric Bolts...2519
HYDRAULIC CONNECTION SPECIFICATIONS...2520
O-ring Face Seal Connection...2520
Straight Thread O-ring Fitting...2521
Tubelines And Hoses...2521
Flare Fitting...2521
O-ring Flare Fitting...2522
Port Seal Fitting...2524
HYDRAULIC FLUID SPECIFICATIONS...2526
Specifications...2526
CONVERSIONS...2528
Decimal And Millimeter Equivalents...2528
U.S. To Metric Conversion...2528
SMR...2530
Revision No: 753-1...2530
Revision No: 753-2...2532
Revision No: 753-3...2534
6900976 (9-10) - 753 (G Series) Service Manual...2536
MAINTENANCE SAFETY...2538
ALPHABETICAL INDEX...2540
CONTENTS...2542
FOREWORD...2543
SAFETY INSTRUCTIONS...2546
Fire Prevention...2548
SERIAL NUMBER LOCATIONS...2550
Loader Serial Number...2550
Engine Serial Number...2550
DELIVERY REPORT...2550
LOADER IDENTIFICATION...2551
SAFETY AND MAINTENANCE...2552
LIFTING AND BLOCKING THE LOADER...2554
Procedure...2554
LIFT ARM SUPPORT DEVICE...2556
Installing Lift Arm Support Device...2556
Removing The Lift Arm Support Device...2557
OPERATOR CAB...2558
Description...2558
Raising The Operator Cab...2558
Lowering The Operator Cab...2559
Emergency Exit...2560
TRANSPORTING THE BOBCAT LOADER...2562
Procedure...2562
TOWING THE LOADER...2564
Procedure...2564
REMOTE START...2566
Procedure...2566
SERVICE SCHEDULE...2570
Chart...2570
AIR CLEANER SERVICE...2572
Checking...2572
Replacing Filter Element(s)...2573
ENGINE COOLING SYSTEM...2576
Cleaning The Cooling System...2576
Checking The Coolant Level...2576
Replacing The Coolant...2577
FUEL SYSTEM...2580
Fuel Specifications...2580
Filling the Fuel Tank...2580
Fuel Filter...2581
Removing Air From The Fuel System...2582
ENGINE LUBRICATION SYSTEM...2584
Checking Engine Oil...2584
Oil Chart...2584
Replacing Oil And Filter...2584
HYDRAULIC/HYDROSTATIC SYSTEM...2586
Checking And Adding Fluid...2586
Replacing Hydraulic/Hydrostatic Filter...2586
Replacing Hydrostatic Motor Case Drain Filter(s)...2587
Replacing Hydraulic Fluid...2588
Breather Cap...2589
FINAL DRIVE TRANSMISSION (CHAINCASE)...2590
Checking And Adding Oil...2590
Removing The Oil...2590
FAN GEARBOX...2592
Checking And Maintaining...2592
BOB-TACH...2594
Inspection And Maintenance...2594
POWER BOB-TACH...2596
Inspection And Maintenance...2596
LUBRICATION OF THE BOBCAT LOADER...2598
Procedure...2598
TIRE MAINTENANCE...2602
Wheel Nuts...2602
Rotating...2602
Mounting...2602
SPARK ARRESTOR MUFFLER...2604
Servicing...2604
HYDRAULIC SYSTEM...2606
HYDRAULIC/HYDROSTATIC SCHEMATICS...2610
HYDRAULIC SYSTEM INFORMATION...2614
Glossary Of Hydraulic/Hydrostatic Symbols...2614
Tighten Procedures...2618
Troubleshooting Chart...2619
CYLINDER (LIFT)...2620
Checking...2620
Removal And Installation...2621
Identification...2622
Disassembly...2623
Assembly...2624
CYLINDER (TILT)...2628
Checking...2628
Removal And Installation...2628
Rod End Pivot Pin Bushing And Seal Replacement...2630
Identification...2631
Disassembly...2632
Assembly...2633
CYLINDER (POWER BOB-TACH)...2636
Checking...2636
Removal And Installation...2637
Parts Identification...2638
Disassembly...2639
Assembly...2640
MAIN RELIEF VALVE...2644
Checking...2644
Adjustment...2645
Removal and Installation...2646
HYDRAULIC CONTROL VALVE (FOOT CONTROL)...2648
Removal And Installation (S/N 515840211 & Below)...2648
Removal And Installation (S/N 515840212 & Above)...2652
BICS™ Valve Removal And Installation...2657
BICS™ Valve Lift Arm By-Pass Orifice Disassembly And Assembly...2658
BICS™ Valve Check Valve Disassembly And Assembly...2659
BICS™ Valve Lock Valve Disassembly And Assembly...2660
BICS™ Valve Solenoid Disassembly And Assembly...2661
BICS™ Valve Solenoid Testing...2662
Identification Chart...2663
Lift Base End Restrictor...2664
Load Check Valves...2664
Main Relief Valve...2665
Port Relief Valve...2666
Anti-Cavitation Valve...2666
Plug...2667
Rubber Boot...2668
Lift And Tilt Lock Block Removal And Installation...2669
Lift Spool and Detent...2670
Tilt Spool Removal And Installation...2679
Auxiliary Spool Removal And Installation...2681
Auxiliary Electric Solenoid Disassembly...2681
Port-Auxiliary Section Disassembly...2682
Cleaning And Inspection...2683
HYDRAULIC CONTROL VALVE (ADVANCED CONTROL SYSTEM) (ACS)...2684
Description...2684
Removal And Installation (S/N 515840211 & Below)...2684
Removal And Installation (S/N 515840212 & Above)...2687
Actuator Removal And Installation...2691
BICS™ Valve, Removal And Installation...2692
BICS™ Valve, Lift Arm By-Pass Orifice Removal and Installation...2693
BICS™ Valve, Check Valve Removal and Installation...2694
BICS™ Valve, Lock Valve Removal and Installation...2695
BICS™ Valve, Solenoid Removal and Installation...2696
BICS™ Valve, Solenoid Testing...2697
Identification Chart (AHC)...2698
Identification Chart (ACS)...2699
Lift Base End Restrictor...2700
Load Check Valve...2700
Main Relief Valve...2701
Port Relief Valve...2702
Anti-Cavitation Valve/Port Relief Valve...2703
Anti-Cavitation Valve...2704
Lift Spool Removal And Installation...2705
Tilt Spool Removal And Installation...2706
Lift And Tilt Spool Disassembly And Assembly...2707
Auxiliary Spool Removal And Installation...2708
Auxiliary Electric Solenoid...2709
Port-Auxiliary Section...2710
Cleaning And Inspection...2710
LIFT ARM BY-PASS CONTROL VALVE...2712
Inspecting...2712
Removal And Installation...2712
Disassembly And Assembly...2713
HYDRAULIC PUMP (ALUMINUM)...2714
Checking The Output Of The Hydraulic Pump...2714
Removal And Installation...2715
Parts Identification...2717
Disassembly And Assembly...2718
Inspection...2720
HYDRAULIC PUMP (CAST IRON)...2722
Check The Output Of The Hydraulic Pump Without Power Bob-Tach...2722
Check The Output Of The Hydraulic Pump With Power Bob-Tach...2724
Removal And Installation...2726
Identification...2730
Disassembly And Assembly...2731
HYDRAULIC/HYDROSTATIC FILTER...2736
Housing Removal And Installation...2736
HYDRAULIC FLUID RESERVOIR...2738
Removal And Installation...2738
BUCKET POSITION VALVE...2740
Solenoid Removal And Installation...2740
Solenoid Testing...2740
Removal And Installation...2741
Disassembly And Assembly...2742
REAR AUXILIARY DIVERTER VALVE (SINGLE SHUTTLE)...2746
Removal And Installation...2746
Disassembly...2748
Inspection...2749
Solenoid Testing...2749
Assembly...2749
REAR AUXILIARY DIVERTER VALVE (DUAL SHUTTLE)...2750
Removal And Installation...2750
Disassembly And Assembly...2753
Solenoid Testing...2756
Inspection...2756
POWER BOB-TACH BLOCK...2758
Removal And Installation...2758
Disassembly And Assembly...2759
FRONT AUXILIARY PRESSURE RELIEF BLOCK...2768
Removal And Installation (S/N 515842309 and Below)...2768
Disassembly And Assembly (S/N 515842309 and Below)...2769
Solenoid Testing...2770
Solenoid Inspection...2770
FRONT AUXILIARY HYDRAULIC COUPLER BLOCK...2772
Removal and Installation (S/N 515842310 & Above)...2772
Disassembly And Assembly...2772
HYDROSTATIC SYSTEM...2774
HYDROSTATIC SYSTEM INFORMATION...2776
Troubleshooting Chart...2776
Replenishing Valve Function...2777
HYDROSTATIC MOTOR...2778
Removal And Installation...2778
Parts Identification...2780
Disassembly...2781
Assembly...2786
Carrier Shaft Seal Replacement...2792
Carrier Removal And Installation...2794
Carrier Parts Identification...2796
Carrier Disassembly...2797
Carrier Assembly...2798
CHARGE PRESSURE...2802
Sender Removal And Installation...2802
Checking Charge Pressure...2802
Adjusting...2803
HYDROSTATIC PUMP...2804
Replenishing/High Pressure Relief Valve...2804
Removal And Installation...2805
Parts Identification (Right Half)...2807
Parts Identification (Left Half)...2809
Hydraulic Pump Removal And Installation...2811
Pump Separation...2811
Disassembly...2812
Assembly...2818
DRIVE BELT...2826
Shield Removal And Installation...2826
Adjusting...2826
Drive Belt Replacement...2827
Tensioner Pulley Removal And Installation...2829
Tensioner Pulley Parts Identification...2830
Tensioner Pulley Disassembly...2831
Tensioner Pulley Assembly...2832
OIL COOLER...2834
Removal and Installation...2834
DRIVE SYSTEM...2836
BRAKE...2838
Pedal Removal And Installation (S/N 515834999 & Below)...2838
Pedal Disassembly And Assembly...2838
Disc Removal And Installation...2839
Switch Operated Parking Brake (S/N 515835000 & Above)...2840
DRIVE COMPONENTS...2842
Axle Seal Removal And Installation...2842
Axle Sprocket And Bearings Removal And Installation...2844
Chain Removal And Installation...2849
CHAINCASE...2852
Checking And Adding Oil...2852
Removing The Oil...2852
Front Cover Removal And Installation...2853
Center Cover Removal And Installation...2854
Rear Cover Removal And Installation...2855
MAIN FRAME...2856
SEAT BAR...2860
Removal And Installation...2860
Assembling Components...2862
Compression Spring Disassembly And Assembly...2864
OPERATOR CAB...2866
Gas Cylinder Removal And Installation...2866
Gas Cylinder Disassembly...2868
Removal And Installation...2868
OPERATOR SEAT...2872
Removal And Installation...2872
Seat Belt Removal And Installation...2872
OPERATOR SEAT (SUSPENSION)...2874
Removal And Installation...2874
Slide Rail Removal And Installation...2875
Cushion Removal And Installation...2875
Back Removal And Installation...2876
Shock Removal And Installation...2877
BOB-TACH...2878
Removal And Installation...2878
Bob-Tach Lever And Wedge...2880
Bob-Tach Stops...2881
POWER BOB-TACH...2882
Removal And Installation...2882
Power Bob-Tach Lever And Wedge...2883
LIFT ARM...2886
Removal And Installation...2886
REAR GRILL...2892
Gas Cylinder Removal And Installation...2892
Removal And Installation...2893
REAR DOOR...2894
Removal And Installation...2894
Striker Removal and Installation...2895
Striker Disassembly and Assembly...2895
Door Latch and Catch Adjustment...2896
Latch Removal and Installation (S/N 515840618 & Below)...2897
Latch Removal and Installation (S/N 515840619 & Above)...2897
FUEL TANK...2898
Removal And Installation...2898
Fuel Level Sender...2899
CONTROL PEDALS...2900
Removal And Installation...2900
Pedal Adjustment...2900
Crossbar Linkage Removal And Installation...2901
Lift Foot Pedal Linkage Removal And Installation...2902
Tilt Foot Pedal Linkage Removal And Installation...2902
CONTROL PEDALS (ACS)...2904
Foot Sensor Removal And Installation...2904
Foot Pedal Removal And Installation...2905
Foot Pedal Linkage Disassembly And Assembly...2905
CONTROL PANEL...2906
Removal and Installation...2906
CONTROL HANDLE...2910
Shock Removal And Installation...2910
Shaft Removal And Installation...2910
Shaft Disassembly And Assembly...2910
Lever Removal And Installation...2911
Rubber Boot Replacement...2911
Linkage Removal And Installation...2912
Linkage Adjustment...2914
Linkage Neutral Adjustment...2917
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)...2920
Components Identification...2920
Handle Control Unit Removal And Installation...2921
Control Handle Removal And Installation...2924
Control Handle Disassembly And Assembly...2924
Control Lever Removal And Installation...2925
Control Lever Boot...2926
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) W/PUSH BUTTON FLOAT...2928
Components Identification...2928
Handle Sensor Removal And Installation...2928
Control Handle Removal And Installation...2930
Control Handle Disassembly And Assembly...2931
Control Lever Removal And Installation...2932
Control Lever Boot...2933
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) ADVANCED HAND CONTROL...2934
Components Identification...2934
Handle Sensor Removal And Installation...2934
Control Handle Removal and Installation...2938
Control Handle Disassembly and Assembly...2939
Control Lever Removal and Installation...2939
Control Lever Boot...2940
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) SELECTABLE HAND/FOOT CONTROL...2942
Components Identification...2942
Handle Sensor Removal And Installation...2942
Control Handle Removal and Installation...2946
Control Handle Disassembly and Assembly...2947
Control Lever Removal and Installation...2947
Control Lever Boot...2948
ELECTRICAL SYSTEM & ANALYSIS...2950
ELECTRICAL SCHEMATICS...2954
ELECTRICAL SYSTEM INFORMATION...2965
Troubleshooting Chart...2967
Description...2968
Fuse Location...2969
Relay Switch Location...2970
Solenoid Test...2970
BATTERY...2971
Removal And Installation...2971
Servicing...2972
Using A Booster Battery (Jump Starting)...2973
ALTERNATOR (55 AMP)...2975
Adjusting The Alternator Belt...2975
Alternator Output Test...2975
Rectifier (Diode) Test...2976
Alternator Regulator Test...2976
Removal And Installation...2978
Disassembly...2979
Stator Continuity Test...2979
Stator Ground Test...2979
Rotor Continuity Test...2980
Rotor Ground Test...2980
Rectifier Continuity (Diode) Test...2980
Assembly...2981
ALTERNATOR (90 AMP)...2983
Adjusting The Alternator Belt...2983
Alternator Identification...2983
Charging System Check...2984
Alternator Voltage Test...2985
Low Voltage Test...2985
High Voltage Test...2986
Removal And Installation...2987
Rectifier Continuity (Diode) Test...2988
Alternator Regulator Test...2989
Disassembly...2989
Stator Continuity Test...2990
Stator Ground Test...2990
Rotor Continuity Test...2990
Rotor Ground Test...2990
Assembly...2991
STARTER (NIPPONDENSO)...2993
Checking...2993
Removal And Installation...2993
Parts Identification...2995
Disassembly...2996
Inspection And Repair...3001
No Load Test...3004
Assembly...3004
STARTER (VALEO)...3011
Checking...3011
Removal And Installation...3012
Parts Identification...3013
Disassembly and Assembly...3014
Inspection And Repair...3017
No Load Test...3019
INSTRUMENT PANEL...3021
Left Panel...3021
Right Panel - (Standard) (With Key Switch)...3022
Right Panel - (Deluxe) (With Keyless Start)...3023
Right Panel Setup Display Options (Deluxe)...3025
Passwords...3026
Option and Field Accessory Panels...3028
Removal And Installation...3029
Front Accessory Panel Removal And Installation...3030
LIGHTS...3031
Front Removal And Installation...3031
Rear Removal And Installation...3032
BOBCAT CONTROLLER...3033
Identification Chart (S/N 515843086 & Below)...3033
Identification Chart (S/N 515843087 & Above)...3034
Removal And Installation...3036
DIAGNOSTICS...3037
Service Codes...3037
BICS™ SYSTEM...3041
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...3041
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED - Key ON)...3041
Inspecting The Seat Bar Sensor (Engine RUNNING)...3041
Inspecting The Traction Lock (Engine RUNNING)...3041
Inspecting The Lift Arm By-Pass Control...3042
Additional Inspection For Loaders With Advanced Hand Controls (AHC)...3042
Troubleshooting Chart...3043
Troubleshooting Guide...3044
SEAT BAR SENSOR...3045
Troubleshooting Chart...3045
Test...3046
Removal And Installation...3047
BICS™ Circuit Test...3048
TRACTION LOCK...3049
Troubleshooting Chart...3049
Inspecting...3050
Solenoid Removal And Installation...3050
Guide Removal...3052
Guide Installation...3054
ADVANCED HAND CONTROL (AHC) SYSTEM...3057
Components Identification...3057
Troubleshooting Guide...3058
Parts Identification...3059
AHC Controller Removal And Installation...3060
Control Handle Unit Connector...3060
Switch Handle Removal and Installation...3061
Actuators Disassembly And Assembly...3064
ADVANCED HAND CONTROL (AHC) SYSTEM (W/ PUSH BUTTON FLOAT)...3067
Components Identification...3067
Troubleshooting Guide...3068
Controller Connector And Wire Identification...3069
AHC Controller Removal And Installation...3070
Handle Sensor Removal And Installation...3070
Handle Sensor Connector...3072
Switch Handle Removal And Installation...3073
Actuators Disassembly And Assembly...3075
ADVANCED CONTROL SYSTEM (ACS) ADVANCED HAND CONTROL...3077
Components Identification...3077
Troubleshooting Guide...3078
Controller, Connector And Wire Identification...3079
ACS Controller Removal And Installation...3080
Handle Sensor Connector...3080
Switch Handle Removal...3081
Switch Handle Installation...3083
Actuators Disassembly And Assembly...3086
ADVANCED CONTROL SYSTEM (ACS) SELECTABLE HAND/FOOT CONTROL...3087
Components Identification...3087
Troubleshooting Guide...3089
Controller, Connector And Wire Identification...3090
ACS Controller Removal And Installation...3091
Handle Sensor Connector...3091
Switch Handle Removal...3092
Switch Handle Installation...3094
Actuators Disassembly And Assembly...3097
Handle Lock Solenoid Removal And Installation...3098
Handle Lock Solenoid Disassembly And Assembly...3098
Handle Lock Solenoid Connector...3099
Calibration Of The ACS System...3100
Switchable Hand/Foot Controls Calibration Procedure...3100
Hand Controls Only Calibration Procedure...3101
Foot Sensor Disassembly And Assembly...3103
Foot Sensor Connector...3103
Foot Lock Solenoid Removal And Installation...3104
Foot Lock Solenoid Connector...3104
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...3107
Controls Identification Chart...3107
ENGINE SERVICE...3109
TROUBLESHOOTING...3111
Chart...3111
ENGINE SPEED CONTROL...3113
Removal And Installation...3113
Disassembly...3113
MUFFLER...3115
Removal And Installation...3115
AIR CLEANER...3117
Removal And Installation...3117
RADIATOR...3119
Removal And Installation...3119
COOLING FAN...3121
Drive Tension Pulley Removal And Installation...3121
Gearbox/Blower Housing Removal And Installation...3122
Blower Housing Grill Removal And Installation...3124
Blower Disassembly And Assembly...3124
Gearbox Parts Identification...3126
Gearbox Disassembly...3127
Gearbox Assembly...3132
Gearbox Checking Backlash...3136
ENGINE COMPONENTS AND TESTING...3141
Compression Checking...3141
Glow Plugs Checking...3142
Glow Plugs Removal And Installation...3142
Fuel Shut-Off Solenoid Checking...3143
Fuel Shut-Off Solenoid Adjusting...3143
Fuel Shut-Off Solenoid Removal And Installation...3144
Checking...3145
Fuel Injection Pump Removal And Installation...3146
Timing The Injection Pump...3149
Fuel Injector Removal And Installation...3150
Fuel Injector Checking...3152
Fuel Injector Disassembly...3152
Fuel Injector Assembly...3153
Valve Clearance Adjustment...3153
Rocker Arm And Shaft Checking...3154
Valve Timing Checking...3154
ENGINE...3155
Removal And Installation...3155
Engine Mount Replacement...3160
FLYWHEEL AND HOUSING...3161
Flywheel Removal And Installation...3161
Ring Gear Removal And Installation...3162
Housing Removal And Installation...3162
RPM SENSOR...3165
Adjustment...3165
RECONDITIONING THE ENGINE...3167
Cylinder Head Removal And Installation...3167
Cylinder Head Disassembly And Assembly...3168
Cylinder Head Servicing...3169
Cylinder Head Top Clearance...3169
Checking The Valve Guide...3170
Reconditioning The Valve And Valve Seat...3171
Valve Spring...3172
Rocker Arm And Shaft Checking...3172
Timing Gearcase Cover Removal And Installation...3173
Idler Gear And Camshaft Removal And Installation...3175
Servicing The Camshaft...3176
Servicing The Idler Gear And Shaft...3177
Timing Gears Checking Backlash...3178
Fuel Camshaft Removal And Installation...3178
Fuel Camshaft Governor...3179
Crankshaft Gear Removal And Installation...3179
Oil Pump Removal And Installation...3180
Oil Pump Service...3180
Checking Engine Oil Pressure...3181
Relief Valve...3181
Piston And Connecting Rod Removal And Installation...3182
Servicing The Piston And Connecting Rod...3183
Connecting Rod Alignment...3185
Crankshaft And Bearings Removal And Installation...3186
Servicing The Crankshaft And Bearings...3187
Checking The Cylinder Bore...3190
Water Pump Disassembly And Assembly...3191
HEATER...3193
COMPONENTS...3195
Identification...3195
REGULAR MAINTENANCE...3197
Filter Elements Removal And Installation...3197
BASIC TROUBLESHOOTING...3201
Cleaning The Heater Coil...3201
Checking The Electrical System...3203
Engine Coolant By-Passing The Heater Valve...3208
Heater Valve Not Opening Or Closing...3208
SYSTEM TROUBLESHOOTING CHART...3211
Blower Motor Does Not Operate...3211
Blower motor operators normally, but air flow is insufficient...3211
HEATER UNIT...3213
Removal And Installation...3213
Disassembly And Assembly...3214
HEATER COIL...3215
Removal And Installation...3215
HEATER FAN...3217
Removal And Installation...3217
Disassembly And Assembly...3218
Wire Connector Removal and Installation...3220
HEATER VALVE...3223
Removal and Installation...3223
Disassembly And Assembly...3224
SPECIFICATIONS...3225
LOADER SPECIFICATIONS (753)...3227
Machine Dimensions...3227
Performance...3228
Controls...3228
Engine...3228
Hydraulic System...3229
Electrical...3230
Drive System...3230
Capacities...3231
Tires...3231
ENGINE SPECIFICATIONS...3233
Fuel Injection Nozzles...3233
Fuel Injection Pump...3233
Cylinder Head...3233
Valves...3233
Valve Springs...3234
Valve Timing...3234
Rocker Arms...3234
Camshaft...3234
Tappet...3234
Cylinders...3235
Piston Rings...3235
Pistons...3235
Connecting Rod...3235
Oil Pump...3235
Crankshaft...3236
Timing Gear...3236
Thermostat...3236
Crankshaft Re-Grind Data...3237
TORQUE SPECIFICATIONS FOR BOLTS...3239
Torque For General SAE Bolts...3239
Torque For General Metric Bolts...3240
Torque For Kubota Metric Bolts...3240
HYDRAULIC CONNECTION SPECIFICATIONS...3241
O-ring Face Seal Connection...3241
Straight Thread O-ring Fitting...3242
Tubelines And Hoses...3242
Flare Fitting...3242
O-ring Flare Fitting...3243
Port Seal Fitting...3245
HYDRAULIC FLUID SPECIFICATIONS...3247
Specifications...3247
CONVERSIONS...3249
Decimal And Millimeter Equivalents...3249
U.S. To Metric Conversion...3249
SMR...3251
Revision No: 753-1...3251
Revision No: 753-2...3253
Revision No: 753-3...3255
6900090 (6-97) - 753; 753 High Flow Service Manual...3259
MAINTENANCE SAFETY...3261
ALPHABETICAL INDEX...3263
CONTENTS...3265
FOREWORD...3267
SAFETY INSTRUCTIONS...3269
SERIAL NUMBER LOCATIONS...3271
LOADER SERIAL NUMBER...3271
ENGINE SERIAL NUMBER...3271
DELIVERY REPORT...3271
BOBCAT LOADER IDENTIFICATION...3272
PREVENTIVE MAINTENANCE...3273
SERVICE SCHEDULE...3275
LIFTING AND BLOCKING THE LOADER...3276
Procedure...3276
TRANSPORTING THE LOADER...3277
Procedure...3277
TOWING THE LOADER...3277
Procedure...3277
STOPPING THE BOBCAT LOADER...3277
LIFTING THE LOADER...3278
Four Point Lift...3278
Single Point Lift...3278
LIFT ARM SUPPORT DEVICE...3279
Engaging The Lift Arm Support Device...3279
Disengaging The Lift Arm Support Device...3280
OPERATOR CAB...3281
Description...3281
Raising The Operator Cab...3281
Lowering The Operator Cab...3282
Emergency Exit...3283
SEAT BAR RESTRAINT SYSTEM (Foot Pedals)...3284
Description...3284
Seat Bar Inspection...3284
Seat Bar Maintenance...3284
SEAT BAR RESTRAINT SYSTEM (Mechanical Hand Controls)...3285
Description...3285
Seat Bar Inspection...3285
Seat Bar Maintenance...3285
SEAT BAR RESTRAINT SYSTEM (Advanced Hand Controls)...3286
Description...3286
Seat Bar Inspection...3286
Seat Bar Maintenance...3286
AIR CLEANER SERVICE...3287
Replacing Filter Element...3287
FUEL SYSTEM...3289
Fuel Specifications...3289
Filling The Fuel Tank...3289
Fuel Filter...3289
Removing Air From The Fuel System...3290
ENGINE LUBRICATION SYSTEM...3291
Checking Engine Oil...3291
Oil Chart...3291
Replacing Oil And Filter...3291
ENGINE COOLING SYSTEM...3293
Cleaning The Cooling System...3293
Checking The Coolant Level...3293
Replacing The Coolant...3294
ALTERNATOR BELT...3295
Adjusting...3295
FAN GEARBOX...3295
Checking And Maintaining...3295
HYDRAULIC/HYDROSTATIC SYSTEM...3296
Checking And Adding Fluid...3296
Replacing Hydraulic/Hydrostatic Filter...3296
Replacing Hydraulic Fluid...3297
Breather Cap...3298
SPARK ARRESTOR MUFFLER...3299
Cleaning Procedure...3299
TIRE MAINTENANCE...3300
Wheel Nuts...3300
Tire Rotation...3300
Tire Mounting...3300
FINAL DRIVE TRANSMISSION (CHAINCASE)...3301
Checking and Adding Oil...3301
Removing Oil From The Chaincase...3301
DRIVE BELT...3302
Adjusting The Drive Belt Equipped With The Fixed Drive Idler...3302
Adjusting the Drive Belt Equipped With The Spring Loaded Drive Idler...3304
Replacing The Drive Belt...3305
LUBRICATION OF THE BOBCAT LOADER...3306
Procedure...3306
PIVOT PINS...3307
BOB–TACH...3308
Inspection and Maintenance...3308
REMOTE START SWITCH...3309
Procedure...3309
HYDRAULIC SYSTEM...3311
HYDRAULIC/ HYDROSTATIC SCHEMATICS...3315
TROUBLESHOOTING...3325
HYDRAULIC SYSTEM INFORMATION...3326
Tighten Procedures...3326
LIFT CYLINDER(S)...3327
Checking The Lift Cylinder(s) For Internal Leakage...3327
Removal And Installation...3327
TILT CYLINDER...3328
Checking The Tilt Cylinder For Internal Leakage...3328
Removal And Installation...3328
Rod End Seal Replacement...3329
HYDRAULIC CYLINDER IDENTIFICATION...3330
Lift Cylinder Components...3330
Tilt Cylinder Components...3331
HYDRAULIC CYLINDERS...3332
Disassembly...3332
Assembly...3334
BICS™ VALVE (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...3340
Removal...3340
Lift Arm By–Pass Orifice Disassembly...3341
Check Valve Disassembly...3341
Lock Valve Disassembly...3342
BICS™ Valve Solenoid Disassembly...3343
BICS™ Valve Solenoid Assembly...3344
Lock Valve Assembly...3345
Check Valve Assembly...3345
Lift Arm By–Pass Orifice Assembly...3346
Installation...3347
CONTROL VALVE (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...3348
Removal And Installation...3348
Identification Chart...3351
Disassembly...3352
Lift Base End Restrictor Disassembly...3352
Load Check Valve Disassembly...3352
Main Relief Valve Disassembly...3353
Port Relief Valve Disassembly...3354
Anti–Cavitation Valve Disassembly...3355
Rubber Boot Disassembly...3356
Lift Spool And Detent Disassembly...3357
Tilt Spool And Centering Spring Disassembly...3360
Auxiliary Spool Disassembly...3362
Auxiliary Electric Solenoid Disassembly...3363
Port–Auxiliary Section Disassembly...3364
Port–Auxiliary Section Assembly...3365
Auxiliary Electric Solenoid Assembly...3365
Auxiliary Spool Assembly...3366
Tilt Spool And Centering Spring Assembly...3367
Lift Spool And Detent Assembly...3369
Rubber Boot Assembly...3371
Anti–Cavitation Valve Assembly...3372
Port Relief Valve Assembly...3373
Main Relief Valve Assembly...3374
Load Check Valve Assembly...3374
Spool Seal Installation...3376
Cleaning And Inspection...3364
CONTROL VALVE (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 5086300001 & Above & S/N 513911001 & Above)...3377
Removal And Installation...3377
Identification Chart...3380
Disassembly And Assembly...3381
Load Check Valve...3381
Main Relief Valve...3382
Port Relief Valve...3382
Anti–Cavitation Valve...3383
Rubber Boot...3384
Lift Spool Detent...3385
Tilt Centering Spring...3389
Auxiliary Spool...3390
Auxiliary Electric Solenoid...3391
Inspection...3392
Identification And Installation Of Spool Seal...3393
MAIN RELIEF VALVE...3394
Checking...3394
Adjustment...3395
Removal And Installation...3395
MAIN RELIEF VALVE (753H)...3396
Checking The Dual Pressure (Low Setting)...3396
Checking The Dual Pressure (High Setting)...3397
Adjusting The Dual Pressure (Low Setting)...3399
Adjusting The Dual Pressure (High Setting)...3400
HYDRAULIC PUMP...3401
Removal And Installation...3401
Checking The Output Of The Hydraulic Pump...3403
Checking The Output Of The HIgh Flow Hydraulic Pump (753H)...3405
Disassembly And Assembly...3406
Inspection...3408
Identification...3408
Removal And Installation (753H)...3409
Identification (753H)...3412
Disassembly And Assembly (753H)...3413
HYDRAULIC FILTER HOUSING...3416
Removal And Installation...3416
HYDRAULIC FLUID RESERVOIR...3417
Removal And Installation...3417
CONTROL PEDALS...3418
Removal And Installation...3418
Pedal Adjustment...3418
SELECT VALVE (753H)...3419
Checking the Main Relief Valve in High Horsepower Select Valve...3419
Removal and Installation...3420
Disassembly and Assembly (New Style Valve)...3422
Solenoid Testing (New Style Valve)...3423
Disassembly and Assembly (Old Style Valve)...3424
Solenoid Testing (Old Style Valve)...3425
CONTROL INTERLOCK LINKAGE (Pedal or Mechanical Hand)...3426
Removal And Installation...3426
Adjustment...3427
LIFT LOCK BY–PASS VALVE...3428
Removal And Installation (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 & Above)...3428
Disassembly and Assembly (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & 513911001 & Above)...3429
Removal And Installation (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...3430
Disassembly And Assembly (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...3431
TILT LOCK VALVE...3432
Removal And Installation (S/N 508694508 & Below,S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 & Above)...3432
Disassembly And Assembly (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 &Above)...3434
HYDROSTATIC SYSTEM...3435
TROUBLESHOOTING...3437
HYDROSTATIC SYSTEM INFORMATION...3438
Replenishing Valve Function...3438
Checking Charge Pressure...3438
CONTROL PANEL...3439
Removal And Installation...3439
Steering Shock Removal And Installation...3440
Steering Shaft Removal And Installation...3440
Steering Shaft Disassembly And Assembly...3440
Steering Lever Removal And Installation...3441
Rubber Boot Replacement...3441
STEERING LINKAGE...3442
Removal And Installation...3442
Steering Linkage Adjustment...3444
Steering Neutral Adjustment...3446
HYDROSTATIC DRIVE MOTOR...3448
Removal And Installation...3448
Identification (S/N 512716001 & Above, 508695347 & Below, 511476001 & Above, 508630001 & Above & 513911001 & Above)...3449
Disassembly And Assembly (S/N 512716001 & Above, 508695347 & Below, 511476001 & Above, 508630149 & Above & 513911001 & Above)...3450
Inspection...3454
HYDROSTATIC MOTOR...3455
Parts Identification – (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)...3455
Disassembly (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)...3456
Assembly (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)...3461
HYDROSTATIC PUMP...3467
Removal And Installation...3467
Identification...3470
Disassembly And Assembly...3472
Inspection...3480
Swashplate Pre–Load (Earlier Models Only)...3482
DRIVE BELT HOUSING...3483
Removal And Installation...3483
SPRING LOADED DRIVE BELT TENSIONER PULLEY...3485
Removal And Installation...3485
Identification...3486
Disassembly...3487
Assembly...3490
FIXED DRIVE BELT TENSIONER PULLEY...3491
Removal And Installation...3491
Identification...3492
Disassembly...3493
Assembly...3495
Checking Pulley End Play...3499
OIL COOLER...3499
Removal And Installation...3499
DRIVE SYSTEM...3501
PARKING BRAKE...3503
Removal And Installation...3503
Disassembly And Assembly...3503
PARKING BRAKE DISC...3504
Removal And Installation...3504
TRACTION LOCK GUIDES...3505
Disassembly...3505
Assembly...3506
CHAINCASE FLUID...3508
Removing Oil From The Chaincase...3508
CHAINCASE COVERS...3509
Center Chaincase Cover Removal And Installation...3509
Front Chaincase Cover Removal And Installation...3510
Rear Chaincase Cover Removal And Installation...3510
MOTOR CARRIER...3511
Shaft Seal Replacement...3511
Removal And Installation...3513
Disassembly...3514
Assembly...3515
AXLE SEAL...3519
Removal And Installation...3519
AXLE, SPROCKET AND BEARINGS...3521
Removal And Installation...3521
DRIVE CHAIN...3525
Removal And Installation...3525
MAIN FRAME...3527
SEAT BAR (W/GAS CYLINDER)...3529
Removal And Installation...3529
Assembly...3531
Compressing The Gas Cylinder...3532
SEAT BAR (W/COMPRESSION SPRING)...3533
Removal And Installation...3533
Assembling Components...3536
Compression Spring Disassembly And Assembly...3536
OPERATOR CAB GAS CYLINDER...3537
Removal And Installation...3537
Disassembly And Assembly...3537
OPERATOR CAB...3538
Removal And Installation...3538
OPERATOR SEAT...3541
Removal And Installation...3541
BOB–TACH...3542
Removal And Installation...3542
Bob–Tach Lever And Wedge...3544
Bob–Tach Stops...3545
LIFT ARMS...3546
Removal And Installation...3546
REAR GRILL...3550
Removal And Installation...3550
FUEL TANK...3551
Removal And Installation...3551
Fuel Level Sender...3552
REAR DOOR...3553
Removal And Installation (Two Piece Door)...3553
Removal And Installation (One Piece Door)...3554
Hood Removal And Installation (Two Piece Door)...3555
Bumper Removal And Installation (Two Piece Door)...3555
Door Latch Removal And Installation...3555
Door Latch And Catch Adjustment...3556
REAR LIGHTS...3557
Removal and Installation (One Piece Door)...3557
ELECTRICAL SYSTEM...3559
ELECTRICAL SCHEMATICS...3561
TROUBLESHOOTING...3587
ELECTRICAL SYSTEM INFORMATION...3588
Description...3588
BATTERY...3589
Removal And Installation...3589
Servicing The Battery...3590
Using A Booster Battery (Jump Starting)...3591
ALTERNATOR...3592
Alternator Output Test...3592
Rectifier (Diode) Test...3592
Alternator Regulator Test...3593
Removal And Installation...3594
Adjusting The Alternator Belt...3594
Disassembly And Inspection...3595
Stator Continuity Test...3595
Stator Ground Test...3595
Rotor Continuity Test...3596
Rotor Ground Test...3596
Rectifier Continuity (Diode) Test...3596
Assembly...3597
STARTER (DELCO REMY)...3598
Checking The Starter...3598
Parts Identification...3599
Disassembly And Assembly...3600
Cleaning And Inspection...3602
STARTER (DENSO)...3602
Removal And Installation...3602
Parts Identification...3603
Disassembly...3604
Inspection And Repair...3609
No Load Test...3612
Assembly...3612
STANDARD INSTRUMENT PANEL...3619
Removal And Installation...3619
FRONT LIGHTS...3620
Removal And Installation...3620
RELAY SWITCHES...3621
Location...3621
ENGINE SERVICE...3623
TROUBLESHOOTING...3625
ENGINE SPEED CONTROL...3626
Removal And Installation...3626
Disassembly...3626
RADIATOR...3627
Removal And Installation...3627
ENGINE MUFFLER...3628
Removal And Installation...3628
BLOWER HOUSING/FAN GEARBOX...3629
Removal And Installation...3629
Tension Pulley Removal And Installation...3632
Blower Fan Disassembly And Assembly...3633
FAN GEARBOX...3636
Identification...3635
Disassembly...3636
Assembly...3641
Checking Backlash...3646
AIR CLEANER...3649
Removal And Installation...3649
ENGINE...3650
Removal And Installation...3650
Engine Mount Replacement...3655
FLYWHEEL...3656
Removal And Installation...3656
Flywheel Ring Gear...3656
ENGINE COMPRESSION...3657
Checking...3657
GLOW PLUGS...3658
Checking The Glow Plugs...3658
Removal And Installation...3659
FUEL INJECTION PUMP...3660
Checking The Injection Pump...3660
Adjusting Shut–Off Linkage...3660
FUEL INJECTION PUMP...3661
Removal And Installation...3661
Timing The Injection Pump...3664
FUEL INJECTOR NOZZLES...3665
Removal And Installation...3665
Checking The Injector Nozzle...3667
CYLINDER HEAD...3668
Removal And Installation...3668
Disassembly And Assembly...3669
Servicing The Cylinder Head...3670
Top Clearance...3670
VALVE, VALVE SEAT AND GUIDE...3671
Checking The Valve Guide...3671
Valve Spring...3673
VALVE CLEARANCE...3674
Adjustment...3674
ROCKER ARM AND SHAFT...3674
Checking...3674
TIMING GEARCASE COVER...3675
Removal And Installation...3675
IDLER GEAR AND CAMSHAFT...3677
Removal And Installation...3677
Servicing The Camshaft...3678
Servicing The Idler Gear And Shaft...3679
TIMING GEARS...3680
Checking Backlash...3680
FUEL CAMSHAFT...3681
Removal And Installation...3681
Governor...3681
CRANKSHAFT GEAR...3682
Removal And Installation ...3682
OIL PUMP...3682
Removal And Installation...3682
Oil Pump Service...3682
Checking Engine Oil Pressure...3683
Relief Valve...3683
PISTON AND CONNECTING ROD...3684
Removal And Installation...3684
Servicing The Piston And Connecting Rod...3685
Connecting Rod Alignment...3687
CRANKSHAFT AND BEARINGS...3688
Removal And Installation...3688
Servicing the Crankshaft and Bearings...3689
CYLINDER BORE...3693
Checking The Cylinder Bore...3693
WATER PUMP...3694
Disassembly And Assembly...3694
SYSTEMS ANALYSIS...3695
BICS™ (WITH PRESS TO OPERATE BUTTON)...3697
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...3697
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED - Key ON)...3697
Inspecting The Seat Bar Sensor (Engine RUNNING)...3697
Inspecting The Traction Lock (Engine RUNNING)...3697
Inspecting The Lift Arm By-Pass Control...3697
Additional Inspection For Loaders With Advanced Hand Controls...3697
Troubleshooting Chart...3698
BICS™ (Without Press To Operate Button)...3699
Inspecting The BICS Controller (Engine STOPPED –Key ON)...3699
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED–Key ON)...3699
Inspecting The Seat And Seat Bar Sensors (EngineRUNNING)...3699
Inspecting The Traction Lock (Engine RUNNING)...3699
Inspecting The Lift Arm By–Pass Control...3699
Maintenance...3700
Troubleshooting Chart...3701
BICS™ SYSTEM CONTROLLER...3702
Troubleshooting Guide...3702
Removal And Installation...3703
SEAT BAR SENSOR...3704
Troubleshooting Guide...3704
Seat Bar Sensor Test...3705
Removal And Installation...3706
BICS™ Controller Seat Bar Sensor Circuit Test...3707
SEAT SENSOR...3708
Troubleshooting Guide...3708
Seat Sensor Test...3709
Removal And Installation...3710
BICS™ Controller Seat Sensor Circuit Test...3711
TRACTION LOCK...3712
Troubleshooting Guide...3712
Removal And Installation...3713
BOSS® DIAGNOSTIC TOOL...3715
Procedure...3715
SENDER AND SENSOR...3715
Service Checks...3715
RPM SENSOR...3715
MONITOR SERVICE CODES...3716
TROUBLESHOOTING THE BOSS® & LCD DISPLAY...3718
BOSS® UNIT...3719
Removal And Installation...3719
BOSS® INSTRUMENT PANEL...3720
Removal And Installation...3720
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...3721
Controls Identification Chart...3721
SPECIFICATIONS...3723
SKID STEER LOADER SPECIFICATIONS...3725
753 - S/N 515811001 & Above, S/N 516211001 & Above...3725
PERFORMANCE...3725
CONTROLS...3725
ENGINE...3726
HYDRAULIC SYSTEM...3726
ELECTRICAL...3726
DRIVE SYSTEM...3727
CAPACITIES...3727
TIRES...3727
FLOOR PRESSURE...3727
753, 753H - S/N 508693001 & Above, S/N 508630001 & Above, S/N 511476001 & Above, S/N 512716001 & Above, S/N 513911001 & Above...3728
PERFORMANCE...3728
CONTROLS...3728
ENGINE...3729
HYDRAULIC SYSTEM...3729
ELECTRICAL...3729
DRIVE SYSTEM...3730
CAPACITIES...3730
TIRES...3730
FLOOR PRESSURE...3730
ENGINE SPECIFICATIONS...3731
Fuel Injection Nozzles...3731
Fuel Injection Pump...3731
Cylinder Head...3731
Valves...3731
Valve Springs...3731
Valve Timing...3731
Rocker Arms...3731
Camshaft...3732
Tappet...3732
Cylinders...3732
Piston Rings...3732
Pistons...3732
Connecting Rod...3732
Oil Pump...3732
Crankshaft...3733
Timing Gear...3733
Thermostat...3733
Crankshaft Re–Grind Data...3734
Torque For General Metric Bolts...3735
HYDRAULIC CONNECTION SPECIFICATIONS...3736
O–Ring Face Seal Connection...3736
Straight Thread O–Ring Fitting...3736
Tubelines And Hoses...3736
Flare Fitting...3736
O–Ring Flare Fitting...3737
Port Seal Fitting...3739
TORQUE SPECIFICATIONS FOR LOADER...3740
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...3741
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...3742
DECIMAL AND MILLIMETER EQUIVALENTS...3743
U.S. TO METRIC CONVERSION...3743
ADVANCED HAND CONTROL SYSTEM (AHC)...3745
WIRING SCHEMATICS W/ADVANCED HAND CONTROL OPTIONS...3747
AHC COMPONENTS...3757
Identification...3757
TROUBLESHOOTING (AHC)...3758
ACTUATOR VOLTAGE TEST...3760
Procedure...3760
HANDLE CONTROL UNIT TEST...3763
Procedure...3763
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...3766
Troubleshooting Chart...3766
ADVANCED HAND CONTROLS (AHC)...3766
Troubleshooting Chart...3766
AHC/PWM CONTROLLER...3767
Removal And Installation...3767
Description...3768
Conditions...3769
Troubleshooting Chart...3769
Handle Testing...3770
Solenoid Coil Testing...3770
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)...3771
Control Handle Unit Removal And Installation...3771
Control Unit Connector...3774
Switch Handle Removal And Installation...3775
AHC Handle Removal And Installation...3778
AHC Handle Disassembly And Assembly...3779
AHC Steering Lever Removal And Installation...3780
AHC Steering Lever Boot...3780
Actuators Removal And Installation...3781
Actuators Disassembly And Assembly...3782
Components Identification...3783
Controller Connector And Wire Identification...3784
AHC/PWM Controller Removal And Installation...3785
Handle Sensor Removal And Installation...3786
Handle Sensor Connector...3788
Switch Handle Removal And Installation...3789
Control Handle Removal And Installation...3792
Control Handle Disassembly And Assembly...3793
Control Lever Removal And Installation...3794
Control Lever Boot...3795
Actuators Disassembly And Assembly...3796
BICS™ VALVE...3797
Lift Arm By–Pass Orifice...3797
Check Valve...3798
Lock Valve...3798
BICS™ Valve Solenoid...3799
Removal And Installation...3800
HYDRAULIC CONTROL VALVE...3801
Removal And Installation...3801
Identification Chart...3803
Disassembly And Assembly...3804
Load Check Valve...3804
Lift Base End Restrictor...3804
Main Relief Valve...3805
Port Relief Valve (Lift)...3806
Anti–Cavitation/Port Relief Valve...3806
Port Relief Valve (Tilt)...3807
Anti–Cavitation Valve...3807
Rubber Boot...3808
Lift And Tilt Spool...3809
Inspection...3811
Auxiliary Spool...3812
Auxiliary Electrical Solenoid...3813
Spool Seal Installation...3814
H–Port Auxiliary Section...3815
SERVICE MANUAL REVISIONS...3817
753, 753H–1...3817
753/753H–2...3819
753/753H–3...3821
753/753H–4...3823
753/753H–5...3825
6720326 (8-90) - 753 Loader Service Manual...3827
6900967 (9-00) - 751 Operation & Maintenance Manual...4231
OPERATOR SAFETY WARNINGS...4233
CONTENTS...4235
REFERENCE INFORMATION...4235
BOBCAT COMPANY IS ISO 9001 CERTIFIED...4236
REGULAR MAINTENANCE ITEMS...4236
FOREWORD...4237
SERIAL NUMBER LOCATIONS...4239
LOADER SERIAL NUMBER...4239
ENGINE SERIAL NUMBER...4239
DELIVERY REPORT...4239
BOBCAT LOADER IDENTIFICATION...4240
FEATURES AND ACCESSORIES...4241
SAFETY...4243
SAFETY INSTRUCTIONS FOR BOBCAT SKID–STEER LOADERS AND ATTACHMENTS...4245
SAFETY IS THE OPERATOR’S RESPONSIBILITY...4245
BEFORE OPERATING THE BOBCAT LOADER...4246
SAFE OPERATION NEEDS A QUALIFIED OPERATOR *...4246
FIRE PREVENTION...4247
MACHINE SIGNS (DECALS)...4248
OPERATING INSTRUCTIONS...4251
INSTRUMENT PANEL IDENTIFICATION...4253
Left Panel – Standard and Deluxe Instrument Panels...4253
Right Panel – Standard Instrument Panel (With Key Switch) ...4254
Right Panel – Deluxe Instrument Panel (With Keyless Start)...4255
Option and Field Accessory Panels (If Equipped)...4256
LIFT ARM BY–PASS CONTROL...4257
TRACTION LOCK OVERRIDE...4257
ENGINE SPEED CONTROL...4258
PARKING BRAKE...4258
STEERING LEVERS...4259
STOPPING THE BOBCAT LOADER...4259
SEAT BAR RESTRAINT SYSTEM...4260
HYDRAULIC CONTROLS...4261
Foot Pedals...4261
Lift Arm Operation...4261
Lift Arm Float Position...4261
Tilt Operation...4261
Advanced Hand Controls (If Equipped)...4261
Lift Arm Operation...4261
Lift Arm Float Position...4261
Tilt Operation...4261
Quick Couplers...4262
Releasing Hydraulic Pressure (Loader andAttachment)...4262
Attachment Auxiliary Hydraulics (If Equipped)...4263
Auxiliary Hydraulics Button...4263
FRONT Auxiliary Hydraulics Operation...4263
REAR Auxiliary Hydraulics Operation ...4263
Attachment Control Device (ACD) (If Equipped)...4264
Bucket Position Valve Operation (If Equipped)...4264
DAILY INSPECTION...4265
Daily Inspection and Maintenance...4265
PRE–STARTING PROCEDURE...4266
STARTING THE ENGINE...4268
Standard Instrument Panel (With Key Switch)...4268
Deluxe Instrument Panel (With Keyless Start)...4270
Cold Temperature Starting...4272
Warming the Hydraulic/Hydrostatic System...4272
STOPPING THE ENGINE...4272
MONITORING THE DISPLAY PANEL...4273
ATTACHMENTS AND BUCKETS...4274
Bob–Tach...4275
Installing The Bucket Or Attachment...4275
Removing The Bucket Or Attatchment...4276
OPERATING PROCEDURE...4277
Filling the Bucket (Foot Pedals)...4278
Filling the Bucket (Advanced Hand Controls)...4278
Emptying the Bucket (Foot Pedals)...4279
Emptying the Bucket (Hand Controls)...4279
Leveling the Ground (Using Lift Arms in Float Position) (Foot Pedals)...4279
Leveling the Ground (Using Lift Arms in Float Position) (Advanced Hand Controls)...4279
Digging Into the Ground (Foot Pedals)...4280
Digging Into the Ground (Advanced Hand Controls)...4280
Backfilling (Foot Pedals)...4280
Backfilling (Advanced Hand Controls)...4280
PARKING THE BOBCAT LOADER...4281
TRANSPORTING THE BOBCAT LOADER...4282
TOWING THE LOADER...4282
LIFTING THE LOADER...4283
Single Point Lift...4283
PREVENTIVE MAINTENANCE...4285
MAINTENANCE SAFETY...4287
SERVICE SCHEDULE...4289
LIFT ARM SUPPORT DEVICE...4290
Engaging The Lift Arm Support Device...4290
Disengaging The Lift Arm Support Device...4291
HEATER...4291
Filter Cleaning and Maintenance...4291
OPERATOR CAB...4292
Raising The Operator Cab...4292
Lowering The Operator Cab...4293
Emergency Exit...4294
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4295
Inspecting the Seat Bar...4295
Maintaining the Seat Bar...4295
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...4296
Inspecting the Seat Bar...4296
Maintaining the Seat Bar...4296
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4297
Inspecting The BICS™ Controller...4297
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED – Key ON)...4297
Inspecting The Seat Bar Sensor (Engine RUNNING)...4297
Inspecting The Traction Lock (Engine RUNNING)...4297
Inspecting The Lift Arm By–Pass Control...4297
Additional Inspection For Loaders With Advanced Hand Controls (AHC)...4297
REAR DOOR...4298
Opening And Closing The Rear Door...4298
Adjusting The Rear Door...4298
REAR GRILL...4299
AIR CLEANER SERVICE...4300
Replacing Filter Element...4300
FUEL SYSTEM...4302
Fuel Specifications...4302
Filling The Fuel Tank...4302
Fuel Filter...4302
Removing Air From The Fuel System...4303
ENGINE LUBRICATION SYSTEM...4304
Checking Engine Oil...4304
Replacing Oil And Filter...4304
ENGINE COOLING SYSTEM...4306
Cleaning The Cooling System...4306
Replacing The Coolant...4307
ALTERNATOR BELT...4308
Adjusting...4308
ELECTRICAL SYSTEM...4309
Description...4309
Cleaning Battery Terminals...4309
Fuse Location...4309
Using A Booster Battery (Jump Starting)...4310
Removing And Installing The Battery...4311
HYDRAULIC/HYDROSTATIC SYSTEM...4312
Checking And Adding Fluid...4312
Replacing Hydraulic Fluid and Case Dain Filters...4313
Breather Cap...4314
SPARK ARRESTOR MUFFLER...4315
TIRE MAINTENANCE...4316
Wheel Nuts...4316
Rotating...4316
Mounting...4316
FINAL DRIVE TRANSMISSION (CHAINCASE)...4317
Checking And Adding Oil...4317
Removing Oil From The Chaincase...4317
FAN GEARBOX...4317
Checking And Maintaining...4317
DRIVE BELT...4318
Adjusting The Drive Belt...4318
Replacing The Drive Belt...4318
LUBRICATION OF THE BOBCAT LOADER...4319
PIVOT PINS...4320
BOB–TACH...4321
Inspection and Maintenance...4321
SYSTEM SETUP AND ANALYSIS...4323
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4325
Troubleshooting Chart...4325
DELUXE INSTRUMENTATION SERVICE CODES...4326
Deluxe Instrumentation Panel Setup...4327
Deluxe Panel Upgrade...4327
Icon Identification...4327
Deluxe Panel Setup...4327
Passwords...4328
Changing the Password...4328
MACHINE SIGN TRANSLATIONS...4329
IMPORTANT - 6560573...4331
SERVICE SCHEDULE - 6718398...4332
WARNING - 6718698 ...4334
WARNING - 6718699...4335
WARNING - 6579528...4336
WARNING - 6577754...4336
DANGER - 6579528...4336
DANGER - 6579509...4336
DANGER - 6717343...4337
WARNING - 6579544...4337
SPECIFICATIONS...4339
SKID STEER LOADER SPECIFICATIONS...4341
Dimensional Specifications...4341
Performance Specifications...4341
Engine...4341
Loader Controls...4341
Hydraulic System...4341
Electrical System...4341
Capacities...4341
BOBCAT APPROVED ATTACHMENTS & ACCESSORIES...4342
ADDITIONAL PUBLICATIONS AND TRAINING MATERIALS...4345
WARRANTY...4347
6900786 (9-00) - 751 Operation & Maintenance Manual...4349
OPERATOR SAFETY WARNINGS...4351
CONTENTS...4353
REFERENCE INFORMATION...4353
BOBCAT COMPANY IS ISO 9001 CERTIFIED...4354
REGULAR MAINTENANCE ITEMS...4354
FOREWORD...4355
SERIAL NUMBER LOCATIONS...4357
LOADER SERIAL NUMBER...4357
ENGINE SERIAL NUMBER...4357
DELIVERY REPORT...4357
BOBCAT LOADER IDENTIFICATION...4358
OPTIONS AND ACCESSORIES...4359
SAFETY...4361
SAFETY INSTRUCTIONS FOR BOBCAT SKID–STEER LOADERS AND ATTACHMENTS...4363
SAFETY IS THE OPERATOR’S RESPONSIBILITY...4363
BEFORE OPERATING THE BOBCAT LOADER...4364
SAFE OPERATION NEEDS A QUALIFIED OPERATOR *...4364
FIRE PREVENTION...4365
MACHINE SIGNS (DECALS)...4366
OPERATING INSTRUCTIONS...4369
INSTRUMENT PANEL...4371
Front Panel ...4371
Side Console*...4371
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4372
Lift Arm By–Pass Control...4373
Traction Lock Override...4373
Auxiliary Hydraulic System...4373
ENGINE SPEED CONTROL...4374
PARKING BRAKE...4374
STEERING LEVERS...4375
STOPPING THE BOBCAT LOADER...4375
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4376
SEAT BAR RESTRAINT SYSTEM (MECHANICAL HAND CONTROLS)...4377
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...4378
BAR RESTRAINT SYSTEM (A...4379
Foot Pedals...4379
Lift Arm Operation...4379
Lift Arm Float Position...4379
Tilt Operation...4379
Bucket Position Valve Operation (If Equipped)...4379
Hand Controls (Mechanical and Advanced Hand Controls)...4380
Lift Arm Operation...4380
Lift Arm Float Position...4380
Tilt Operation...4380
Bucket Position Valve Operation (If Equipped)...4380
Auxiliary Hydraulics (If Equipped)...4381
Quick Couplers...4381
Auxiliary Hydraulics Switch...4382
FRONT Auxiliary Hydraulics Operation ...4382
FRONT Auxiliary Hydraulics Continuous Operation(RIGHT Steering Lever)...4382
REAR Auxiliary Hydraulics Operation (LEFT Steering Lever)...4382
Attachment Functions Control...4383
Relieving Hydraulic Pressure...4383
DAILY INSPECTION...4384
Daily Inspection and Maintenance...4384
GETTING READY FOR OPERATION...4385
STARTING THE ENGINE...4386
Normal Starting...4387
Cold Temperature Starting...4388
Warming the Hydraulic/Hydrostatic System...4388
STOPPING THE ENGINE...4388
ATTACHMENTS AND BUCKETS...4389
Installing The Bucket Or Attachment...4390
Removing The Bucket Or Attachment ...4391
OPERATING PROCEDURES...4392
OPERATING PROCEDURES (FOOT PEDALS) ...4393
Filling the Bucket...4393
Emptying the Bucket...4393
Digging Into the Ground...4394
Leveling the Ground (Using Lift Arms in Float Position)...4394
Backfilling...4395
PARKING THE BOBCAT LOADER...4395
OPERATING PROCEDURE (HAND CONTROLS)...4396
Filling The Bucket...4396
Emptying The Bucket...4396
Digging Into The Ground...4397
Leveling The Ground (Using Lift Arms In Float Position)...4397
Backfilling...4398
PARKING THE BOBCAT LOADER...4398
TRANSPORTING THE BOBCAT LOADER...4399
TOWING THE LOADER...4399
LIFTING THE LOADER...4400
Four Point Lift...4400
Single Point Lift...4400
PREVENTIVE MAINTENANCE...4401
MAINTENANCE SAFETY...4403
SERVICE SCHEDULE...4405
LIFT ARM SUPPORT DEVICE...4406
Engaging The Lift Arm Support Device...4406
Disengaging The Lift Arm Support Device...4407
OPERATOR CAB...4408
Raising The Operator Cab...4408
Lowering The Operator Cab...4409
Emergency Exit...4410
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4411
Inspecting The Seat Bar...4411
Maintaining The Seat Bar...4411
SEAT BAR RESTRAINT SYSTEM (MECHANICAL HAND CONTROLS)...4412
Inspecting The Seat Bar...4412
Maintaining The Seat Bar...4412
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...4413
Inspecting The Seat Bar...4413
Maintaining The Seat Bar...4413
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4414
Inspecting The BICS™ Controller...4414
Inspecting Deactivation Of The Auxiliary HydraulicsSystem (Engine STOPPED – Key ON)...4414
Inspecting The Seat Bar Sensor (Engine RUNNING)...4414
Inspecting The Traction Lock (Engine RUNNING)...4414
Inspecting The Lift Arm By–Pass Control...4414
Additional Inspection For Loaders With Advanced Hand Controls...4414
REAR DOOR...4415
Latch Adjustment...4415
AIR CLEANER SERVICE...4416
Replacing Filter Element...4416
FUEL SYSTEM...4418
Fuel Specifications...4418
Filling The Fuel Tank...4418
Fuel Filter...4418
Removing Air From The Fuel System...4419
ENGINE LUBRICATION SYSTEM...4420
Checking Engine Oil...4420
Oil Chart...4420
Replacing Oil And Filter...4420
ENGINE COOLING SYSTEM...4422
Cleaning The Cooling System...4422
Checking The Coolant Level...4422
Replacing The Coolant...4423
ALTERNATOR BELT...4424
Adjusting...4424
ELECTRICAL SYSTEM...4425
Description...4425
Cleaning The Battery Terminals...4425
Fuse Location...4425
Using A Booster Battery (Jump Starting)...4426
Removing And Installing The Battery...4427
HYDRAULIC/HYDROSTATIC SYSTEM...4429
Checking And Adding Fluid...4429
Replacing Hydraulic/Hydrostatic Filter...4429
Replacing Hydraulic Fluid...4430
Breather Cap...4431
SPARK ARRESTOR MUFFLER...4432
TIRE MAINTENANCE...4433
Wheel Nuts...4433
Tire Rotation...4433
Tire Mounting...4433
FINAL DRIVE TRANSMISSION (CHAINCASE)...4434
Checking And Adding Oil...4434
Removing Oil From The Chaincase...4434
FAN GEARBOX...4435
Checking And Maintaining...4435
DRIVE BELT...4436
Adjusting The Drive Belt...4436
LUBRICATING THE BOBCAT LOADER...4438
PIVOT PINS...4439
BOB–TACH...4440
Inspection and Maintenance...4440
SYSTEMS ANALYSIS...4441
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4443
Troubleshooting Chart...4443
ADVANCED HAND CONTROLS (AHC)...4443
Troubleshooting Chart...4443
MACHINE SIGN TRANSLATIONS...4445
IMPORTANT - 6560573...4447
SERVICE SCHEDULE - 6715563...4448
WARNING - 6579510...4450
WARNING - 6703725...4451
WARNING - 6579639...4452
WARNING - 6577754...4452
DANGER - 6579639...4452
DANGER - 6579509...4452
DANGER - 6717343...4453
WARNING - 6575944...4453
SPECIFICATIONS...4455
LOADER SPECIFICATIONS...4457
Specifications...4457
PERFORMANCE...4457
CONTROLS...4457
ENGINE...4457
HYDRAULIC SYSTEM...4458
ELECTRICAL...4458
DRIVE SYSTEM...4458
CAPACITIES...4458
TIRES...4458
BOBCAT COMPANY APPROVED ATTACHMENTS & ACCESSORIES...4459
ADDITIONAL PUBLICATIONS AND TRAINING MATERIALS...4461
WARRANTY...4463
6900417 (8-98) - 751 Operation & Maintenance Manual...4465
OPERATOR SAFETY WARNINGS...4467
CONTENTS...4469
REFERENCE INFORMATION...4469
MELROE COMPANY IS ISO 9001 CERTIFIED...4470
REGULAR MAINTENANCE ITEMS...4470
FOREWORD...4471
SERIAL NUMBER LOCATIONS...4473
LOADER SERIAL NUMBER...4473
ENGINE SERIAL NUMBER...4473
DELIVERY REPORT...4473
BOBCAT LOADER IDENTIFICATION...4474
OPTIONS AND ACCESSORIES...4475
SAFETY...4477
SAFETY INSTRUCTIONS...4479
SAFETY IS THE OPERATOR’S RESPONSIBILITY...4479
BEFORE OPERATING THE BOBCAT LOADER...4480
SAFE OPERATION NEEDS A QUALIFIED OPERATOR*...4480
FIRE PREVENTION...4481
MACHINE SIGNS (DECALS)...4482
OPERATING INSTRUCTIONS...4485
INSTRUMENT PANEL...4487
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4488
Lift Arm By–Pass Control...4489
Traction Lock Override...4489
Seat Sensor Override (If Equipped)...4489
Auxiliary Hydraulic System...4489
ENGINE SPEED CONTROL...4490
PARKING BRAKE...4490
STEERING LEVERS...4491
STOPPING THE BOBCAT LOADER...4491
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4492
SEAT BAR RESTRAINT SYSTEM (MACHANICAL HAND CONTROLS)...4493
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...4494
HYDRAULIC CONTROLS...4495
Foot Pedals...4495
Lift Arm Operation...4495
Lift Arm Float Position...4495
Tilt Operation...4495
Bucket Position Valve Operation (If Equipped)...4495
Hand Controls (Mechanical and Advanced Hand Controls)...4496
Lift Arm Operation...4496
Lift Arm Float Position...4496
Tilt Operation...4496
Bucket Position Valve Operation (If Equipped)...4496
Advanced Hand Controls (AHC) (If Equipped)...4496
Auxiliary Hydraulics (If Equipped)...4497
Quick Couplers (Flush Face)...4497
Auxiliary Hydraulics Switch...4498
FRONT Auxiliary Hydraulics Operation ...4498
FRONT Auxiliary Hydraulics Continuous Operation...4498
REAR Auxiliary Hydraulics Operation...4498
Attachment Functions Control...4499
Relieving Hydraulic Pressure...4499
DAILY INSPECTION...4500
Daily Inspection and Maintenance...4500
GETTING READY FOR OPERATION...4501
STARTING THE ENGINE...4502
Normal Starting...4503
Cold Temperature Starting...4504
Warming the Hydraulic/Hydrostatic System...4504
STOPPING THE ENGINE...4504
ATTACHMENTS AND BUCKETS...4505
Installing The Bucket Or Attachment...4506
Removing The Bucket Or Attachment ...4507
OPERATING PROCEDURES...4508
Filling the Bucket...4509
Emptying the Bucket...4509
Digging Into the Ground...4510
Leveling the Ground (Using Lift Arms in FloatPosition)...4510
Backfilling...4511
PARKING THE BOBCAT LOADER...4511
OPERATING PROCEDURE (HAND CONTROLS)...4512
Filling The Bucket...4512
Emptying The Bucket...4512
Digging Into The Ground...4513
Leveling The Ground (Using Lift Arms In Float Position)...4513
Backfilling...4514
PARKING THE BOBCAT LOADER...4514
TRANSPORTING THE BOBCAT LOADER...4515
TOWING THE LOADER...4515
STOPPING THE BOBCAT LOADER...4515
LIFTING THE LOADER...4516
Four Point Lift...4516
Single Point Lift...4516
PREVENTIVE MAINTENANCE...4517
MAINTENANCE SAFETY...4519
SERVICE SCHEDULE...4521
LIFT ARM SUPPORT DEVICE...4522
Engaging The Lift Arm Support Device...4522
Disengaging The Lift Arm Support Device...4523
OPERATOR CAB...4524
Raising The Operator Cab...4524
Lowering The Operator Cab...4525
Emergency Exit...4526
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4527
Inspecting The Seat Bar...4527
Maintaining The Seat Bar...4527
SEAT BAR RESTRAINT SYSTEM (MECHANICAL HAND CONTROLS)...4528
Inspecting The Seat Bar...4528
Maintaining The Seat Bar...4528
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...4529
Inspecting The Seat Bar...4529
Maintaining The Seat Bar...4529
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4530
Inspecting The BICS™ Controller ...4530
Inspecting Deactivation Of The Auxiliary HydraulicsSystem (Engine STOPPED – Key ON)...4530
Inspecting The Seat And Seat Bar Sensors (Engine RUNNING)...4530
Inspecting The Traction Lock (Engine RUNNING)...4530
Inspecting The Lift Arm By–Pass Control...4530
Inspecting the BICS™ Lock Valves (Advanced Hand Control Only)...4531
Maintenance...4531
REAR DOOR...4532
Latch Adjustment...4532
REAR GRILL...4532
AIR CLEANER SERVICE...4533
Replacing Filter Element...4533
FUEL SYSTEM...4535
Fuel Specifications...4535
Filling The Fuel Tank...4535
Fuel Filter...4535
Removing Air From The Fuel System...4536
ENGINE LUBRICATION SYSTEM...4537
Checking Engine Oil...4537
Oil Chart...4537
Replacing Oil And Filter...4537
ENGINE COOLING SYSTEM...4539
Cleaning The Cooling System...4539
Checking The Coolant Level...4539
Replacing The Coolant...4540
ALTERNATOR BELT...4541
Adjusting...4541
ELECTRICAL SYSTEM...4542
Description...4542
Cleaning The Battery Terminals...4542
Fuse Location...4542
Using A Booster Battery (Jump Starting)...4543
Removing And Installing The Battery...4544
HYDRAULIC/HYDROSTATIC SYSTEM...4546
Checking And Adding Fluid...4546
Replacing Hydraulic/Hydrostatic Filter...4546
Replacing Hydraulic Fluid...4547
Breather Cap...4548
SPARK ARRESTOR MUFFLER...4549
TIRE MAINTENANCE...4550
Wheel Nuts...4550
Tire Rotation...4550
Tire Mounting...4550
FINAL DRIVE TRANSMISSION (CHAINCASE)...4551
Checking And Adding Oil...4551
Removing Oil From The Chaincase...4551
FAN GEARBOX...4552
Checking And Maintaining...4552
DRIVE BELT...4553
Adjusting The Drive Belt...4553
Replacing The Drive Belt...4554
LUBRICATING THE BOBCAT LOADER...4555
PIVOT PINS...4556
BOB–TACH...4557
Inspection and Maintenance...4557
SYSTEMS ANALYSIS...4559
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4561
Troubleshooting Chart...4561
ADVANCED HAND CONTROLS (AHC)...4561
Troubleshooting Chart...4561
MACHINE SIGN TRANSLATIONS...4563
IMPORTANT - 6560573...4565
WARNING - 6579511...4566
SERVICE SCHEDULE - 6708212 ...4567
WARNING - 6579510...4569
WARNING - 6703725...4570
WARNING - 6579528...4571
WARNING - 6577754...4571
DANGER - 6579639...4571
DANGER - 6579509...4571
SPECIFICATIONS...4573
PERFORMANCE...4575
CONTROLS...4575
ENGINE...4575
HYDRAULIC SYSTEM...4576
ELECTRICAL...4576
DRIVE SYSTEM...4576
CAPACITIES...4576
TIRES...4576
MELROE COMPANY APPROVED ATTACHMENTS & ACCESSORIES...4577
ADDITIONAL PUBLICATIONS...4580
WARRANTY...4581
6900370 (4-99) - 751 (Foot Pedal & Hand Control) Operation & Maintenance Manual...4583
OPERATOR SAFETY WARNINGS...4585
CONTENTS...4587
REFERENCE INFORMATION...4587
MELROE COMPANY IS ISO 9001 CERTIFIED...4588
REGULAR MAINTENANCE ITEMS...4588
FOREWORD...4589
SERIAL NUMBER LOCATIONS...4591
LOADER SERIAL NUMBER...4591
ENGINE SERIAL NUMBER...4591
DELIVERY REPORT...4591
BOBCAT LOADER IDENTIFICATION...4592
OPTIONS AND ACCESSORIES...4593
SAFETY...4595
SAFETY INSTRUCTIONS...4597
SAFETY IS THE OPERATOR’S RESPONSIBILITY...4597
BEFORE OPERATING THE BOBCAT LOADER...4598
SAFE OPERATION NEEDS A QUALIFIED OPERATOR*...4598
FIRE PREVENTION...4599
MACHINE SIGNS (DECALS)...4600
OPERATING INSTRUCTIONS...4603
INSTRUMENT PANEL...4605
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4606
Lift Arm By–Pass Control...4607
Traction Lock Override...4607
Seat Sensor Override (If Equipped)...4607
ENGINE SPEED CONTROL...4608
PARKING BRAKE...4608
STEERING LEVERS...4609
STOPPING THE BOBCAT LOADER...4609
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4610
SEAT BAR RESTRAINT SYSTEM (HAND CONTROLS)...4612
HYDRAULIC CONTROLS...4613
Foot Pedals...4613
Lift Arm Operation...4613
Lift Arm Float Position...4613
Tilt Operation...4613
Bucket Position Valve Operation (Option or Field Accessory)...4613
Hand Controls...4614
Lift Arm Operation...4614
Lift Arm Float Position...4614
Tilt Operation...4614
Bucket Position Valve Operation (Option or Field Accessory)...4614
Auxiliary Hydraulics (Option or Field Accessory)...4615
Quick Couplers (Flush Face)...4615
Auxiliary Hydraulics Mode Switch...4616
FRONT Auxiliary Hydraulics Operation ...4616
FRONT Auxiliary Hydraulics Continuous Operation (Detent)...4616
REAR Auxiliary Hydraulics Operation ...4616
Attachment Functions Control...4617
Relieving Hydraulic Pressure...4617
DAILY INSPECTION...4618
GETTING READY FOR OPERATION...4619
STARTING THE ENGINE...4620
Normal Starting...4621
Cold Temperature Starting...4622
Warming the Hydraulic/Hydrostatic System...4622
STOPPING THE ENGINE...4622
ATTACHMENTS AND BUCKETS...4623
Installation...4624
Removal...4625
OPERATING PROCEDURES...4626
OPERATING PROCEDURES (FOOT PEDALS) ...4627
Filling the Bucket...4627
Emptying the Bucket...4627
Digging Into the Ground...4628
Leveling the Ground (Using Lift Arms in Float Position)...4628
Backfilling...4629
PARKING THE BOBCAT LOADER...4629
OPERATING PROCEDURES (HAND CONTROLS)...4630
Filling The Bucket...4630
Emptying The Bucket...4630
Digging Into The Ground...4631
Leveling The Ground (Using Lift Arms In FloatPosition)...4631
Backfilling...4632
PARKING THE BOBCAT LOADER...4632
TRANSPORTING THE BOBCAT LOADER...4633
STOPPING THE BOBCAT LOADER...4633
LIFTING THE LOADER...4634
Four Point Lift...4634
PREVENTIVE MAINTENANCE...4635
MAINTENANCE SAFETY...4637
SERVICE SCHEDULE...4639
OPERATOR CAB...4640
Raising the Operator Cab...4640
Lowering the Operator Cab...4641
Emergency Exit...4642
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4643
Inspecting The Seat Bar...4643
Maintaining The Seat Bar...4643
SEAT BAR RESTRAINT SYSTEM (HAND CONTROLS)...4644
Inspecting The Seat Bar...4644
Maintaining The Seat Bar...4644
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4645
Inspecting the BICS™ Controller (Engine STOPPED– Key ON)...4645
Inspecting the Seat and Seat Bar Sensors (Engine RUNNING)...4645
Inspecting the Traction Lock (Engine RUNNING)...4645
Inspecting the Lift Arm By–Pass Control...4645
Maintenance...4646
PIVOT PINS...4647
TIRE MAINTENANCE...4647
Wheel Nuts...4647
Tire Rotation...4647
Tire Mounting...4647
LIFT ARM SUPPORT DEVICE...4648
Engaging the Lift Arm Support Device...4648
Disengaging the Lift Arm Support Device...4649
BOB–TACH...4649
Inspection And Maintenance...4649
REAR DOOR...4650
Latch Adjustment...4650
REAR GRILL...4651
AIR CLEANER SERVICE...4652
Condition Indicator...4652
Replacing Filter Element...4652
FUEL SYSTEM...4653
Fuel Specifications...4653
Filling the Fuel Tank...4653
Fuel Filter...4653
Removing Air From the Fuel System...4654
ENGINE LUBRICATION SYSTEM...4655
Checking Engine Oil...4655
Oil Chart...4655
Replacing Oil and Filter...4655
ENGINE COOLING SYSTEM...4657
Cleaning the Cooling System...4657
Replacing the Coolant...4658
ALTERNATOR BELT...4659
Adjusting the Alternator Belt...4659
TIMING BELT (Engine)...4659
DRIVE BELT...4660
Adjusting the Drive Belt...4660
Drive Belt Replacement...4662
ELECTRICAL SYSTEM...4663
Description...4663
Cleaning Battery Terminals...4663
Fuse Location...4663
Using A Booster Battery (Jump Starting)...4664
Removing and Installing the Battery...4665
FAN GEARBOX...4666
Checking and Maintaining...4666
FINAL DRIVE TRANSMISSION (CHAINCASE)...4666
Checking and Adding Oil...4666
HYDRAULIC/HYDROSTATIC SYSTEM...4667
Checking and Adding Fluid...4667
Replacing Hydraulic/Hydrostatic Filter...4667
Replacing Hydraulic Fluid...4668
Hydraulic Reservoir Breather Cap...4669
SPARK ARRESTOR MUFFLER...4670
LUBRICATION OF THE BOBCAT LOADER...4671
SYSTEMS ANALYSIS...4673
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4675
Troubleshooting Chart...4675
MACHINE SIGN TRANSLATIONS...4677
IMPORTANT - 6560573...4679
WARNING - 6579511...4680
SERVICE SCHEDULE - 6708212...4681
WARNING - 6579510...4683
WARNING - 6703725...4684
WARNING - 6579528...4685
WARNING - 6577754...4685
DANGER - 6579639...4685
DANGER - 6579509...4685
SPECIFICATIONS...4687
SPECIFICATIONS...4689
PERFORMANCE...4689
CONTROLS...4689
ENGINE...4689
HYDRAULIC SYSTEM...4690
ELECTRICAL...4690
DRIVE SYSTEM...4690
CAPACITIES...4690
TIRES...4690
FLOOR PRESSURE...4690
MELROE COMPANY APPROVED ATTACHMENTS & ACCESSORIES...4691
ADDITIONAL PUBLICATIONS...4694
WARRANTY...4695
6900969 (12-06) - 753 Operation & Maintenance Manual...4697
OPERATOR SAFETY WARNINGS...4699
CONTENTS...4701
FOREWORD...4703
BOBCAT COMPANY IS ISO 9001:2000 CERTIFIED...4705
REGULAR MAINTENANCE ITEMS...4705
MOTOR OIL...4705
SERIAL NUMBER LOCATIONS...4706
Loader Serial Number...4706
Engine Serial Number...4706
DELIVERY REPORT...4706
BOBCAT LOADER IDENTIFICATION...4707
FEATURES, ACCESSORIES AND ATTACHMENTS...4708
Standard Items...4708
Options and Accessories...4708
Buckets Available...4709
Attachments...4709
SAFETY...4711
SAFETY INSTRUCTIONS...4713
Before Operation...4713
Safe Operation Is The Operator’s Responsibility...4714
Safe Operation Needs A Qualified Operator...4714
Fire Prevention...4715
MACHINE SIGNS (DECALS)...4716
OPERATING INSTRUCTIONS...4719
INSTRUMENT PANEL IDENTIFICATION...4721
Left Panel - Standard and Deluxe Instrument Panels...4721
Right Panel - Standard Instrument Panel (With Key Switch)...4722
Right Panel - Deluxe Instrument Panel (With Keyless Start)...4723
Option and Field Accessory Panels (If Equipped)...4725
Side Accessory Panel...4725
Front Accessory Panel...4725
Cab Light...4726
LIFT ARM BY-PASS CONTROL...4726
TRACTION LOCK OVERRIDE...4726
ENGINE SPEED CONTROL...4727
PARKING BRAKE (EARLY MODELS)...4727
PARKING BRAKE (LATER MODELS)...4727
STEERING LEVERS...4728
STOPPING THE BOBCAT LOADER...4728
SEAT BAR RESTRAINT SYSTEM...4729
HYDRAULIC CONTROLS...4730
Foot Pedals...4730
Advanced Hand Controls (If Equipped)...4730
Quick Couplers...4731
Releasing Hydraulic Pressure (Loader and Attachment)...4731
Attachment Auxiliary Hydraulic Controls (If Equipped)...4732
Auxiliary Hydraulics Button...4732
FRONT Auxiliary Hydraulics Operation...4733
Variable Flow...4733
Maximum Flow Only...4733
Continuous Flow...4733
REAR Auxiliary Hydraulics Operation...4733
Attachment Control Device (ACD) (If Equipped)...4734
Bucket Position Valve Operation (If Equipped)...4735
DAILY INSPECTION...4736
PRE-STARTING PROCEDURE...4737
STARTING THE ENGINE...4739
Standard Instrument Panel (With Key Switch)...4739
Deluxe Instrument Panel (With Keyless Start)...4740
Cold Temperature Starting...4742
Warming the Hydraulic/Hydrostatic System...4742
STOPPING THE ENGINE...4743
MONITORING THE DISPLAY PANEL...4744
ATTACHMENTS AND BUCKETS...4745
Bob-Tach...4746
Power Bob-Tach...4748
Power Bob-Tach...4750
OPERATING PROCEDURE...4751
Filling the Bucket (Foot Pedals)...4752
Filling the Bucket (Hand Controls)...4752
Emptying the Bucket (Foot Pedals)...4753
Emptying the Bucket (Hand Controls)...4753
Leveling the Ground (Using Lift Arms in Float Position) (Foot Pedals)...4753
Leveling the Ground (Using Lift Arms in Float Position) (Hand Controls)...4753
Digging Into the Ground (Foot Pedals)...4754
Digging Into the Ground (Hand Controls)...4754
Backfilling (Foot Pedals)...4755
Backfilling (Hand Controls)...4755
PARKING THE BOBCAT LOADER...4756
TRANSPORTING THE BOBCAT LOADER...4757
TOWING THE LOADER...4758
LIFTING THE LOADER...4758
Single Point Lift...4758
Four Point Lift...4758
PREVENTIVE MAINTENANCE...4759
MAINTENANCE SAFETY...4763
SERVICE SCHEDULE...4765
Chart...4765
LIFT ARM SUPPORT DEVICE...4766
Engaging The Lift Arm Support Device...4766
Disengaging The Lift Arm Support Device...4767
HEATER...4767
Filter Cleaning and Maintenance...4767
OPERATOR CAB...4768
Raising The Operator Cab...4768
Lowering The Operator Cab...4769
Cab Door Sensor (If Equipped)...4770
Emergency Exit...4770
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4772
Inspecting the Seat Bar...4772
Maintaining the Seat Bar...4772
SEAT BAR RESTRAINT SYSTEM ADVANCED CONTROL SYSTEM (ACS) and ADVANCED HAND CONTROLS (AHC)...4773
Inspecting the Seat Bar...4773
Maintaining the Seat Bar...4773
BOBCAT INTERLOCK CONTROL SYSTEM (BICS)...4774
Inspecting The BICS Controller...4774
Inspecting Deactivation Of The Auxiliary Hydraulics System...4774
Inspecting The Seat Bar Sensor...4774
Inspecting The Traction Lock...4774
Inspecting The Lift Arm By-Pass Control...4774
Inspecting Deactivation Of Lift And Tilt Functions (AHC & ACS)...4775
REAR DOOR...4776
Opening And Closing The Rear Door...4776
Adjusting The Rear Door...4776
REAR GRILL...4777
AIR CLEANER SERVICE...4777
Replacing Filter Element...4777
FUEL SYSTEM...4779
Fuel Specifications...4779
Filling The Fuel Tank...4779
Fuel Filter...4779
Removing Air From The Fuel System...4780
ENGINE LUBRICATION SYSTEM...4781
Checking Engine Oil...4781
Oil Chart...4781
Replacing Oil And Filter...4781
ENGINE COOLING SYSTEM...4782
Cleaning The Cooling System...4782
Checking The Coolant Level...4783
Replacing The Coolant...4783
ALTERNATOR BELT...4784
Adjusting...4784
ELECTRICAL SYSTEM...4785
Description...4785
Cleaning Battery Terminals...4785
Fuse Location...4785
Using A Booster Battery (Jump Starting)...4786
Removing And Installing The Battery...4787
HYDRAULIC/HYDROSTATIC SYSTEM...4788
Checking And Adding Fluid...4788
Replacing Hydraulic/Hydrostatic Filter...4788
Replacing Hydraulic Fluid and Case Drain Filters...4789
Breather Cap...4790
SPARK ARRESTOR MUFFLER...4791
TIRE MAINTENANCE...4792
Wheel Nuts...4792
Rotating...4792
Mounting...4792
FINAL DRIVE TRANSMISSION (CHAINCASE)...4793
Checking And Adding Oil...4793
Removing Oil From The Chaincase...4793
FAN GEARBOX...4794
Checking And Maintaining...4794
DRIVE BELT...4795
Adjusting The Drive Belt...4795
Replacing The Drive Belt...4795
LUBRICATION OF THE BOBCAT LOADER...4796
PIVOT PINS...4797
BOB-TACH...4798
Inspection and Maintenance...4798
SYSTEM SETUP & ANALYSIS...4799
BICS SYSTEM...4801
Troubleshooting Guide...4801
DIAGNOSTICS SERVICE CODES...4802
Display...4802
Number Codes List...4803
DELUXE INSTRUMENT PANEL SETUP...4807
Deluxe Panel Upgrade...4807
Deluxe Panel Setup...4808
Passwords (Deluxe)...4808
Viewing Service Codes...4810
SHUTDOWN FEATURE...4811
SERVICE CLOCK RESET...4811
MACHINE SIGN TRANSLATIONS...4813
SERVICE SCHEDULE (6734534)...4815
WARNING (6728539)...4816
WARNING (6715944)...4817
WARNING (6710358)...4817
DANGER (6702301)...4818
WARNING (6579528)...4818
DANGER (6702302)...4818
WARNING (6717343)...4819
WARNING (6577754)...4819
IMPORTANT (6560573)...4819
LIFT ARM SUPPORT DEVICE (6706558)...4820
SPECIFICATIONS...4821
SKID STEER LOADER SPECIFICATIONS...4823
Dimensional Specifications:...4823
Performance Specifications:...4823
Engine:...4824
Loader Controls:...4824
Drive System:...4824
Hydraulic System...4824
Electrical System:...4824
Standard Instrumentation Panel...4824
Deluxe Instrumentation Panel (Option)...4824
Capacities:...4825
ADDITIONAL PUBLICATIONS AND TRAINING MATERIALS...4826
WARRANTY...4827
6900787 (9-00) - 753 Operation & Maintenance Manual...4829
OPERATOR SAFETY WARNINGS...4831
CONTENTS...4833
REFERENCE INFORMATION...4833
BOBCAT COMPANY IS ISO 9001 CERTIFIED...4834
REGULAR MAINTENANCE ITEMS...4834
FOREWORD...4835
SERIAL NUMBER LOCATIONS...4837
LOADER SERIAL NUMBER...4837
ENGINE SERIAL NUMBER...4837
DELIVERY REPORT...4837
BOBCAT LOADER IDENTIFICATION...4838
OPTIONS AND ACCESSORIES...4839
SAFETY...4841
SAFETY INSTRUCTIONS...4843
SAFETY IS THE OPERATOR’S RESPONSIBILITY...4843
BEFORE OPERATING THE BOBCAT LOADER...4844
SAFE OPERATION NEEDS A QUALIFIED OPERATOR *...4844
FIRE PREVENTION...4845
MACHINE SIGNS (DECALS)...4846
OPERATING INSTRUCTIONS...4849
INSTRUMENT PANEL...4851
Front Panel – Without BOSS®...4851
Front Panel – With BOSS® ...4852
BOSS Option Display Panel ...4853
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4854
Lift Arm By–Pass Control...4855
Traction Lock Override...4855
Auxiliary Hydraulic System...4855
ENGINE SPEED CONTROL...4856
PARKING BRAKE...4856
STEERING LEVERS...4857
STOPPING THE BOBCAT LOADER...4857
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4858
SEAT BAR RESTRAINT SYSTEM (MECHANICAL HAND CONTROLS)...4859
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...4860
HYDRAULIC CONTROLS...4861
Foot Pedals...4861
Lift Arm Operation...4861
Lift Arm Float Position...4861
Tilt Operation...4861
Bucket Position Valve Operation...4861
Hand Controls (Mechanical and Advanced Hand Controls)...4862
Lift Arm Operation...4862
Lift Arm Float Position...4862
Tilt Operation...4862
Bucket Position Valve Operation (If Equipped)...4862
Advanced Hand Controls (AHC) (If Equipped)...4862
Auxiliary Hydraulics (If Equipped)...4863
Quick Couplers...4863
Auxiliary Hydraulics Switch...4864
Front Auxiliary Hydraulics Operation...4864
Front Auxiliary Hydraulics Continuous Operation...4864
Rear Auxiliary Hydraulics Operation ...4864
Attachment Functions Control...4865
Relieving Hydraulic Pressure...4865
DAILY INSPECTION...4866
GETTING READY FOR OPERATION...4866
STARTING THE ENGINE...4868
Normal Starting (Without BOSS®)...4868
Cold Temperature Starting (Without BOSS®)...4869
Normal Starting (With BOSS®)...4870
Cold Temperature Starting (With BOSS®)...4871
Warming The Hydraulic/Hydrostatic System...4871
STOPPING THE ENGINE...4871
ATTACHMENTS AND BUCKETS...4872
Installing The Bucket Or Attachment...4873
Removing The Bucket Or Attachment ...4874
OPERATING PROCEDURE...4875
Filling The Bucket...4876
Emptying The Bucket...4876
Digging Into The Ground...4877
Leveling The Ground (Using Lift Arms In Float Position)...4877
Backfilling...4878
PARKING THE BOBCAT LOADER...4878
OPERATING PROCEDURE (HAND CONTROLS)...4879
Filling The Bucket...4879
Emptying The Bucket...4879
Digging Into The Ground...4880
Leveling The Ground (Using Lift Arms In FloatPosition)...4880
Backfilling...4881
PARKING THE BOBCAT LOADER...4881
TRANSPORTING THE BOBCAT LOADER...4882
TOWING THE LOADER...4882
LIFTING THE LOADER...4883
Four Point Lift...4883
Single Point Lift...4883
PREVENTIVE MAINTENANCE...4885
MAINTENANCE SAFETY...4887
SERVICE SCHEDULE...4889
LIFT ARM SUPPORT DEVICE...4890
Engaging The Lift Arm Support Device...4890
Disengaging The Lift Arm Support Device...4891
OPERATOR CAB...4892
Raising The Operator Cab...4892
Lowering The Operator Cab...4893
Emergency Exit...4894
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4895
Inspecting The Seat Bar...4895
Maintaining The Seat Bar...4895
SEAT BAR RESTRAINT SYSTEM (MECHANICAL HAND CONTROLS)...4896
Inspecting The Seat Bar...4896
Maintaining The Seat Bar...4896
SEAT BAR RESTRAINT SYSTEM (ADVANCED HANDCONTROLS)...4897
Inspecting The Seat Bar...4897
Maintaining The Seat Bar...4897
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4898
Inspecting The BICS™ Controller...4898
Inspecting Deactivation Of The Auxiliary Hydraulics System...4898
Inspecting The Seat Bar Sensor ...4898
Inspecting The Traction Lock...4898
Inspecting The Lift Arm By–Pass Control...4898
Additional Inspection For Loaders With Advanced Hand Controls...4898
REAR DOOR...4899
Latch Adjustment...4899
REAR GRILL...4899
AIR CLEANER SERVICE...4900
Replacing Filter Element...4900
FUEL SYSTEM...4902
Fuel Specifications...4902
Filling The Fuel Tank...4902
Fuel Filter...4902
Removing Air From The Fuel System...4903
ENGINE LUBRICATION SYSTEM...4904
Checking Engine Oil...4904
Oil Chart...4904
Replacing Oil And Filter...4904
ENGINE COOLING SYSTEM...4906
Cleaning The Cooling System...4906
Checking The Coolant Level...4906
Replacing The Coolant...4907
ALTERNATOR BELT...4908
Adjusting...4908
ELECTRICAL SYSTEM...4909
Description...4909
Cleaning Battery Terminals...4909
Fuse Location...4909
Using A Booster Battery (Jump Starting)...4910
Removing And Installing The Battery...4911
HYDRAULIC/HYDROSTATIC SYSTEM...4913
Checking And Adding Fluid...4913
Replacing Hydraulic/Hydrostatic Filter...4913
Replacing Hydraulic Fluid...4914
Breather Cap...4915
SPARK ARRESTOR MUFFLER...4916
TIRE MAINTENANCE...4917
Wheel Nuts...4917
Tire Rotation...4917
Tire Mounting...4917
FINAL DRIVE TRANSMISSION (CHAINCASE)...4918
Checking And Adding Oil...4918
Removing Oil From The Chaincase...4918
FAN GEARBOX...4919
Checking And Maintaining...4919
DRIVE BELT...4920
Adjusting The Drive Belt...4920
Replacing The Drive Belt...4921
LUBRICATION OF THE BOBCAT LOADER...4922
PIVOT PINS...4923
BOB–TACH...4924
Inspection and Maintenance...4924
SYSTEMS ANALYSIS...4925
SERVICE CODES (BOSS® Option)...4927
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4929
Troubleshooting Chart...4929
ADVANCED HAND CONTROLS (AHC)...4929
Troubleshooting Chart...4929
MACHINE SIGN TRANSLATIONS...4931
IMPORTANT - 6560573...4933
WARNING - 6579510...4934
WARNING - 6703725...4935
SERVICE SCHEDULE - 6715563...4936
WARNING - 6579528...4938
WARNING - 6577754...4938
DANGER - 6579639...4938
DANGER - 6579509...4938
DANGER - 6717343 ...4939
WARNING - 6715944...4939
SPECIFICATIONS...4941
PERFORMANCE...4943
CONTROLS...4943
ENGINE...4943
HYDRAULIC SYSTEM...4944
ELECTRICAL...4944
DRIVE SYSTEM...4944
CAPACITIES...4944
TIRES...4944
FLOOR PRESSURE...4944
BOBCAT COMPANY APPROVED ATTACHMENTS & ACCESSORIES...4945
ADDITIONAL PUBLICATIONS AND TRAINING MATERIALS...4947
WARRANTY...4949
6900438 (11-01) - 753 Operation & Maintenance Manual...4951
OPERATOR SAFETY WARNINGS...4953
CONTENTS...4955
REFERENCE INFORMATION...4955
BOBCAT COMPANY IS ISO 9001 CERTIFIED...4956
REGULAR MAINTENANCE ITEMS...4956
FOREWORD...4957
SERIAL NUMBER LOCATIONS...4959
LOADER SERIAL NUMBER...4959
ENGINE SERIAL NUMBER...4959
DELIVERY REPORT...4959
BOBCAT LOADER IDENTIFICATION...4960
OPTIONS AND ACCESSORIES...4961
SAFETY...4963
SAFETY INSTRUCTIONS FOR BOBCAT SKID–STEER LOADERS AND ATTACHMENTS...4965
SAFETY IS THE OPERATOR’S RESPONSIBILITY...4965
BEFORE OPERATING THE BOBCAT LOADER...4966
SAFE OPERATION NEEDS A QUALIFIED OPERATOR *...4966
FIRE PREVENTION...4967
MACHINE SIGNS (DECALS)...4968
OPERATING INSTRUCTIONS...4971
INSTRUMENT PANEL...4973
Front Panel – Without BOSS®...4973
Side Console*...4973
Front Panel – With BOSS®...4974
Side Console*...4974
BOSS Option Display Panel[A]...4975
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...4976
Lift Arm By–Pass Control...4977
Traction Lock Override...4977
Seat Sensor Override (If Equipped)...4977
Auxiliary Hydraulic System...4977
ENGINE SPEED CONTROL...4978
PARKING BRAKE...4978
STEERING LEVERS...4979
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...4980
SEAT BAR RESTRAINT SYSTEM (MACHANICAL HAND CONTROLS)...4981
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...4982
HYDRAULIC CONTROLS...4983
Foot Pedals...4983
Lift Arm Operation...4983
Lift Arm Float Position...4983
Tilt Operation...4983
Bucket Position Valve Operation...4983
Hand Controls (Mechanical and Advanced Hand Controls)...4984
Lift Arm Operation...4984
Lift Arm Float Position...4984
Tilt Operation...4984
Bucket Position Valve Operation (If Equipped)...4984
Auxiliary Hydraulics...4985
Quick Couplers (Flush Face)...4985
Auxiliary Hydraulics Switch...4986
Front Auxiliary Hydraulics Operation ...4986
Rear Auxiliary Hydraulics Operation ...4986
Secondary Front Auxiliary Hydraulics...4987
Attachment Functions Control...4988
Relieving Hydraulic Pressure...4988
DAILY INSPECTION...4989
Daily Inspection and Maintenance...4989
GETTING READY FOR OPERATION...4989
STARTING THE ENGINE...4991
Normal Starting (Without BOSS®)...4991
Cold Temperature Starting (Without BOSS®)...4992
Normal Starting (With BOSS®)...4993
Cold Temperature Starting (With BOSS®)...4994
Warming The Hydraulic/Hydrostatic System...4994
STOPPING THE ENGINE...4994
ATTACHMENTS AND BUCKETS...4995
Installing The Bucket Or Attachment...4996
Removing The Bucket Or Attachment...4997
OPERATING PROCEDURE...4998
Filling The Bucket...4999
Emptying The Bucket...4999
Digging Into The Ground...5000
Leveling The Ground (Using Lift Arms In Float Position)...5000
Backfilling...5001
PARKING THE BOBCAT LOADER...5001
OPERATING PROCEDURE (HAND CONTROLS)...5002
Filling The Bucket...5002
Emptying The Bucket...5002
Digging Into The Ground...5003
Leveling The Ground (Using Lift Arms In Float Position)...5003
Backfilling...5004
PARKING THE BOBCAT LOADER...5004
TRANSPORTING THE BOBCAT LOADER...5005
TOWING THE LOADER...5005
STOPPING THE BOBCAT LOADER...5005
LIFTING THE LOADER...5006
Four Point Lift...5006
Single Point Lift...5006
PREVENTIVE MAINTENANCE...5007
MAINTENANCE SAFETY...5009
SERVICE SCHEDULE...5011
LIFT ARM SUPPORT DEVICE...5012
Engaging The Lift Arm Support Device...5012
Disengaging The Lift Arm Support Device...5013
OPERATOR CAB...5014
Raising The Operator Cab...5014
Lowering The Operator Cab...5015
Emergency Exit...5016
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...5017
Inspecting The Seat Bar...5017
Maintaining The Seat Bar...5017
SEAT BAR RESTRAINT SYSTEM (HAND CONTROLS)...5018
Inspecting The Seat Bar...5018
Maintaining The Seat Bar...5018
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...5019
Inspecting The Seat Bar...5019
Maintaining The Seat Bar...5019
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...5020
Inspecting The BICS™ Controller ...5020
Inspecting Deactivation Of The Auxiliary HydraulicsSystem (Engine STOPPED – Key ON)...5020
Inspecting The Seat And Seat Bar Sensors (Engine RUNNING)...5020
Inspecting The Traction Lock (Engine RUNNING)...5020
Inspecting The Lift Arm By–Pass Control...5020
Inspecting the BICS™Lock Valve (Advanced Hand Control Only)...5021
Maintenance...5021
REAR DOOR...5022
Latch Adjustment...5022
REAR GRILL...5022
AIR CLEANER SERVICE...5023
Replacing Filter Element...5023
FUEL SYSTEM...5025
Fuel Specifications...5025
Filling The Fuel Tank...5025
Fuel Filter...5025
Removing Air From The Fuel System...5026
ENGINE LUBRICATION SYSTEM...5027
Checking Engine Oil...5027
Oil Chart...5027
Replacing Oil And Filter...5027
ENGINE COOLING SYSTEM...5029
Cleaning The Cooling System...5029
Checking The Coolant Level...5029
Replacing The Coolant...5030
ALTERNATOR BELT...5031
Adjusting...5031
ELECTRICAL SYSTEM...5032
Description...5032
Cleaning Battery Terminals...5032
Fuse Location...5032
Using A Booster Battery (Jump Starting)...5033
Removing And Installing The Battery...5034
HYDRAULIC/HYDROSTATIC SYSTEM...5036
Checking And Adding Fluid...5036
Replacing Hydraulic/Hydrostatic Filter...5036
Replacing Hydraulic Fluid...5037
Breather Cap...5038
SPARK ARRESTOR MUFFLER...5039
TIRE MAINTENANCE...5040
Wheel Nuts...5040
Tire Rotation...5040
Tire Mounting...5040
FINAL DRIVE TRANSMISSION (CHAINCASE)...5041
Checking And Adding Oil...5041
FAN GEARBOX...5042
Checking And Maintaining...5042
DRIVE BELT...5043
Adjusting The Drive Belt...5043
Replacing The Drive Belt...5044
LUBRICATION OF THE BOBCAT LOADER...5045
PIVOT PINS...5046
BOB–TACH...5047
Inspection And Maintenance...5047
SYSTEMS ANALYSIS...5049
MONITOR SERVICE CODES...5051
SERVICE CODES...5052
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...5054
Troubleshooting Chart...5054
ADVANCED HAND CONTROLS (AHC)...5054
Troubleshooting Chart...5054
MACHINE SIGN TRANSLATIONS...5055
IMPORTANT - 6560573...5057
WARNING - 6579511...5058
WARNING - 6579510...5059
WARNING - 6703725...5060
SERVICE SCHEDULE - 6708212...5061
WARNING - 6579528...5063
WARNING - 6577754...5063
DANGER - 6579639...5063
DANGER - 6579509...5063
SPECIFICATIONS...5065
LOADER SPECIFICATIONS...5067
PERFORMANCE...5067
CONTROLS...5067
ENGINE...5067
HYDRAULIC SYSTEM...5068
ELECTRICAL...5068
DRIVE SYSTEM...5068
CAPACITIES...5068
TIRES...5068
FLOOR PRESSURE...5068
BOBCAT COMPANY APPROVED ATTACHMENTS & ACCESSORIES...5069
ADDITIONAL PUBLICATIONS...5072
WARRANTY...5073
6900374 (6-00) - 753; 753H (Foot Pedal & Hand Controls) Operation & Maintenance Manual...5075
OPERATOR SAFETY WARNINGS...5077
CONTENTS...5079
REFERENCE INFORMATION...5079
BOBCAT COMPANY IS ISO 9001 CERTIFIED...5080
REGULAR MAINTENANCE ITEMS...5080
FOREWORD...5081
SERIAL NUMBER LOCATIONS...5083
LOADER SERIAL NUMBER...5083
ENGINE SERIAL NUMBER...5083
DELIVERY REPORT...5083
BOBCAT LOADER IDENTIFICATION...5084
OPTIONS AND ACCESSORIES...5085
SAFETY...5087
SAFETY INSTRUCTIONS...5089
SAFETY IS THE OPERATOR’S RESPONSIBILITY...5089
BEFORE OPERATING THE BOBCAT LOADER...5090
SAFE OPERATION NEEDS A QUALIFIED OPERATOR *...5090
FIRE PREVENTION...5091
MACHINE SIGNS (DECALS)...5092
OPERATING INSTRUCTIONS...5095
INSTRUMENT PANEL...5097
Without BOSS® (Early Models)...5097
With BOSS® (Early Models)...5098
Without BOSS® (Later Models)...5099
With BOSS® (Later Models)...5100
BOSS Option Display Panel...5101
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...5102
ENGINE SPEED CONTROL...5104
Lift Arm By–Pass Control...5103
Traction Lock Override...5103
Seat Sensor Override (If Equipped)...5103
Auxiliary Hydraulic System...5103
PARKING BRAKE...5104
STEERING LEVERS...5105
STOPPING THE BOBCAT LOADER...5105
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...5106
SEAT BAR RESTRAINT SYSTEM (HAND CONTROLS)...5107
HYDRAULIC CONTROLS...5108
Foot Pedals...5108
Lift Arm Operation...5108
Lift Arm Float Position...5108
Tilt Operation...5108
Bucket Position Valve Operation (If Equipped)...5108
Hand Controls...5109
Lift Arm Operation...5109
Lift Arm Float Position...5109
Tilt Operation...5109
Bucket Position Valve Operation (If Equipped)...5109
Auxiliary Hydraulics (If Equipped)...5110
Quick Couplers (Flush Face)...5110
Auxiliary Hydraulics Switch...5111
Front Auxiliary Hydraulics Operation...5111
Front Auxiliary Hydraulics Continuous Operation...5111
Rear Auxiliary Hydraulics Operation...5111
High Horsepower Hydraulics (Option) Operation...5112
Secondary Front Auxiliary Hydraulics...5112
Attachment Functions Control...5113
Relieving Hydraulic Pressure...5113
DAILY INSPECTION...5114
GETTING READY FOR OPERATION...5114
STARTING THE ENGINE...5116
Normal Starting (Without BOSS® Option)...5116
Normal Starting (With BOSS® Option)...5118
Cold Temperature Starting (With BOSS®)...5119
Warming the Hydraulic/Hydrostatic System...5119
STOPPING THE ENGINE...5119
ATTACHMENTS AND BUCKETS...5120
Installing The Bucket Or Attachment...5121
Removing The Bucket Or Attachment ...5122
OPERATING PROCEDURE...5123
OPERATING PROCEDURES (FOOT PEDALS) ...5124
Filling The Bucket...5124
Emptying The Bucket...5124
Digging Into The Ground...5125
Leveling The Ground (Using Lift Arms In Float Position)...5125
Backfilling...5126
PARKING THE BOBCAT LOADER...5126
OPERATING PROCEDURES (HAND CONTROLS)...5127
Filling The Bucket...5127
Emptying The Bucket...5127
Digging Into The Ground...5128
Leveling The Ground (Using Lift Arms In FloatPosition)...5128
Backfilling...5129
PARKING THE BOBCAT LOADER...5129
TRANSPORTING THE BOBCAT LOADER...5130
TOWING THE LOADER...5130
STOPPING THE BOBCAT LOADER...5130
LIFTING THE LOADER...5131
Four Point Lift...5131
Single Point Lift...5131
PREVENTIVE MAINTENANCE...5133
MAINTENANCE SAFETY...5135
SERVICE SCHEDULE...5137
LIFT ARM SUPPORT DEVICE...5138
Engaging The Lift Arm Support Device...5138
Disengaging The Lift Arm Support Device...5139
OPERATOR CAB...5140
Raising The Operator Cab...5140
Lowering The Operator Cab...5141
Emergency Exit...5142
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...5143
Inspecting The Seat Bar...5143
Maintaining The Seat Bar...5143
SEAT BAR RESTRAINT SYSTEM (HAND CONTROLS)...5144
Inspecting The Seat Bar...5144
Maintaining The Seat Bar...5144
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...5145
Inspecting The BICS™ Controller ...5145
Inspecting The Seat And Seat Bar Sensors ...5145
Inspecting The Traction Lock ...5145
Inspecting The Lift Arm By–Pass Control...5145
Maintenance...5146
REAR DOOR...5147
Latch Adjustment...5147
REAR GRILL...5147
AIR CLEANER SERVICE...5148
Replacing Filter Element...5148
FUEL SYSTEM...5150
Fuel Specifications...5150
Filling The Fuel Tank...5150
Fuel Filter...5150
Removing Air From The Fuel System...5151
ENGINE LUBRICATION SYSTEM...5152
Checking Engine Oil...5152
Oil Chart...5152
Replacing Oil And Filter...5152
ENGINE COOLING SYSTEM...5154
Cleaning The Cooling System...5154
Checking The Coolant Level...5154
Replacing The Coolant...5155
ALTERNATOR BELT...5156
Adjusting...5156
ELECTRICAL SYSTEM...5157
Description...5157
Cleaning Battery Terminals...5157
Fuse Location...5157
Using A Booster Battery (Jump Starting)...5158
Removing And Installing The Battery...5159
HYDRAULIC/HYDROSTATIC SYSTEM...5161
Checking And Adding Fluid...5161
Replacing Hydraulic/Hydrostatic Filter...5161
Replacing Hydraulic Fluid...5162
Breather Cap...5163
SPARK ARRESTOR MUFFLER...5164
TIRE MAINTENANCE...5165
Wheel Nuts...5165
Tire Rotation...5165
Tire Mounting...5165
FINAL DRIVE TRANSMISSION (CHAINCASE)...5166
Checking And Adding Oil...5166
Removing Oil From The Chaincase...5166
FAN GEARBOX...5167
Checking And Maintaining...5167
DRIVE BELT (Spring Loaded Idler)...5168
Adjusting The Drive Belt...5168
Replacing The Drive Belt...5169
DRIVE BELT (Fixed Mount Idler)...5170
Adjusting The Drive Belt...5170
Replacing The Drive Belt...5171
LUBRICATION OF THE BOBCAT LOADER...5172
PIVOT PINS...5173
BOB–TACH...5174
Inspection and Maintenance...5174
SYSTEMS ANALYSIS...5175
MONITOR SERVICE CODES...5177
SERVICE CODES...5178
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...5180
Troubleshooting Chart...5180
ADVANCED HAND CONTROLS (AHC)...5180
Troubleshooting Chart...5180
MACHINE SIGN TRANSLATIONS...5181
IMPORTANT - 6560573...5183
WARNING - 6579511...5184
WARNING - 6579510...5185
WARNING - 6703725...5186
SERVICE SCHEDULE - 6708212...5187
WARNING - 6579528...5189
WARNING - 6577754...5189
DANGER - 6579639...5189
DANGER - 6579509...5189
SPECIFICATIONS...5191
PERFORMANCE...5193
CONTROLS...5193
ENGINE...5194
HYDRAULIC SYSTEM...5194
ELECTRICAL...5194
DRIVE SYSTEM...5194
CAPACITIES...5195
TIRES...5195
FLOOR PRESSURE...5195
BOBCAT COMPANY APPROVED ATTACHMENTS & ACCESSORIES...5196
ADDITIONAL PUBLICATIONS AND TRAINING MATERIALS...5199
WARRANTY...5201
6722925 (7-00) - 753L Operation & Maintenance Manual...5203
OPERATOR SAFETY WARNINGS...5204
CONTENTS...5205
REFERENCE INFORMATION...5205
FOREWORD...5207
SERIAL NUMBER LOCATIONS...5209
LOADER SERIAL NUMBER...5209
ENGINE SERIAL NUMBER...5209
DELIVERY REPORT...5209
BOBCAT LOADER IDENTIFICATION...5210
OPTIONS AND ACCESSORIES...5211
SAFETY...5213
SAFETY INSTRUCTIONS...5215
SAFETY IS THE OPERATOR’S RESPONSIBILITY...5215
BEFORE OPERATING THE BOBCAT LOADER...5216
SAFE OPERATION NEEDS A QUALIFIED OPERATOR *...5216
FIRE PREVENTION...5217
MACHINE SIGNS (DECALS)...5218
OPERATING INSTRUCTIONS...5221
INSTRUMENT PANEL...5223
Standard...5223
INSTRUMENT PANEL (Optional BOSS®)...5224
ENGINE SPEED CONTROL...5225
PARKING BRAKE...5225
STEERING LEVERS...5226
HYDRAULIC CONTROLS...5227
Foot Pedals...5227
Lift Arm Operation...5227
Tilt Operation...5227
Bucket Position Valve Operation...5227
Auxiliary Hydraulics Operation (Standard)...5228
Auxiliary Hydraulics Operation (Optional BOSS)...5229
DAILY INSPECTION ...5230
SEAT BAR RESTRAINT SYSTEM...5231
GETTING READY FOR OPERATION...5232
STARTING THE ENGINE...5233
Normal Starting Condition (Standard)...5234
Cold Temperature Starting Condition (Standard)...5235
Warming The Hydraulic/Hydrostatic System...5235
Normal Starting Condition (Optional)...5236
Cold Temperature Starting Condition (Optional)...5237
STOPPING THE ENGINE...5238
ATTACHMENT AND BUCKETS...5239
Installing The Bucket Or Attachment...5240
Removing The Bucket Or Attachment ...5241
OPERATING PROCEDURE...5242
Filling the Bucket...5243
Emptying the Bucket...5243
Digging Into the Ground...5244
Leveling the Ground (Using Lift Arms in Float Position)...5244
Backfilling...5245
PARKING THE BOBCAT LOADER...5245
TRANSPORTING THE BOBCAT LOADER...5246
LIFTING THE LOADER...5247
Four Point Lift...5247
Single Point Lift...5247
TOWING THE LOADER...5247
PREVENTIVE MAINTENANCE...5249
MAINTENANCE SAFETY...5250
SERVICE SCHEDULE...5251
LIFT ARM SUPPORT DEVICE...5252
Engaging The Lift Arm Support Device...5252
Disengaging The Lift Arm Support Device...5252
OPERATOR CAB...5253
Raising The Operator Cab...5253
Lowering The Operator Cab...5254
Emergency Exit...5254
SEAT BAR RESTRAINT SYSTEM...5255
Seat Bar Inspection...5255
Seat Bar Maintenance...5255
REAR DOOR...5256
Adjustment...5256
REAR GRILL...5256
AIR CLEANER SERVICE...5257
FUEL SYSTEM...5259
Fuel Specifications...5259
Filling The Fuel Tank...5259
Fuel Filter...5259
Removing Air From The Fuel System...5260
ENGINE LUBRICATION SYSTEM...5261
Checking Engine Oil...5261
Oil Chart...5261
Replacement Of Oil And Filter...5261
COOLING SYSTEM...5263
Cleaning The Cooling System...5263
Checking The Coolant Level...5263
Removing Coolant From The Cooling System...5264
ALTERNATOR BELT...5265
Adjusting The Alternator Belt...5265
ELECTRICAL SYSTEM...5266
Description...5266
Servicing The Electrical System...5266
Fuse Location – 753L (Option)...5266
Fuse Location – 753L (Standard)...5266
Using A Booster Battery (Jump Starting) ...5267
Battery Removal And Installation...5267
HYDRAULIC/HYDROSTATIC SYSTEM...5269
Checking And Adding Fluid...5269
Hydraulic/Hydrostatic Filter Replacement...5269
Hydraulic Fluid Replacement...5270
Hydraulic Reservoir Breather Cap...5271
SPARK ARRESTOR MUFFLER...5272
TIRE MAINTENANCE...5273
Wheel Nuts...5273
Tire Rotation...5273
Tire Mounting...5273
FINAL DRIVE TRANSMISSION (CHAINCASE)...5274
Checking And Adding Oil...5274
Removing Oil From The Chaincase...5274
FAN GEARBOX...5274
DRIVE BELT...5275
Adjustment...5275
Drive Belt Replacement...5276
LUBRICATION OF THE BOBCAT LOADER...5277
PIVOT PINS...5278
BOB–TACH...5279
Inspection and Maintenance...5279
SYSTEMS ANALYSIS...5281
SERVICE CODES...5283
MACHINE SIGN TRANSLATIONS...5285
IMPORTANT - 6560573...5287
WARNING - 6579511...5288
SERVICE SCHEDULE - 6578218...5289
WARNING - 6579510...5291
WARNING - 6579528...5292
WARNING - 6577754...5292
DANGER - 6579639...5292
DANGER - 6579509...5292
SPECIFICATIONS...5293
LOADER DIMENSIONS...5295
OPERATIONS & PERFORMANCE...5295
ENGINE...5295
HYDRAULIC SYSTEM...5296
ELECTRICAL...5296
DRIVE SYSTEM...5296
CAPACITIES...5296
TIRES...5296
ATTACHMENT & ACCESSORIES...5297
ADDITIONAL PUBLICATIONS...5299
WARRANTY...5301
6722905 (11-01) - 753; 753H Operation & Maintenance Manual...5303
OPERATOR SAFETY WARNINGS...5305
CONTENTS...5307
REFERENCE INFORMATION...5307
BOBCAT COMPANY IS ISO 9001 CERTIFIED...5308
REGULAR MAINTENANCE ITEMS...5308
FOREWORD...5309
SERIAL NUMBER LOCATIONS...5311
LOADER SERIAL NUMBER...5311
ENGINE SERIAL NUMBER...5311
DELIVERY REPORT...5311
BOBCAT LOADER IDENTIFICATION...5312
OPTIONS AND ACCESSORIES...5313
SAFETY...5315
SAFETY INSTRUCTIONS...5317
SAFETY IS THE OPERATOR’S RESPONSIBILITY...5317
BEFORE OPERATING THE BOBCAT LOADER...5318
SAFE OPERATION NEEDS A QUALIFIED OPERATOR *...5318
FIRE PREVENTION...5319
MACHINE SIGNS (DECALS)...5320
OPERATING INSTRUCTIONS...5323
INSTRUMENT PANEL...5325
ENGINE SPEED CONTROL...5327
PARKING BRAKE...5327
STEERING LEVERS...5328
HYDRAULIC CONTROLS...5329
Foot Pedals...5329
Lift Arm Operation...5329
Tilt Operation (Bucket)...5329
Bucket Position Valve Operation (Optional)...5329
Auxiliary Hydraulics Operation (Optional)...5330
Auxiliary Hydraulics Operation – 753H (Optional)...5332
DAILY INSPECTION ...5334
SEAT BAR RESTRAINT SYSTEM...5335
GETTING READY FOR OPERATION...5336
STARTING THE ENGINE...5338
Normal Starting Condition (Standard)...5338
Cold Temperature Starting Condition – (Standard)...5339
Warning The Hydraulic/Hydrostatic System...5339
Normal Starting Condition (Optional)...5340
Cold Temperature Starting Condition (Optional)...5341
STOPPING THE ENGINE...5342
ATTACHMENT AND BUCKETS...5343
Installation And Removal...5344
OPERATING PROCEDURE...5345
Filling The Bucket...5346
Emptying The Bucket...5346
Digging Into The Ground...5347
Leveling The Ground (Using Lift Arms In Float Position)...5347
Backfilling...5348
PARKING THE BOBCAT LOADER...5348
TRANSPORTING THE BOBCAT LOADER...5349
LIFTING THE LOADER...5350
Four Point Lift...5350
Single Point Lift...5350
TOWING THE LOADER...5350
PREVENTIVE MAINTENANCE...5351
MAINTENANCE SAFETY...5352
SERVICE SCHEDULE...5353
LIFT ARM SUPPORT DEVICE...5354
To Engage Lift Arm Support Device...5354
To Disengage Lift Arm Support Device...5354
OPERATOR CAB...5355
Raising The Operator Cab...5355
Lowering The Operator Cab...5355
Emergency Exit...5355
SEAT BAR RESTRAINT SYSTEM...5356
Seat Bar Inspection...5356
Seat Bar Maintenance...5356
REAR DOOR...5357
Adjustment...5357
REAR GRILL...5357
AIR CLEANER SERVICE...5358
FUEL SYSTEM...5360
Fuel Specifications...5360
Filling The Fuel Tank...5360
Fuel Filter...5360
Removing Air From The Fuel System...5361
ENGINE LUBRICATION SYSTEM...5362
Check Engine Oil...5362
Replacement Of Oil And Filter...5362
COOLING SYSTEM...5364
Cleaning The Cooling System...5364
Checking The Coolant Level...5364
Removing Coolant From The Cooling System...5365
ALTERNATOR BELT...5366
Adjusting The Alternator Belt...5366
ELECTRICAL SYSTEM...5367
Description...5367
Electrical System Service...5367
Fuses Location– 753 (Option) & (753H) (Option)...5367
Fuses – 753 (Standard)...5367
Using A Booster Battery (Jump Starting)...5368
Battery Removal And Installation...5368
HYDRAULIC/HYDROSTATIC SYSTEM...5370
Checking And Adding Fluid...5370
Hydraulic/Hydrostatic Filter Replacement...5370
Hydraulic Fluid Replacement...5371
Hydraulic Reservoir Breather Cap...5372
SPARK ARRESTOR MUFFLER...5373
TIRE MAINTENANCE...5374
Wheel Nuts...5374
Tire Rotation...5374
Tire Mounting...5374
FINAL DRIVE TRANSMISSION (CHAINCASE)...5375
Checking And Adding Oil...5375
FAN GEARBOX...5375
DRIVE BELT...5376
Adjustment...5376
Drive Belt Replacement...5377
LUBRICATION OF THE BOBCAT LOADER...5378
PIVOT PINS...5379
BOB–TACH...5380
PARKING BRAKE PEDAL...5380
Adjustment...5380
SYSTEMS ANALYSIS...5381
SERVICE CODES...5383
MACHINE SIGNS TRANSLATIONS...5385
IMPORTANT - 6560573...5387
WARNING - 6579511...5388
SERVICE SCHEDULE - 6578218...5389
WARNING - 6579510...5391
WARNING - 6579528...5392
WARNING - 6577754...5392
DANGER - 6579639...5392
DANGER -6579509 ...5392
SPECIFICATIONS...5393
LOADER DIMENSIONS...5395
OPERATIONS & PERFORMANCE...5395
ENGINE...5395
HYDRAULIC SYSTEM...5396
ELECTRICAL...5396
DRIVE SYSTEM...5396
CAPACITIES...5396
TIRES...5396
BOBCAT COMPANY APPROVED ATTACHMENTS & ACCESSORIES...5397
ADDITIONAL PUBLICATIONS...5400
WARRANTY...5401
6722761 (11-98) - 753; 753H Operation & Maintenance Manual...5403
OPERATOR SAFETY WARNINGS...5405
CONTENTS...5407
REFERENCE INFORMATION...5407
FOREWORD...5409
SERIAL NUMBER LOCATIONS...5411
LOADER SERIAL NUMBER...5411
ENGINE SERIAL NUMBER...5411
DELIVERY REPORT...5411
BOBCAT LOADER IDENTIFICATION...5412
OPTIONS AND ACCESSORIES...5414
SAFETY...5415
SAFETY INSTRUCTIONS...5417
SAFETY IS THE OPERATOR’S RESPONSIBILITY...5417
BEFORE OPERATING THE BOBCAT LOADER...5418
SAFE OPERATION NEEDS A QUALIFIED OPERATOR*...5418
FIRE PREVENTION...5419
MACHINE SIGNS (DECALS)...5420
OPERATING INSTRUCTIONS...5423
MONITOR SERVICE CODES...5424
INSTRUMENT PANEL...5425
ENGINE SPEED CONTROL...5427
PARKING BRAKE...5427
STEERING LEVERS...5428
HYDRAULIC CONTROLS...5429
Foot Pedals...5429
Lift Arm Operation...5429
Tilt Operation (Bucket)...5429
Bucket Position Valve Operation (Optional)...5429
Auxiliary Hydraulics Operation (Optional BOSS)...5430
Auxiliary Hydraulics Operation – 753H Plus (5110)...5431
DAILY INSPECTION ...5433
SEAT BAR RESTRAINT SYSTEM...5434
GETTING READY FOR OPERATION...5435
STARTING THE ENGINE...5437
Normal Starting Condition – 753 Plus (5115), 753HPlus (5110)...5437
Cold Temperature Starting Condition 753 Plus (5115), 753H Plus (5110)...5438
Warming The Hydraulic/Hydrostatic System...5439
STOPPING THE ENGINE...5439
Normal Starting Condition – 753 Base (5113)...5440
Cold Temperature Starting Condition – 753 Base (5113)...5441
ATTACHMENT AND BUCKETS...5442
Installation And Removal...5443
OPERATING PROCEDURE...5444
Filling The Bucket...5445
Emptying The Bucket...5445
Digging Into The Ground...5446
Leveling The Ground (Using Lift Arms In Float Position)...5446
Backfilling...5447
PARKING THE BOBCAT LOADER...5447
TRANSPORTING THE BOBCAT LOADER...5448
LIFTING THE LOADER...5449
Four Point Lift...5449
Single Point Lift...5449
TOWING THE LOADER...5449
PREVENTIVE MAINTENANCE...5451
MAINTENANCE SAFETY...5453
SERVICE SCHEDULE...5455
LIFT ARM SUPPORT DEVICE...5456
To Engage Lift Arm Support Device...5456
To Disengage Lift Arm Support Device...5456
OPERATOR CAB...5457
Raising The Operator Cab...5457
Lowering The Operator Cab...5457
Emergency Exit...5457
SEAT BAR RESTRAINT SYSTEM...5458
Seat Bar Inspection...5458
Seat Bar Maintenance...5458
REAR DOOR...5459
Adjustment...5459
REAR GRILL...5459
AIR CLEANER SERVICE – 753 Plus (5115) & 753H Plus (5110)...5460
AIR CLEANER SERVICE – 753 Base (5113)...5461
FUEL SYSTEM...5462
Fuel Specifications...5462
Filling The Fuel Tank...5462
Fuel Filter...5462
Removing Air From The Fuel System...5463
ENGINE LUBRICATION SYSTEM...5464
Check Engine Oil...5464
Replacement Of Oil And Filter...5464
COOLING SYSTEM...5466
Cleaning The Cooling System...5466
Checking The Coolant Level...5466
Removing Coolant From The Cooling System...5467
ALTERNATOR BELT...5468
Adjusting The Alternator Belt...5468
ELECTRICAL SYSTEM...5469
Description...5469
Electrical System Service...5469
Fuses – 753 Plus (5115) & 753H Plus (5110)...5469
Fuses – 753 Base (5113)...5469
Using A Booster Battery (Jump Starting)...5470
Battery Removal And Installation...5470
HYDRAULIC/HYDROSTATIC SYSTEM...5472
Checking And Adding Fluid...5472
Hydraulic/Hydrostatic Filter Replacement...5472
Hydraulic Fluid Replacement...5473
Hydraulic Reservoir Breather Cap...5474
SPARK ARRESTOR MUFFLER...5475
TIRE MAINTENANCE...5476
Wheel Nuts...5476
Tire Rotation...5476
Tire Mounting...5476
FINAL DRIVE TRANSMISSION (CHAINCASE)...5477
Checking And Adding Oil...5477
FAN GEARBOX...5477
DRIVE BELT...5478
Adjustment...5478
Drive Belt Replacement...5479
LUBRICATION OF THE BOBCAT LOADER...5480
PIVOT PINS...5481
BOB–TACH...5482
PARKING BRAKE PEDAL...5482
Adjustment...5482
SYSTEMS ANALYSIS...5483
MONITOR SERVICE CODES...5484
SERVICE CODES...5485
MACHINE SIGN TRANSLATIONS...5487
IMPORTANT - 6560573...5489
WARNING - 6579511...5490
WARNING - 6579510...5491
SERVICE SCHEDULE - 6708212...5492
WARNING - 6579528...5494
WARNING - 6577754...5494
DANGER - 6579639...5494
DANGER - 6579509...5494
SPECIFICATIONS...5495
753 BASE (5113) & 753 (5115)...5497
LOADER DIMENSIONS...5497
OPERATIONS & PERFORMANCE...5497
ENGINE...5497
HYDRAULIC SYSTEM...5498
ELECTRICAL...5498
DRIVE SYSTEM...5498
CAPACITIES...5498
TIRES...5498
753H PLUS (5110)...5499
LOADER DIMENSIONS...5499
OPERATIONS & PERFORMANCE...5499
ENGINE...5499
HYDRAULIC SYSTEM...5500
ELECTRICAL...5500
DRIVE SYSTEM...5500
CAPACITIES...5500
TIRES...5500
MELROE COMPANY APPROVED ATTACHMENTS & ACCESSORIES...5501
ADDITIONAL PUBLICATIONS...5504
WARRANTY...5505
6722443 (3-93) - 753; 753H Operation & Maintenance Manual...5507
OPERATOR SAFETY WARNINGS...5508
CONTENTS...5509
REFERENCE INFORMATION...5509
FOREWORD...5511
SERIAL NUMBER LOCATIONS...5513
DELIVERY REPORT...5513
BOBCAT LOADER IDENTIFICATION...5514
753 SERIES EQUIPMENT...5516
SAFETY...5517
SAFETY INSTRUCTIONS...5519
FIRE PREVENTION...5521
MACHINE SIGNS (DECALS)...5522
OPERATING INSTRUCTIONS...5525
MONITOR SERVICE CODES...5526
INSTRUMENT PANEL...5527
ENGIE SPEED CONTROL...5529
PARKING BRAKE...5529
STEERING LEVERS...5530
HYDRAULIC CONTROLS...5531
Foot Pedals...5531
Lift Arm Operation...5531
Tilt Operation (Bucket)...5531
Bucket Position Valve Operation...5531
Auxiliary Hydraulics Operation...5532
DAILY INSPECTION...5535
SEAT BAR RESTRAINT SYSTEM...5536
GETTING READY FOR OPERATION...5537
STARTING THE ENGINE...5539
Normal Starting Condition - 753 Plus, 753H Plus...5539
Cold Temperature Starting Condition - 753 Plus, 753H Plus...5540
Warming The Hydraulic/Hydrostatic System...5541
STOPPING THE ENGINE...5541
Normal Starting Condition - 753 Base...5542
Cold Temperature Starting Condition - 753 Base...5543
ATTACHMENTS AND BUCKETS...5544
Installation & Removal...5545
OPERATING PROCEDURE...5546
Filling The Bucket...5547
Emptying The Bucket...5547
Digging Into The Ground...5548
Leveling The Ground (Using Lift Arms In Float Position)...5548
Backfilling...5549
PARKING THE BOBCAT LOADER...5549
TRANSPORTING THE BOBCAT LOADER...5550
LIFTING THE LOADER...5551
Four Point Lift...5551
Single Point Lift...5551
PREVENTIVE MAINTENANCE...5553
SERVICE SCHEDULE...5555
LIFT ARM SUPPORT DEVICE...5556
To Engage Lift Arm Support Device...5556
To Disengage Lift Arm Support Device...5556
OPERATOR CAB...5557
Raising The Operator Cab...5557
Lowering The Operator Cab...5557
Emergency Exit...5557
SEAT BAR RESTRAINT SYSTEM...5558
Seat Bar Inspection...5558
Seat Bar Maintenance...5558
REAR DOOR...5559
Adjustment...5559
REAR GRILL...5559
AIR CLEANER SERVICE - 753 PLUS, 753H PLUS...5560
AIR CLEANER SERVICE - 753 BASE...5561
FUEL SYSTEM...5562
Fuel Specifications...5562
Filling The Fuel Tank...5562
Fuel Filter...5562
Removing Air From The Fuel System...5563
ENGINE LUBRICATION SYSTEM...5564
Check Engine Oil...5564
Replacement Of Oil And Filter...5564
COOLING SYSTEM...5566
Cleaning The Cooling System...5566
Checking The Coolant Level...5566
Removing Coolant From The Cooling System...5567
ALTERNATOR BELT...5568
Adjusting The Alternator Belt...5568
ELECTRICAL SYSTEM...5569
Description...5569
Electrical System Service...5569
Using A Booster Battery (Jump Starting)...5570
Battery Removal And Installation...5570
HYDRAULIC/HYDROSTATIC SYSTEM...5572
Checking And Adding Fluid...5572
Hydraulic/Hydrostatic Filter Replacement...5572
Hydraulic Fluid Replacment...5573
Hydraulic Reservoir Breather Cap...5574
SPARK ARRESTOR MUFFLER...5575
TIRE MAINTENANCE...5576
Wheel Nuts...5576
Tire Rotation...5576
Tire Mounting...5576
FINAL DRIVE TRANSMISSION (CHAINCASE)...5577
Checking And Adding Oil...5577
FAN GEARBOX...5577
DRIVE BELT...5578
Adjustment...5578
Drive Belt Replacement...5579
LUBRICATION OF THE BOBCAT LOADER...5580
PIVOT PINS...5581
BOB-TACH...5582
PARKING BRAKE PEDAL...5582
Adjustment...5582
SERVICE CODES...5583
MONITOR SERVICE CODES...5584
MACHINE SIGNS TRANSLATIONS...5587
IMPORTANT - 6560573...5589
WARNING - 6579511...5590
SERVICE SCHEDULE - 6578218...5591
WARNING - 6579510...5593
WARNING - 6579528...5594
WARNING - 6577754...5594
DANGER - 6702302...5594
DANGER - 6702301 ...5594
SPECIFICATIONS...5595
753 BASE (5113) & 753 PLUS (5115)...5597
LOADER DIMENSIONS...5597
OPERATION & PERFORMANCE...5597
ENGINE...5597
HYDRAULIC SYSTEM...5598
ELECTRICAL...5598
DRIVE SYSTEM...5598
CAPACITIES...5598
TIRES...5598
753H PLUS (5110)...5599
LOADER DIMEMSIONS...5599
OPERATION & PERFORMANCE...5599
ENGINE...5599
HYDRAULIC SYSTEM...5600
ELECTRICAL...5600
DRIVE SYSTEM...5600
CAPACITIES...5600
TIRES...5600
ATTACHMENTS & ACCESSORIES...5601
ADDITIONAL PUBLICATIONS...5604
WARRANTY...5605
6720583 (10-92) - 753; 753H Operation & Maintenance Manual...5607
OPERATOR SAFETY WARNINGS...5608
CONTENTS...5609
FOREWORD...5611
SERIAL NUMBER LOCATIONS...5613
DELIVERY REPORT...5613
BOBCAT LOADER IDENTIFICATION...5614
SAFETY...5615
SAFETY INSTRUCTIONS...5617
FIRE PREVENTION...5619
SAFETY SIGNS (DECALS)...5620
OPERATING INSTRUCTIONS...5623
MONITOR SERVICE CODES...5624
INSTRUMENT PANEL...5625
THROTTLE CONTROL...5626
PARKING BRAKE...5626
STEERING LEVERS...5627
HYDRAULIC CONTROLS...5628
Foot Pedals...5628
Lift Arm Operation...5628
Tilt Operation (Bucket)...5628
Auxiliary Hydraulics Operation...5629
DAILY INSPECTION...5630
SEAT BAR RESTRIANT SYSTEM...5631
GETTING READY FOR OPERATION...5632
STARTING THE ENGINE...5634
Normal Starting Condition...5634
Cold Temperature Starting Condition...5635
Warming The Hydraulic/Hydrostatic System...5636
STOPPING THE ENGINE...5636
ATTACHMENTS AND BUCKETS...5637
Installation And Removal...5638
OPERATING PROCEDURE...5639
Filling The Bucket...5640
Emptying The Bucket...5640
Digging Into The Ground...5641
Leveling The Ground (Using Lift Arms In Float Position)...5641
Backfilling...5642
PARKING THE BOBCAT LOADER...5642
TRANSPORTING THE BOBCAT LOADER...5643
LIFTING THE LOADER...5643
PREVENTIVE MAINTENANCE...5645
MAINTENANCE SAFETY...5646
SERVICE SCHEDULE...5647
LIFT ARM SUPPORT DEVICE...5648
To Engage Lift Arm Support Device...5648
To Disengage Lift Arm Support Device...5648
OPERATOR CAB...5649
Raising The Operator Cab...5649
Lowering The Operator Cab...5649
Emergency Exit...5650
SEAT BAR RESTRAINT SYSTEM...5650
Seat Bar Inspection...5650
Seat Bar Maintenance...5650
REAR DOOR...5651
Adjustment...5651
REAR GRILL...5651
AIR CLEANER SERVICE...5652
FUEL SYSTEM...5654
Fuel Specifications...5654
Filling The Fuel Tank...5654
Fuel Filter...5654
Removing Air From The Fuel System...5655
ENGINE LUBRICATION SYSTEM...5656
Check Engine Oil...5656
Replacement Of Oil And Filter...5656
COOLING SYSTEM...5658
Cleaning The Cooling System...5658
Checking The Coolant Level...5658
Removing Coolant From The Cooling System...5659
ALTERNATOR BELT...5660
Adjusting The Alternator Belt...5660
ELECTRICAL SYSTEM...5661
Description...5661
Electrical System Service...5661
Using A Booster Battery (Jump Starting)...5661
Battery Removal And Installation...5663
HYDRAULIC/HYDROSTATIC SYSTEM...5664
Checking And Adding Fluid...5664
Hydraulic/Hydrostatic Filter Replacement...5664
Hydraulic Fluid Replacement...5665
Hydraulic Reservoir Breather Cap...5665
SPARK ARRESTOR MUFFLER...5666
TIRE MAINTENANCE...5667
Wheel Nuts...5667
Tire Rotation...5667
Tire Mounting...5667
FINAL DRIVE TRANSMISSION (CHAINCASE)...5668
Checking And Adding Oil...5668
FAN GEARBOX...5668
DRIVE BELT...5669
Adjustment...5669
Drive Belt Replacement...5670
LUBRICATION OF THE BOBCAT LOADER...5671
PIVOT PINS...5672
BOB-TACH...5673
PARKING BRAKE PEDAL...5673
Adjustment...5673
SERVICE CODES...5675
SERVICE CODES...5677
SAFETY SIGNS...5679
IMPORTANT - 6560573...5681
WARNING - 6579511...5682
SERVICE SCHEDULE - 6578218...5683
WARNING - 6579510...5685
WARNING - 6579528...5686
WARNING - 6577754...5686
DANGER - 6702302...5686
DANGER - 6702301...5686
SPECIFICATIONS...5687
LOADER DIMENSIONS...5689
OPERATIONS & PERFORMANCE...5689
ENGINE...5689
HYDRAULIC SYSTEM...5690
ELECTRICAL...5690
DRIVE SYSTEM...5690
CAPACITIES...5690
TIRES...5690
ATTACHMENTS & ACCESSORIES...5691
ADDITIONAL PUBLICATIONS...5695
WARRANTY...5697
6720326 (6-12) - 753 Service Manual...5699
MAINTENANCE SAFETY...5701
CONTENTS...5705
FOREWORD...5703
SAFETY INSTRUCTIONS...5707
SERIAL NUMBER LOCATIONS...5708
LOADER SERIAL NUMBER...5708
ENGINE SERIAL NUMBER LOCATION...5708
DELIVERY REPORT...5708
BOBCAT LOADER IDENTIFICATION...5709
PREVENTIVE MAINTENANCE...5711
SERVICE SCHEDULE...5713
LIFTING AND BLOCKING THE LOADER...5714
Procedure...5714
TRANSPORTING THE LOADER...5715
Procedure...5715
LIFTING THE LOADER...5715
Procedure...5715
LIFT ARM SUPPORT DEVICE...5716
To Disengage Lift Arm Support Device...5716
To Disengage Lift Arm Support Device...5716
OPERATOR CAB...5717
Description...5717
Raising The Operator Cab...5717
Lowering The Operator Cab...5717
Raising The Operator Cab (W/Hand Controls)...5718
Lowering The Operator Cab (W/Hand Controls)...5719
SEAT BAR SYSTEM...5720
Description...5720
Seat Bar Inspection...5720
Seat Bar Maintenance...5720
AIR CLEANER...5721
Replacement Of The Filter Element...5721
FUEL SYSTEM...5723
Fuel Specifications...5723
Filling The Fuel Tank...5723
Fuel Filter...5723
Removing Air From The Fuel System...5724
ENGINE LUBRICATION SYSTEM...5725
Checking Engine Oil...5725
Replacement Of Oil And Filter...5725
ENGINE COOLING SYSTEM...5727
Cleaning The Cooling System...5727
Coolant Level...5727
Removing Coolant From The Cooling System...5728
ALTERNATOR BELT...5729
Adjusting The Alternator Belt...5729
USING A BOOSTER BATTERY (JUMP STARTING)...5730
Procedure...5730
HYDRAULIC/HYDROSTATIC SYSTEM...5731
Checking And Adding Fluid...5731
Hydraulic/Hydrostatic Filter Replacement...5731
Hydraulic Reservoir Breather Cap...5731
SPARK ARRESTOR MUFFLER...5732
Cleaning Procedure...5732
TIRE MAINTENANCE...5733
Wheel Nuts...5733
Tire Rotation...5733
Tire Mounting...5733
FINAL DRIVE TRANSMISSION (CHAINCASE)...5734
Checking And Adding Oil...5734
FAN GEARBOX...5734
Checking Grease Level...5734
DRIVE BELT...5735
Adjustment...5735
Drive Belt Replacement...5736
LUBRICATION OF THE LOADER...5737
Procedure...5737
REMOTE START SWITCH...5739
Procedure...5739
DIAGNOSTIC TOOL...5740
Procedure...5740
SENDER AND SENSOR...5740
Service Checks...5740
Component...5740
MONITOR SERVICE CODES...5742
TROUBLESHOOTING THE BOSS® & LCD DISPLAY...5744
HYDRAULIC SYSTEM...5745
HYDRAULIC / HYDROSTATIC SCHEMATICS...5747
TROUBLESHOOTING...5759
HYDRAULIC SYSTEM INFORMATION...5760
Flare Connections...5760
O–Ring Face Seal Connection...5760
Straight Thread O–Ring Fitting...5760
Tubelines And Hoses...5760
LIFT CYLINDER(S)...5761
Checking The Lift Cylinder(s)...5761
Removal And Installation...5761
TILT CYLINDER...5763
Checking The Tilt Cylinder...5763
Removal And Installation...5763
Rod End Seal...5764
HYDRAULIC CONTROL VALVE...5765
Checking The Main Relief Valve...5765
Main Relief Valve Removal And Installation...5766
HYDRAULIC CONTROL VALVE (753H)...5767
Checking The Dual Pressure Main Relief Valve (Low Setting)...5767
Checking The Dual Pressure Main Relief Valve (High Setting)...5768
Adjusting The Dual Pressure Main Relief Valve (Low Setting)...5770
Adjusting The Dual Pressure Main Relief Valve (High Setting)...5771
SELECT VALVE (753H)...5772
Checking The Main Relief Valve In High Horsepower Select Valve...5772
HYDRAULIC CONTROL VALVE ...5773
Removal And Installation...5773
HYDRAULIC PUMP...5774
Checking The Output Of The Pump...5774
Checking The Output Of The High Flow Pump...5775
Removal And Installation...5777
HYDRAULIC FILTER HOUSING...5779
Removal And Installation...5779
HYDRAULIC FLUID RESERVOIR...5781
Removal And Installation...5781
CONTROL PEDALS...5782
Removal And Installation...5782
Adjustment...5782
PEDAL INTERLOCK LINKAGE...5783
Removal And Installation...5783
Adjustment...5783
DIVERTER VALVE (OPT.)...5784
Removal And Installation...5784
HAND CONTROLS...5785
Adjustment...5785
Removal And Installation...5786
HYDROSTATIC SYSTEM...5795
TROUBLESHOOTING...5797
HYDROSTATIC SYSTEM INFORMATION...5798
Replenishing Valve Function...5798
FRONT PANEL...5799
Removal And Installation...5799
STEERING LEVERS...5801
Disassembly And Assembly...5801
STEERING LEVER CONTROL HANDLE...5803
Disassembly And Assembly...5803
STEERING LINKAGE...5804
508611001–90879511011001 & Above 511350001 & Above 511475001–75023511525001 & Above 512711001–11125, 11131 & 11139...5804
Steering Linkage Adjustment...5804
Removal And Installation...5806
Centering Plate...5807
Pintle Arm Repair...5809
512711126 – 11130, 11132 – 11138 & 11140 & Above 508690870 & Above 511475024 & Above...5809
Steering Linkage Adjustment...5810
Steering Neutral Adjustment...5812
Removal and Installation...5813
HYDROSTATIC MOTOR...5815
Removal And Installation...5815
HYDROSTATIC PUMP...5817
Removal And Installation...5817
OIL COOLER...5820
Removal And Installation...5820
DRIVE BELT TENSIONER PULLEY...5821
Disassembly...5821
Assembly...5823
Checking Pulley End Play...5827
DRIVE SYSTEM...5829
PARKING BRAKE...5831
Adjustment...5831
Removal And Installation...5832
Brake Block And Pads...5835
Brake Discs...5837
CENTER TRANSMISSION COVER...5838
Installation...5838
FRONT CHAINCASE COVER...5839
Removal And Installation...5839
REAR CHAINCASE COVER...5839
Removal And Installation...5839
MOTOR CARRIER...5840
Shaft Seal Replacement...5840
Removal And Installation (Later Models)...5842
Disassembly And Assembly (Later Models)...5843
Disassembly And Assembly (Early Models)...5843
AXLE SEAL...5844
Removal And Installation...5844
AXLE, SPROCKET AND BEARINGS...5847
Removal And Installation...5847
Checking Axle End Play...5847
DRIVE CHAIN...5851
Removal And Installation...5851
CHAINCASE FLUID...5852
Replacing The Chaincase Fluid...5852
MAIN FRAME...5853
OPERATOR CAB GAS CYLINDER...5855
Removal And Installation...5855
Disassembly And Assembly...5856
OPERATOR CAB...5857
Removal And Installation...5857
REAR DOOR...5858
Removal And Installation...5858
SEAT BAR...5858
Removal...5858
Installation...5858
REAR GRILL...5859
Removal And Installation...5859
BOB–TACH...5860
Removal And Installation...5860
Bob–Tach Lever And Wedge...5863
Bob–Tach Stops (If Equipped)...5864
LIFT ARMS...5865
Removal And Installation...5865
FUEL TANK...5867
Removal And Installation...5867
Fuel Level Sender...5868
ELECTRICAL SYSTEM...5869
ELECTRICAL SCHEMATICS...5871
ELECTRICAL SYSTEM INFORMATION...5921
Description...5921
TROUBLESHOOTING...5921
BATTERY...5922
Removal And Installation...5922
ALTERNATOR...5923
Checking The Alternator Output (Old Style)...5923
Checking The Alternator Regulator (Old Style)...5924
Alternator Output Test (New Style)...5925
Rectifier (Diode) Test (New Style)...5925
Alternator Regulator Test (New Style)...5926
Removal And Installation (Old Style)...5927
Disassembly (Old Style)...5928
Checking The Rotor (Old Style)...5928
Checking The Stator (Old Style)...5929
Checking The Rectifier (Old Style)...5929
Disassembly And Inspection (New Style)...5931
Stator Continuity Test (New Style)...5931
Stator Ground Test (New Style)...5931
Rotor Continuity Test (New Style)...5932
Rotor Ground Test (New Style)...5932
Rectifier Continuity (Diode) Test (New Style)...5932
Assembly (New Style)...5933
STARTER...5934
Checking The Starter...5934
Removal And Installation...5934
Disassembly And Assembly...5935
Cleaning And Inspection...5937
Parts Identification...5938
OPERATING SYSTEM UNIT...5939
Removal And Installation...5939
INSTRUMENT PANEL (S/N 11079 & Above)...5940
Removal And Installation...5940
ENGINE SERVICE...5941
TROUBLESHOOTING...5943
RADIATOR...5944
Removal And Installation...5944
ENGINE MUFFLER...5946
Removal And Installation...5946
BLOWER HOUSING/FAN GEARBOX...5947
Removal And Installation...5947
Tension Pulley Removal And Installation...5950
FAN GEARBOX...5951
Disassembly...5951
Long Housing...5951
Short Housing...5953
Assembly...5956
Long Housing...5956
Short Housing...5958
Checking Backlash...5961
Parts Identification...5964
AIR CLEANER...5965
Removal And Installation...5965
ENGINE...5967
Removal And Installation...5967
S/N 11079 & Above...5971
Installation...5973
FLYWHEEL...5974
Removal And Installation...5974
Flywheel Ring Gear...5974
BELT SHIELD...5975
Removal And Installation...5975
VALVE CLEARANCE...5976
Adjustment...5976
ENGINE COMPRESSION...5976
Checking...5976
GLOW PLUGS...5977
Removal And Installation...5977
Checking...5977
FUEL INJECTION PUMP...5978
Checking The Injection Pump...5978
Adjusting Shut–Off Linkage...5978
Removal And Installation...5979
Timing The Injection Pump...5981
FUEL INJECTION NOZZLES...5982
Removal And Installation...5982
Checking The Injector Nozzle...5984
CYLINDER HEAD...5985
Removal And Installation...5985
Disassembly And Assembly...5986
Servicing The Cylinder Head...5987
Top Clearance...5987
VALVE, VALVE SEAT AND GUIDE...5988
Checking The Valve Guide...5988
Reconditioning The Valve And Valve Seat...5989
Valve Spring...5990
ROCKER ARM AND SHAFT...5991
Checking...5991
TIMING GEARCASE COVER...5992
Removal And Installation...5992
IDLER GEAR AND CAMSHAFT...5994
Removal And Installation...5994
Servicing The Camshaft...5995
Servicing The Idler Gear And Shaft...5996
TIMING GEARS...5997
Checking Backlash...5997
FUEL CAMSHAFT...5998
Removal And Installation...5998
Governor...5998
CRANKSHAFT GEAR...5999
Removal And Installation...5999
OIL PUMP...5999
Removal And Installation...5999
Oil Pump Service...5999
Checking Engine Oil Pressure...6000
Relief Valve...6000
PISTON AND CONNECTING ROD...6001
Removal And Installation...6001
Servicing The Piston And Connecting Rod...6002
Connecting Rod Alignment...6004
CRANKSHAFT AND BEARINGS...6005
Removal And Installation...6005
Servicing The Crankshaft And Bearings...6006
CYLINDER BORE...6010
Checking The Cylinder Bore...6010
WATER PUMP...6011
Disassembly And Assembly...6011
SPECIFICATIONS...6013
753 LOADER SPECIFICATIONS...6015
LOADER DIMENSIONS...6015
OPERATIONS & PERFORMANCE...6015
ENGINE...6015
HYDRAULIC SYSTEM...6016
ELECTRICAL...6016
DRIVE SYSTEM...6016
CAPACITIES...6016
TIRES...6016
753H LOADER SPECIFICATIONS...6017
LOADER DIMENSIONS...6017
OPERATIONS & PERFORMANCE...6017
ENGINE...6017
HYDRAULIC SYSTEM...6018
ELECTRICAL...6018
DRIVE SYSTEM...6018
CAPACITIES...6018
TIRES...6018
ENGINE SPECIFICATIONS...6019
Fuel Injection Nozzles...6019
Fuel Injection Pump...6019
Cylinder Head...6019
Valves...6019
Valve Springs...6019
Valve Timing...6019
Rocker Arms...6019
Camshaft...6020
Tappet...6020
Cylinders...6020
Piston Rings...6020
Piston ...6020
Connecting Rod...6020
Oil Pump...6020
Crankshaft...6021
Timing Gear...6021
Thermostat...6021
Crankshaft Re–Grind Data...6022
Torque For General Metric Bolts...6023
TORQUE SPECIFICATIONS FOR LOADER...6024
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...6025
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...6026
DECIMAL AND MILLIMETER EQUIVALENTS...6027
U.S. TO METRIC CONVERSION...6027
SERVICE MANUAL REVISIONS...6029
750-001...6029
750-002...6031
750-003...6033
750-004...6035
750-005...6037
750-006...6039
750-007...6041
750-008...6043
750-009...6045
750-010...6047
750-011...6049
750-012...6051
750-013...6053
750-014...6055
6724925 (6-12) - 751 Service Manual...6057
MAINTENANCE SAFETY...6059
ALPHABETICAL INDEX...6061
CONTENTS...6063
FOREWORD...6064
SAFETY INSTRUCTIONS...6067
SERIAL NUMBER LOCATIONS...6069
LOADER SERIAL NUMBER...6069
ENGINE SERIAL NUMBER...6069
DELIVERY REPORT...6069
BOBCAT LOADER IDENTIFICATION...6070
PREVENTIVE MAINTENANCE...6071
SERVICE SCHEDULE...6073
LIFTING AND BLOCKING THE LOADER...6074
Procedure...6074
TRANSPORTING THE LOADER...6075
Procedure...6075
TOWING THE LOADER...6075
Procedure...6075
STOPPING THE BOBCAT LOADER...6075
LIFTING THE LOADER...6076
Four Point Lift...6076
Single Point Lift...6076
LIFT ARM SUPPORT DEVICE...6077
Engaging The Lift Arm Support Device...6077
Disengaging The Lift Arm Support Device...6077
OPERATOR CAB...6078
Description...6078
Raising The Operator Cab...6078
Lowering The Operator Cab...6080
Emergency Exit...6081
SEAT BAR RESTRAINT SYSTEM...6082
Description (Foot Pedals)...6082
Seat Bar Inspection (Foot Pedals)...6082
Seat Bar Maintenance (Foot Pedals)...6082
Description (Hand Controls)...6083
Seat Bar Inspection (Hand Controls)...6083
Seat Bar Maintenance (Hand Controls)...6083
AIR CLEANER SERVICE...6084
Replacing Filter Element...6084
FUEL SYSTEM...6085
Fuel Specifications...6085
Filling the Fuel Tank...6085
Fuel Filter...6085
Removing Air From The Fuel System...6086
ENGINE LUBRICATION SYSTEM...6087
Checking Engine Oil...6087
Replacing Oil and Filter...6087
ENGINE COOLING SYSTEM...6089
Cleaning the Cooling System...6089
Checking the Coolant Level...6089
Replacing The Coolant...6090
Propylene Glycol...6090
ALTERNATOR BELT...6091
Adjusting The Alternator Belt...6091
BOB–TACH...6091
FAN GEARBOX...6091
Checking And Maintaining...6091
HYDRAULIC/HYDROSTATIC SYSTEM...6092
Checking And Adding Fluid...6092
Replacing Hydraulic/Hydrostatic Filter...6092
Replacing Hydraulic Fluid...6093
Hydraulic Reservoir Breather Cap...6094
SPARK ARRESTOR MUFFLER...6095
Cleaning Procedure...6095
TIRE MAINTENANCE...6096
Wheel Nuts...6096
Tire Rotation...6096
Tire Mounting...6096
FINAL DRIVE TRANSMISSION (CHAINCASE)...6097
Checking and Adding Oil...6097
Removing Oil From the Chaincase...6097
DRIVE BELT...6098
Adjusting The Drive Belt Equipped With The Fixed Drive Idler...6098
Adjusting The Drive Belt Equipped With The Spring Loaded Drive Ider...6100
Drive Belt Replacement...6102
LUBRICATION OF THE BOBCAT LOADER...6103
Procedure...6103
PIVOT PINS...6104
REMOTE START SWITCH...6105
Procedure...6105
HYDRAULIC SYSTEM...6107
HYDRAULIC / HYDROSTATIC SCHEMATICS...6111
TROUBLESHOOTING...6113
HYDRAULIC SYSTEM INFORMATION...6114
Flare Connections...6114
O–ring Face Seal Connection...6114
Straight Thread O–ring Fitting...6114
Tubelines And Hoses...6114
LIFT CYLINDER(S)...6115
Checking The Lift Cylinder(s) For Internal Leakage...6115
Removal And Installation...6115
TILT CYLINDER...6116
Checking The Tilt Cylinder For Internal Leakage...6116
Removal And Installation...6116
Rod End Seal Replacement...6117
HYDRAULIC CYLINDER IDENTIFICATION...6118
Lift Cylinder Components...6118
Tilt Cylinder Components...6119
HYDRAULIC CYLINDERS...6120
Disassembly...6120
Assembly...6122
BICS™ VALVE (S/N 514713000 & Above, S/N 514911453 & Above)...6128
Removal...6128
Lift Arm By–Pass Orifice...6129
Disassembly...6129
Check Valve...6129
Disassembly...6129
Lock Valve...6130
Disassembly...6130
BICS™ Valve Solenoid...6131
Disassembly...6131
Assembly...6132
Lock Valve...6133
Assembly...6133
Check Valve...6133
Assembly...6133
Lift Arm By–Pass Orifice...6134
Assembly...6134
Installation...6135
CONTROL VALVE (S/N 514713000 & Above, S/N 514911453 & Above) ...6136
Removal And Installation...6136
Identification Chart...6139
Disassembly...6140
Lift Base End Restrictor Disassembly...6140
Load Check Valve Disassembly...6140
Main Relief Valve Disassembly...6141
Port Relief Valve Disassembly...6142
Anti–Cavitation Disassembly...6143
Rubber Boot Disassembly...6144
Lift Spool And Detent Disassembly...6145
Tilt Spool And Centering Spring Disassembly...6148
Auxiliary Spool Disassembly...6150
Auxiliary Electric Solenoid Disassembly...6151
Port–Auxiliary Section Disassembly...6152
Cleaning and Inspection...6152
Port–Auxiliary Section Assembly...6153
Auxiliary Electric Solenoid Assembly...6153
Auxiliary Spool Assembly...6154
Tilt Spool And Centering Spring Assembly...6155
Lift Spool And Detent Assembly...6157
Rubber Boot Assembly...6159
Anti–Cavitation/Port Relief Valve Assembly...6160
Port Relief Valve Assembly...6161
Main Relief Valve Assembly...6162
Load Check Valve Assembly...6162
Spool Seal Installation...6164
CONTROL VALVE (S/N 514712999 & Below, S/N 514911452 & Below)...6165
Removal And Installation...6165
Checking The Main Relief Valve...6168
Main Relief Valve Adjustment...6169
Main Relief Valve Removal and Installation...6169
Identification Chart...6170
Disassembly And Assembly...6171
Load Check Valve...6171
Main Relief Valve...6172
Port Relief Valve...6172
Anti–Cavitation Valve...6173
Rubber Boot...6174
Lift Spool Detent...6175
Tilt Centering Spring...6179
Auxiliary Spool...6180
Auxiliary Electric Solenoid...6181
Inspection...6182
Identification And Installation Of Spool Seal...6183
HYDRAULIC PUMP...6184
Removal And Installation...6184
Checking The Output Of The Hydraulic Pump...6186
Disassembly And Assembly...6188
Inspection...6190
Identification...6190
HYDRAULIC FILTER HOUSING...6191
Removal And Installation...6191
HYDRAULIC FLUID RESERVOIR...6192
Removal And Installation...6192
CONTROL PEDALS...6193
Removal And Installation...6193
Pedal Adjustment...6193
PEDAL INTERLOCK LINKAGE...6194
Removal And Installation...6194
Adjustment...6195
HYDROSTATIC SYSTEM...6197
TROUBLESHOOTING...6199
Chart...6199
HYDROSTATIC SYSTEM INFORMATION...6200
Replenishing Valve Function...6200
Checking Charge Pressure...6200
CONTROL PANEL...6201
Rubber Boot Replacement...6203
Removal and Installation...6201
Steering Shaft Removal and Installation...6202
Steering Shaft Disassembly and Assembly...6202
Steering Lever Removal and Installation...6203
STEERING LINKAGE...6204
Removal and Installation...6204
Steering Linkage Adjustment...6206
Steering Neutral Adjustment...6208
HYDROSTATIC DRIVE MOTOR...6210
Removal And Installation...6210
Identification...6211
Disassembly And Assembly...6212
Inspection...6216
HYDROSTATIC PUMP...6217
Removal And Installation...6217
Identification...6220
Disassembly And Assembly...6222
Inspection...6230
Swashplate Pre–Load...6232
DRIVE BELT HOUSING...6233
Removal And Installation...6233
SPRING LOADED DRIVE BELT TENSIONER PULLEY...6234
Removal And Installation...6234
Identification...6235
Disassembly...6236
Assembly...6237
FIXED DRIVE BELT TENSIONER PULLEY...6239
Removal And Installation...6239
Identification...6240
Disassembly...6241
Assembly...6243
Checking Pulley End Play...6247
OIL COOLER...6247
Removal and Installation...6247
DRIVE SYSTEM...6249
PARKING BRAKE...6251
Removal And Installation...6251
Disassembly And Assembly...6251
PARKING BRAKE DISC...6252
Removal And Installation...6252
TRACTION LOCK GUIDES...6253
Disassembly...6253
Assembly...6254
CHAINCASE FLUID...6256
Removing Oil From The Chaincase...6256
CHAINCASE COVERS...6257
Center Chaincase Cover Removal And Installation...6257
Front Chaincase Cover Removal And Installation...6258
Rear Chaincase Cover Removal And Installation...6258
MOTOR CARRIER...6259
Shaft Seal Replacement...6259
Removal And Installation...6261
Disassembly...6262
Assembly...6263
AXLE SEAL...6267
Removal and Installation...6267
AXLE, SPROCKET AND BEARINGS...6269
Removal And Installation...6269
DRIVE CHAIN...6273
Removal And Installation...6273
MAIN FRAME...6275
SEAT BAR (W/GAS CYLINDER)...6277
Removal And Installation...6277
Assembly...6279
Compressing The Gas Cylinder...6280
SEAT BAR (W/COMPRESSION SPRINGS)...6281
Removal And Installation...6281
Assembling Components...6284
Compression Spring Disassembly And Assembly...6284
OPERATOR CAB GAS CYLINDER...6285
Removal And Installation...6285
Disassembly And Assembly...6285
OPERATOR CAB...6286
Removal And Installation...6286
OPERATOR SEAT...6289
Removal And Installation...6289
BOB–TACH...6290
Removal And Installation...6290
Bob–Tach Lever And Wedge...6292
Bob–Tach Stops...6293
LIFT ARMS...6294
Removal And Installation...6294
REAR GRILL...6298
Removal And Installation...6298
FUEL TANK...6299
Removal And Installation...6299
Fuel Level Sender...6300
REAR DOOR...6301
Removal And Installation...6301
Hood Removal And Installation...6302
Bumper Removal And Installation...6302
Door Latch Removal And Installation...6302
Door Latch And Catch Adjustment...6303
ELECTRICAL SYSTEM...6305
ELECTRICAL SCHEMATICS...6307
TROUBLESHOOTING...6333
Chart...6333
ELECTRICAL SYSTEM INFORMATION...6334
Description...6334
Fuse Location...6334
BATTERY...6335
Removal And Installation...6335
Servicing The Battery...6336
Using A Booster Battery (Jump Starting)...6337
ALTERNATOR...6338
Alternator Output Test...6338
Rectifier (Diode) Test...6338
Alternator Regulator Test...6339
Removal And Installation...6340
Adjusting The Alternator Belt...6340
Disassembly And Inspection...6341
Stator Continuity Test...6341
Stator Ground Test...6341
Rotor Continuity Test...6342
Rotor Ground Test...6342
Rectifier Continuity (Diode) Test...6342
Assembly...6343
STARTER...6344
Removal And Installation (228000–5210)...6344
Removal And Installation (228000–5740)...6344
Parts Identification (228000-5210)...6345
Disassembly (228000-5210)...6346
Inspection And Repair (228000-5210)...6351
No Load Test (228000-5210)...6354
Assembly (228000-5210)...6354
Parts Identification (228000-5740)...6361
Disassembly (228000–5740)...6362
Inspection And Repair (228000–5740)...6367
No Load Test (228000–5740)...6370
Assembly (228000–5740)...6371
STANDARD INSTRUMENT PANEL...6378
Removal And Installation...6378
FRONT LIGHTS...6379
Removal And Installation...6379
RELAY SWITCHES...6380
Location...6380
Glow Plug Preheat Relay...6380
Glow System In Operator Cab...6380
Troubleshooting The Glow Plug System...6380
Testing The Glow Plug Timer Relay...6381
ENGINE SERVICE...6383
TROUBLESHOOTING...6385
Chart...6385
ENGINE SPEED CONTROL...6386
Removal And Installation...6386
Disassembly...6386
RADIATOR...6387
Removal And Installation...6387
ENGINE MUFFLER...6388
Removal And Installation...6388
BLOWER HOUSING/FAN GEARBOX...6389
Removal And Installation...6389
Tension Pulley Removal And Installation...6392
Blower Fan Disassembly And Assembly...6393
FAN GEARBOX...6395
Disassembly...6395
Long Housing...6395
Short Housing...6397
Assembly...6400
Long Housing...6400
Short Housing...6402
Checking Backlash...6405
Identification...6408
AIR CLEANER...6409
Removal And Installation...6409
ENGINE...6410
Removal And Installation...6410
Engine Mount Replacement...6415
FLYWHEEL...6416
Removal And Installation...6416
Flywheel Ring Gear...6416
INJECTION PUMP TIMING...6417
Checking Procedure...6417
Adjusting Injection Pump Timing...6418
Injection Pump Return Fitting...6418
Testing The Fuel Solenoid...6419
Idle Speed Setting...6420
TIMING BELT...6421
Removal...6421
Installation...6423
FUEL INJECTION PUMP...6424
Removal...6424
Installation...6425
FUEL INJECTOR NOZZLE...6426
Removal And Installation...6426
Checking The Injector Nozzle...6427
CYLINDER LOCATION & COMPRESSION...6427
Data...6427
GLOW PLUGS...6428
Removal And Installation...6428
Checking The Glow Plugs...6428
CYLINDER HEAD...6429
Removing The Cylinder Head...6429
Disassembly Of The Cylinder Head...6431
Removing The Combustion Chamber...6432
Removing The Heat Shield...6432
Installing The Heat Shield...6432
Servicing The Cylinder Head...6433
Checking The Valves...6434
Checking The Valve Springs...6434
Checking The Valve Guides...6435
Checking The Valve Seats...6435
Checking The Combustion Chamber...6436
Reassembly Of The Cylinder Head...6437
Installing The Cylinder Head...6440
ENGINE BLOCK...6443
Disassembly Of The Engine...6443
Assembly Of The Engine...6445
PISTONS AND CONNECTING RODS...6449
Disassembly And Assembly...6449
Checking The Piston...6449
Checking The Crankshaft...6450
CRANKSHAFT PULLEY...6451
Removal And Installation...6451
POSITIVE CRANKCASE VENTILATION VALVE...6451
Removal...6451
Installation...6451
PEUGEOT ENGINE TOOL KIT MEL1474 (Complete Kit)...6452
PEUGEOT ENGINE ...6454
Chart...6454
SYSTEMS ANALYSIS...6455
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...6457
Inspecting The BICS Controller (Engine STOPPED –Key ON)...6457
Inspecting DeactivationOf The Auxiliary Hydraulics System (Engine STOPPED–Key ON)...6457
Inspecting The Seat And Seat Bar Sensors (EngineRUNNING)...6457
Inspecting The Traction Lock (Engine RUNNING)...6457
Inspecting The Lift Arm By–Pass Control...6457
Maintenance...6458
Troubleshooting Chart...6459
Troubleshoot Guide...6460
BICS CONTROLLER...6460
TRACTION LOCK...6461
SEAT SENSOR...6462
SEAT BAR SENSOR...6463
LIFT LOCK BY–PASS VALVE...6464
BICS™ SYSTEM CONTROLLER...6465
Removal And Installation...6465
Controller Test...6466
SEAT BAR SENSOR...6467
Removal And Installation...6467
Seat Bar Sensor Test...6468
SEAT SENSOR...6469
Removal And Installation...6469
Seat Sensor Test...6470
TRACTION LOCK...6471
Removal And Installation...6471
LIFT LOCK BY–PASS VALVE...6473
Removal And Installation (S/N 514712999 & Below,S/N 514911452 & Below)...6473
Disassembly and Assembly (S/N 514712999 & Below, S/N 514911452 & Below)...6474
Removal And Installation (S/N 514713000 & Above, S/N 514911453 & Above)...6475
Disassembly And Assembly (S/N 514713000 & Above, S/N 514911453 & Above)...6476
TILT LOCK VALVE...6477
Removal And Installation (S/N 514712999 & Below, S/N 514911452 & Below)...6477
Disassembly And Assembly (S/N 514712999 & Below, S/N 514911452 & Below)...6479
SPECIFICATIONS...6481
SKID STEER LOADER SPECIFICATIONS...6483
PERFORMANCE...6483
CONTROLS...6483
ENGINE...6483
HYDRAULIC SYSTEM...6484
ELECTRICAL...6484
DRIVE SYSTEM...6484
CAPACITIES...6484
TIRES...6484
FLOOR PRESSURE...6484
VIBRATION DATA...6484
ENGINE SPECIFICATIONS...6485
Fuel Injection Nozzles...6485
Fuel Injection Pump...6485
Cylinder Head...6485
Valves...6485
Valve Springs...6486
Valve Guides...6486
Combustion Chamber...6486
Cylinders...6486
Piston Rings...6486
Pistons...6486
Connecting Rod...6487
Crankshaft...6487
TORQUE SPECIFICATIONS FOR LOADER...6488
Specifications...6488
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...6490
Specifications...6490
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...6491
DECIMAL AND MILLIMETER EQUIVALENTS...6492
U.S. TO METRIC CONVERSION...6492
SERVICE MANUAL REVISIONS...6493
751-001...6493
751-002...6495
6900090 (6-12) - 753; 753 High Flow Service Manual...6497
MAINTENANCE SAFETY...6499
ALPHABETICAL INDEX...6501
CONTENTS...6503
FOREWORD...6505
SAFETY INSTRUCTIONS...6507
SERIAL NUMBER LOCATIONS...6509
LOADER SERIAL NUMBER...6509
ENGINE SERIAL NUMBER...6509
DELIVERY REPORT...6509
BOBCAT LOADER IDENTIFICATION...6510
PREVENTIVE MAINTENANCE...6511
SERVICE SCHEDULE...6513
LIFTING AND BLOCKING THE LOADER...6514
Procedure...6514
TRANSPORTING THE LOADER...6515
Procedure...6515
TOWING THE LOADER...6515
Procedure...6515
STOPPING THE BOBCAT LOADER...6515
LIFTING THE LOADER...6516
Four Point Lift...6516
Single Point Lift...6516
LIFT ARM SUPPORT DEVICE...6517
Engaging The Lift Arm Support Device...6517
Disengaging The Lift Arm Support Device...6518
OPERATOR CAB...6519
Description...6519
Raising The Operator Cab...6519
Lowering The Operator Cab...6520
Emergency Exit...6521
SEAT BAR RESTRAINT SYSTEM (Foot Pedals)...6522
Description...6522
Seat Bar Inspection...6522
Seat Bar Maintenance...6522
SEAT BAR RESTRAINT SYSTEM (Mechanical Hand Controls)...6523
Description...6523
Seat Bar Inspection...6523
Seat Bar Maintenance...6523
SEAT BAR RESTRAINT SYSTEM (Advanced Hand Controls)...6524
Description...6524
Seat Bar Inspection...6524
Seat Bar Maintenance...6524
AIR CLEANER SERVICE...6525
Replacing Filter Element...6525
FUEL SYSTEM...6527
Fuel Specifications...6527
Filling The Fuel Tank...6527
Fuel Filter...6527
Removing Air From The Fuel System...6528
ENGINE LUBRICATION SYSTEM...6529
Checking Engine Oil...6529
Oil Chart...6529
Replacing Oil And Filter...6529
ENGINE COOLING SYSTEM...6531
Cleaning The Cooling System...6531
Checking The Coolant Level...6531
Replacing The Coolant...6532
ALTERNATOR BELT...6533
Adjusting...6533
FAN GEARBOX...6533
Checking And Maintaining...6533
HYDRAULIC/HYDROSTATIC SYSTEM...6534
Checking And Adding Fluid...6534
Replacing Hydraulic/Hydrostatic Filter...6534
Replacing Hydraulic Fluid...6535
Breather Cap...6536
SPARK ARRESTOR MUFFLER...6537
Cleaning Procedure...6537
TIRE MAINTENANCE...6538
Wheel Nuts...6538
Tire Rotation...6538
Tire Mounting...6538
FINAL DRIVE TRANSMISSION (CHAINCASE)...6539
Checking and Adding Oil...6539
Removing Oil From The Chaincase...6539
DRIVE BELT...6540
Adjusting The Drive Belt Equipped With The Fixed Drive Idler...6540
Adjusting the Drive Belt Equipped With The Spring Loaded Drive Idler...6542
Replacing The Drive Belt...6543
LUBRICATION OF THE BOBCAT LOADER...6544
Procedure...6544
PIVOT PINS...6545
BOB–TACH...6546
Inspection and Maintenance...6546
REMOTE START SWITCH...6547
Procedure...6547
HYDRAULIC SYSTEM...6549
HYDRAULIC/ HYDROSTATIC SCHEMATICS...6553
TROUBLESHOOTING...6563
HYDRAULIC SYSTEM INFORMATION...6564
Tighten Procedures...6564
LIFT CYLINDER(S)...6565
Checking The Lift Cylinder(s) For Internal Leakage...6565
Removal And Installation...6565
TILT CYLINDER...6566
Checking The Tilt Cylinder For Internal Leakage...6566
Removal And Installation...6566
Rod End Seal Replacement...6567
HYDRAULIC CYLINDER IDENTIFICATION...6568
Lift Cylinder Components...6568
Tilt Cylinder Components...6569
HYDRAULIC CYLINDERS...6570
Disassembly...6570
Assembly...6572
BICS™ VALVE (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...6578
Removal...6578
Lift Arm By–Pass Orifice Disassembly...6579
Check Valve Disassembly...6579
Lock Valve Disassembly...6580
BICS™ Valve Solenoid Disassembly...6581
BICS™ Valve Solenoid Assembly...6582
Lock Valve Assembly...6583
Check Valve Assembly...6583
Lift Arm By–Pass Orifice Assembly...6584
Installation...6585
CONTROL VALVE (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...6586
Removal And Installation...6586
Identification Chart...6589
Disassembly...6590
Lift Base End Restrictor Disassembly...6590
Load Check Valve Disassembly...6590
Main Relief Valve Disassembly...6591
Port Relief Valve Disassembly...6592
Anti–Cavitation Valve Disassembly...6593
Rubber Boot Disassembly...6594
Lift Spool And Detent Disassembly...6595
Tilt Spool And Centering Spring Disassembly...6598
Auxiliary Spool Disassembly...6600
Auxiliary Electric Solenoid Disassembly...6601
Port–Auxiliary Section Disassembly...6602
Port–Auxiliary Section Assembly...6603
Auxiliary Electric Solenoid Assembly...6603
Auxiliary Spool Assembly...6604
Tilt Spool And Centering Spring Assembly...6605
Lift Spool And Detent Assembly...6607
Rubber Boot Assembly...6609
Anti–Cavitation Valve Assembly...6610
Port Relief Valve Assembly...6611
Main Relief Valve Assembly...6612
Load Check Valve Assembly...6612
Spool Seal Installation...6614
Cleaning And Inspection...6602
CONTROL VALVE (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 5086300001 & Above & S/N 513911001 & Above)...6615
Removal And Installation...6615
Identification Chart...6618
Disassembly And Assembly...6619
Load Check Valve...6619
Main Relief Valve...6620
Port Relief Valve...6620
Anti–Cavitation Valve...6621
Rubber Boot...6622
Lift Spool Detent...6623
Tilt Centering Spring...6627
Auxiliary Spool...6628
Auxiliary Electric Solenoid...6629
Inspection...6630
Identification And Installation Of Spool Seal...6631
MAIN RELIEF VALVE...6632
Checking...6632
Adjustment...6633
Removal And Installation...6633
MAIN RELIEF VALVE (753H)...6634
Checking The Dual Pressure (Low Setting)...6634
Checking The Dual Pressure (High Setting)...6635
Adjusting The Dual Pressure (Low Setting)...6637
Adjusting The Dual Pressure (High Setting)...6638
HYDRAULIC PUMP...6639
Removal And Installation...6639
Checking The Output Of The Hydraulic Pump...6641
Checking The Output Of The HIgh Flow Hydraulic Pump (753H)...6643
Disassembly And Assembly...6644
Inspection...6646
Identification...6646
Removal And Installation (753H)...6647
Identification (753H)...6650
Disassembly And Assembly (753H)...6651
HYDRAULIC FILTER HOUSING...6654
Removal And Installation...6654
HYDRAULIC FLUID RESERVOIR...6655
Removal And Installation...6655
CONTROL PEDALS...6656
Removal And Installation...6656
Pedal Adjustment...6656
SELECT VALVE (753H)...6657
Checking the Main Relief Valve in High Horsepower Select Valve...6657
Removal and Installation...6658
Disassembly and Assembly (New Style Valve)...6660
Solenoid Testing (New Style Valve)...6661
Disassembly and Assembly (Old Style Valve)...6662
Solenoid Testing (Old Style Valve)...6663
CONTROL INTERLOCK LINKAGE (Pedal or Mechanical Hand)...6664
Removal And Installation...6664
Adjustment...6665
LIFT LOCK BY–PASS VALVE...6666
Removal And Installation (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 & Above)...6666
Disassembly and Assembly (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & 513911001 & Above)...6667
Removal And Installation (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...6668
Disassembly And Assembly (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)...6669
TILT LOCK VALVE...6670
Removal And Installation (S/N 508694508 & Below,S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 & Above)...6670
Disassembly And Assembly (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 &Above)...6672
HYDROSTATIC SYSTEM...6673
TROUBLESHOOTING...6675
HYDROSTATIC SYSTEM INFORMATION...6676
Replenishing Valve Function...6676
Checking Charge Pressure...6676
CONTROL PANEL...6677
Removal And Installation...6677
Steering Shock Removal And Installation...6678
Steering Shaft Removal And Installation...6678
Steering Shaft Disassembly And Assembly...6678
Steering Lever Removal And Installation...6679
Rubber Boot Replacement...6679
STEERING LINKAGE...6680
Removal And Installation...6680
Steering Linkage Adjustment...6682
Steering Neutral Adjustment...6684
HYDROSTATIC DRIVE MOTOR...6686
Removal And Installation...6686
Identification (S/N 512716001 & Above, 508695347 & Below, 511476001 & Above, 508630001 & Above & 513911001 & Above)...6687
Disassembly And Assembly (S/N 512716001 & Above, 508695347 & Below, 511476001 & Above, 508630149 & Above & 513911001 & Above)...6688
Inspection...6692
HYDROSTATIC MOTOR...6693
Parts Identification – (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)...6693
Disassembly (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)...6694
Assembly (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)...6699
HYDROSTATIC PUMP...6705
Removal And Installation...6705
Identification...6708
Disassembly And Assembly...6710
Inspection...6718
Swashplate Pre–Load (Earlier Models Only)...6720
DRIVE BELT HOUSING...6721
Removal And Installation...6721
SPRING LOADED DRIVE BELT TENSIONER PULLEY...6723
Removal And Installation...6723
Identification...6724
Disassembly...6725
Assembly...6728
FIXED DRIVE BELT TENSIONER PULLEY...6729
Removal And Installation...6729
Identification...6730
Disassembly...6731
Assembly...6733
Checking Pulley End Play...6737
OIL COOLER...6737
Removal And Installation...6737
DRIVE SYSTEM...6739
PARKING BRAKE...6741
Removal And Installation...6741
Disassembly And Assembly...6741
PARKING BRAKE DISC...6742
Removal And Installation...6742
TRACTION LOCK GUIDES...6743
Disassembly...6743
Assembly...6744
CHAINCASE FLUID...6746
Removing Oil From The Chaincase...6746
CHAINCASE COVERS...6747
Center Chaincase Cover Removal And Installation...6747
Front Chaincase Cover Removal And Installation...6748
Rear Chaincase Cover Removal And Installation...6748
MOTOR CARRIER...6749
Shaft Seal Replacement...6749
Removal And Installation...6751
Disassembly...6752
Assembly...6753
AXLE SEAL...6757
Removal And Installation...6757
AXLE, SPROCKET AND BEARINGS...6759
Removal And Installation...6759
DRIVE CHAIN...6763
Removal And Installation...6763
MAIN FRAME...6765
SEAT BAR (W/GAS CYLINDER)...6767
Removal And Installation...6767
Assembly...6769
Compressing The Gas Cylinder...6770
SEAT BAR (W/COMPRESSION SPRING)...6771
Removal And Installation...6771
Assembling Components...6774
Compression Spring Disassembly And Assembly...6774
OPERATOR CAB GAS CYLINDER...6775
Removal And Installation...6775
Disassembly And Assembly...6775
OPERATOR CAB...6776
Removal And Installation...6776
OPERATOR SEAT...6779
Removal And Installation...6779
BOB–TACH...6780
Removal And Installation...6780
Bob–Tach Lever And Wedge...6782
Bob–Tach Stops...6783
LIFT ARMS...6784
Removal And Installation...6784
REAR GRILL...6788
Removal And Installation...6788
FUEL TANK...6789
Removal And Installation...6789
Fuel Level Sender...6790
REAR DOOR...6791
Removal And Installation (Two Piece Door)...6791
Removal And Installation (One Piece Door)...6792
Hood Removal And Installation (Two Piece Door)...6793
Bumper Removal And Installation (Two Piece Door)...6793
Door Latch Removal And Installation...6793
Door Latch And Catch Adjustment...6794
REAR LIGHTS...6795
Removal and Installation (One Piece Door)...6795
ELECTRICAL SYSTEM...6797
ELECTRICAL SCHEMATICS...6799
TROUBLESHOOTING...6825
ELECTRICAL SYSTEM INFORMATION...6826
Description...6826
BATTERY...6827
Removal And Installation...6827
Servicing The Battery...6828
Using A Booster Battery (Jump Starting)...6829
ALTERNATOR...6830
Alternator Output Test...6830
Rectifier (Diode) Test...6830
Alternator Regulator Test...6831
Removal And Installation...6832
Adjusting The Alternator Belt...6832
Disassembly And Inspection...6833
Stator Continuity Test...6833
Stator Ground Test...6833
Rotor Continuity Test...6834
Rotor Ground Test...6834
Rectifier Continuity (Diode) Test...6834
Assembly...6835
STARTER (DELCO REMY)...6836
Checking The Starter...6836
Parts Identification...6837
Disassembly And Assembly...6838
Cleaning And Inspection...6840
STARTER (DENSO)...6840
Removal And Installation...6840
Parts Identification...6841
Disassembly...6842
Inspection And Repair...6847
No Load Test...6850
Assembly...6850
STANDARD INSTRUMENT PANEL...6857
Removal And Installation...6857
FRONT LIGHTS...6858
Removal And Installation...6858
RELAY SWITCHES...6859
Location...6859
ENGINE SERVICE...6861
TROUBLESHOOTING...6863
ENGINE SPEED CONTROL...6864
Removal And Installation...6864
Disassembly...6864
RADIATOR...6865
Removal And Installation...6865
ENGINE MUFFLER...6866
Removal And Installation...6866
BLOWER HOUSING/FAN GEARBOX...6867
Removal And Installation...6867
Tension Pulley Removal And Installation...6870
Blower Fan Disassembly And Assembly...6871
FAN GEARBOX...6874
Identification...6873
Disassembly...6874
Assembly...6879
Checking Backlash...6884
AIR CLEANER...6887
Removal And Installation...6887
ENGINE...6888
Removal And Installation...6888
Engine Mount Replacement...6893
FLYWHEEL...6894
Removal And Installation...6894
Flywheel Ring Gear...6894
ENGINE COMPRESSION...6895
Checking...6895
GLOW PLUGS...6896
Checking The Glow Plugs...6896
Removal And Installation...6897
FUEL INJECTION PUMP...6898
Checking The Injection Pump...6898
Adjusting Shut–Off Linkage...6898
FUEL INJECTION PUMP...6899
Removal And Installation...6899
Timing The Injection Pump...6902
FUEL INJECTOR NOZZLES...6903
Removal And Installation...6903
Checking The Injector Nozzle...6905
CYLINDER HEAD...6906
Removal And Installation...6906
Disassembly And Assembly...6907
Servicing The Cylinder Head...6908
Top Clearance...6908
VALVE, VALVE SEAT AND GUIDE...6909
Checking The Valve Guide...6909
Valve Spring...6911
VALVE CLEARANCE...6912
Adjustment...6912
ROCKER ARM AND SHAFT...6912
Checking...6912
TIMING GEARCASE COVER...6913
Removal And Installation...6913
IDLER GEAR AND CAMSHAFT...6915
Removal And Installation...6915
Servicing The Camshaft...6916
Servicing The Idler Gear And Shaft...6917
TIMING GEARS...6918
Checking Backlash...6918
FUEL CAMSHAFT...6919
Removal And Installation...6919
Governor...6919
CRANKSHAFT GEAR...6920
Removal And Installation ...6920
OIL PUMP...6920
Removal And Installation...6920
Oil Pump Service...6920
Checking Engine Oil Pressure...6921
Relief Valve...6921
PISTON AND CONNECTING ROD...6922
Removal And Installation...6922
Servicing The Piston And Connecting Rod...6923
Connecting Rod Alignment...6925
CRANKSHAFT AND BEARINGS...6926
Removal And Installation...6926
Servicing the Crankshaft and Bearings...6927
CYLINDER BORE...6931
Checking The Cylinder Bore...6931
WATER PUMP...6932
Disassembly And Assembly...6932
SYSTEMS ANALYSIS...6933
BICS™ (WITH PRESS TO OPERATE BUTTON)...6935
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...6935
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED - Key ON)...6935
Inspecting The Seat Bar Sensor (Engine RUNNING)...6935
Inspecting The Traction Lock (Engine RUNNING)...6935
Inspecting The Lift Arm By-Pass Control...6935
Additional Inspection For Loaders With Advanced Hand Controls...6935
Troubleshooting Chart...6936
BICS™ (Without Press To Operate Button)...6937
Inspecting The BICS Controller (Engine STOPPED –Key ON)...6937
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED–Key ON)...6937
Inspecting The Seat And Seat Bar Sensors (EngineRUNNING)...6937
Inspecting The Traction Lock (Engine RUNNING)...6937
Inspecting The Lift Arm By–Pass Control...6937
Maintenance...6938
Troubleshooting Chart...6939
BICS™ SYSTEM CONTROLLER...6940
Troubleshooting Guide...6940
Removal And Installation...6941
SEAT BAR SENSOR...6942
Troubleshooting Guide...6942
Seat Bar Sensor Test...6943
Removal And Installation...6944
BICS™ Controller Seat Bar Sensor Circuit Test...6945
SEAT SENSOR...6946
Troubleshooting Guide...6946
Seat Sensor Test...6947
Removal And Installation...6948
BICS™ Controller Seat Sensor Circuit Test...6949
TRACTION LOCK...6950
Troubleshooting Guide...6950
Removal And Installation...6951
BOSS® DIAGNOSTIC TOOL...6953
Procedure...6953
SENDER AND SENSOR...6953
Service Checks...6953
RPM SENSOR...6953
MONITOR SERVICE CODES...6954
TROUBLESHOOTING THE BOSS® & LCD DISPLAY...6956
BOSS® UNIT...6957
Removal And Installation...6957
BOSS® INSTRUMENT PANEL...6958
Removal And Installation...6958
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...6959
Controls Identification Chart...6959
SPECIFICATIONS...6961
SKID STEER LOADER SPECIFICATIONS...6963
753 - S/N 515811001 & Above, S/N 516211001 & Above...6963
PERFORMANCE...6963
CONTROLS...6963
ENGINE...6964
HYDRAULIC SYSTEM...6964
ELECTRICAL...6964
DRIVE SYSTEM...6965
CAPACITIES...6965
TIRES...6965
FLOOR PRESSURE...6965
753, 753H - S/N 508693001 & Above, S/N 508630001 & Above, S/N 511476001 & Above, S/N 512716001 & Above, S/N 513911001 & Above...6966
PERFORMANCE...6966
CONTROLS...6966
ENGINE...6967
HYDRAULIC SYSTEM...6967
ELECTRICAL...6967
DRIVE SYSTEM...6968
CAPACITIES...6968
TIRES...6968
FLOOR PRESSURE...6968
ENGINE SPECIFICATIONS...6969
Fuel Injection Nozzles...6969
Fuel Injection Pump...6969
Cylinder Head...6969
Valves...6969
Valve Springs...6969
Valve Timing...6969
Rocker Arms...6969
Camshaft...6970
Tappet...6970
Cylinders...6970
Piston Rings...6970
Pistons...6970
Connecting Rod...6970
Oil Pump...6970
Crankshaft...6971
Timing Gear...6971
Thermostat...6971
Crankshaft Re–Grind Data...6972
Torque For General Metric Bolts...6973
HYDRAULIC CONNECTION SPECIFICATIONS...6974
O–Ring Face Seal Connection...6974
Straight Thread O–Ring Fitting...6974
Tubelines And Hoses...6974
Flare Fitting...6974
O–Ring Flare Fitting...6975
Port Seal Fitting...6977
TORQUE SPECIFICATIONS FOR LOADER...6978
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...6979
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...6980
DECIMAL AND MILLIMETER EQUIVALENTS...6981
U.S. TO METRIC CONVERSION...6981
ADVANCED HAND CONTROL SYSTEM (AHC)...6983
WIRING SCHEMATICS W/ADVANCED HAND CONTROL OPTIONS...6985
AHC COMPONENTS...6995
Identification...6995
TROUBLESHOOTING (AHC)...6996
ACTUATOR VOLTAGE TEST...6998
Procedure...6998
HANDLE CONTROL UNIT TEST...7001
Procedure...7001
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...7004
Troubleshooting Chart...7004
ADVANCED HAND CONTROLS (AHC)...7004
Troubleshooting Chart...7004
AHC/PWM CONTROLLER...7005
Removal And Installation...7005
Description...7006
Conditions...7007
Troubleshooting Chart...7007
Handle Testing...7008
Solenoid Coil Testing...7008
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)...7009
Control Handle Unit Removal And Installation...7009
Control Unit Connector...7012
Switch Handle Removal And Installation...7013
AHC Handle Removal And Installation...7016
AHC Handle Disassembly And Assembly...7017
AHC Steering Lever Removal And Installation...7018
AHC Steering Lever Boot...7018
Actuators Removal And Installation...7019
Actuators Disassembly And Assembly...7020
Components Identification...7021
Controller Connector And Wire Identification...7022
AHC/PWM Controller Removal And Installation...7023
Handle Sensor Removal And Installation...7024
Handle Sensor Connector...7026
Switch Handle Removal And Installation...7027
Control Handle Removal And Installation...7030
Control Handle Disassembly And Assembly...7031
Control Lever Removal And Installation...7032
Control Lever Boot...7033
Actuators Disassembly And Assembly...7034
BICS™ VALVE...7035
Lift Arm By–Pass Orifice...7035
Check Valve...7036
Lock Valve...7036
BICS™ Valve Solenoid...7037
Removal And Installation...7038
HYDRAULIC CONTROL VALVE...7039
Removal And Installation...7039
Identification Chart...7041
Disassembly And Assembly...7042
Load Check Valve...7042
Lift Base End Restrictor...7042
Main Relief Valve...7043
Port Relief Valve (Lift)...7044
Anti–Cavitation/Port Relief Valve...7044
Port Relief Valve (Tilt)...7045
Anti–Cavitation Valve...7045
Rubber Boot...7046
Lift And Tilt Spool...7047
Inspection...7049
Auxiliary Spool...7050
Auxiliary Electrical Solenoid...7051
Spool Seal Installation...7052
H–Port Auxiliary Section...7053
SERVICE MANUAL REVISIONS...7055
753, 753H–1...7055
753/753H–2...7057
753/753H–3...7059
753/753H–4...7061
753/753H–5...7063
753/753H-6...7065
6900443 (6-12) - 751 Service Manual...7067
MAINTENANCE SAFETY...7069
ALPHABETICAL INDEX...7071
CONTENTS...7073
FOREWORD...7075
SAFETY INSTRUCTIONS...7077
SERIAL NUMBER LOCATIONS...7079
LOADER SERIAL NUMBER...7079
ENGINE SERIAL NUMBER...7079
DELIVERY REPORT...7079
BOBCAT LOADER IDENTIFICATION...7080
PREVENTIVE MAINTENANCE...7081
SERVICE SCHEDULE...7083
LIFTING AND BLOCKING THE LOADER...7084
Procedure...7084
TRANSPORTING THE LOADER...7085
Procedure...7085
TOWING THE LOADER...7085
Procedure...7085
STOPPING THE BOBCAT LOADER...7085
LIFTING THE LOADER...7086
Four Point Lift...7086
Single Point Lift...7086
LIFT ARM SUPPORT DEVICE...7087
Engaging The Lift Arm Support Device...7087
Disengaging The Lift Arm Support Device...7088
OPERATOR CAB...7089
Description...7089
Raising The Operator Cab...7089
Lowering The Operator Cab...7090
Emergency Exit...7091
SEAT BAR RESTRAINT SYSTEM (Foot Pedals)...7092
Description...7092
Seat Bar Inspection...7092
Seat Bar Maintenance...7092
SEAT BAR RESTRAINT SYSTEM (Mechanical Hand Controls)...7093
Description...7093
Seat Bar Inspection...7093
Seat Bar Maintenance...7093
SEAT BAR RESTRAINT SYSTEM (Advanced Hand Controls)...7094
Description...7094
Seat Bar Inspection...7094
Seat Bar Maintenance...7094
AIR CLEANER SERVICE...7095
Replacing Filter Element...7095
FUEL SYSTEM...7097
Fuel Specifications...7097
Filling The Fuel Tank...7097
Fuel Filter...7097
Removing Air From The Fuel System...7098
ENGINE LUBRICATION SYSTEM...7099
Checking Engine Oil...7099
Oil Chart...7099
Replacing Oil And Filter...7099
ENGINE COOLING SYSTEM...7101
Cleaning The Cooling System...7101
Checking The Coolant Level...7101
Replacing The Coolant...7102
ALTERNATOR BELT...7103
Adjusting...7103
FAN GEARBOX...7103
Checking And Maintaining...7103
HYDRAULIC/HYDROSTATIC SYSTEM...7104
Checking And Adding Fluid...7104
Replacing Hydraulic/Hydrostatic Filter...7104
Replacing Hydraulic Fluid...7105
Breather Cap...7106
SPARK ARRESTOR MUFFLER...7107
Cleaning Procedure...7107
TIRE MAINTENANCE...7108
Wheel Nuts...7108
Tire Rotation...7108
Tire Mounting...7108
FINAL DRIVE TRANSMISSION (CHAINCASE)...7109
Checking and Adding Oil...7109
Removing Oil From The Chaincase...7109
DRIVE BELT...7110
Adjusting the Drive Belt...7110
Replacing The Drive Belt...7111
LUBRICATION OF THE BOBCAT LOADER...7112
Procedure...7112
PIVOT PINS...7113
BOB–TACH...7114
Inspection and Maintenance...7114
REMOTE START SWITCH...7115
Procedure...7115
HYDRAULIC SYSTEM...7117
HYDRAULIC / HYDROSTATIC SCHEMATICS...7119
GLOSSARY OF HYDRAULIC/HYDROSTATIC SYMBOLS FOR LOADERS...7127
TROUBLESHOOTING...7131
HYDRAULIC SYSTEM INFORMATION...7132
Tightening Procedures...7132
LIFT CYLINDER(S)...7133
Checking The Lift Cylinders...7133
Removal And Installation...7133
TILT CYLINDER...7134
Checking The Tilt Cylinder...7134
Removal And Installation...7134
Rod End Seal Replacement...7135
HYDRAULIC CYLINDER IDENTIFICATION...7136
Lift Cylinder Components...7136
Tilt Cylinder Components...7137
HYDRAULIC CYLINDERS...7138
Disassembly...7138
Assembly...7140
MAIN RELIEF VALVE...7146
Checking...7146
Adjustment...7147
Removal And Installation...7147
BICS™ VALVE...7148
Lift Arm By–Pass Orifice...7148
Lock Valve...7149
Check Valve...7149
BICS™ Valve Solenoid...7150
Removal...7151
Installation...7152
HYDRAULIC CONTROL VALVE...7153
Removal And Installation...7153
Identification Chart...7156
Disassembly...7157
Load Check Valve...7157
Lift Base End Restrictor...7157
Main Relief Valve...7158
Port Relief Valve (Lift)...7159
Anti–Cavitation...7159
Rubber Boot...7161
Lift Spool And Detent...7162
Tilt Spool And Centering Spring...7167
Inspection...7169
Auxiliary Spool...7170
Auxiliary Electric Solenoid...7171
Port–Auxiliary Section...7172
Cleaning and Inspection...7172
Spool Seal Installation...7173
HYDRAULIC PUMP...7174
Checking The Output Of The Hydraulic Pump...7174
Removal And Installation...7176
Disassembly And Assembly...7178
Inspection...7180
Identification...7180
HYDRAULIC FILTER HOUSING...7181
Removal And Installation...7181
HYDRAULIC FLUID RESERVOIR...7182
Removal And Installation...7182
CONTROL PEDALS...7183
Removal And Installation...7183
Pedal Adjustment...7183
CONTROL INTERLOCK LINKAGE (Pedal or Mechanical Hand)...7184
Adjustment...7184
Removal And Installation...7185
LIFT LOCK BY–PASS VALVE...7186
Removal And Installation...7186
Disassembly And Assembly...7187
HYDROSTATIC SYSTEM...7189
TROUBLESHOOTING...7191
HYDROSTATIC SYSTEM INFORMATION...7192
Replenishing Valve Function...7192
Checking Charge Pressure...7192
CONTROL PANEL...7193
Removal And Installation...7193
Steering Shaft Removal And Installation...7194
Steering Shaft Disassembly And Assembly...7194
Steering Lever Removal And Installation...7195
Rubber Boot Replacement...7195
STEERING LINKAGE...7196
Removal And Installation...7196
Steering Linkage Adjustment...7198
HYDROSTATIC DRIVE MOTOR...7202
Removal And Installation...7202
Parts Identification...7203
Disassembly...7204
Assembly...7209
HYDROSTATIC PUMP...7215
Removal And Installation...7215
Identification...7218
Disassembly And Assembly...7220
Inspection...7228
DRIVE BELT HOUSING...7230
Removal And Installation...7230
SPRING LOADED DRIVE BELT TENSIONER PULLEY...7232
Removal And Installation...7232
Identification...7233
Disassembly...7234
Assembly...7235
OIL COOLER...7237
Removal And Installation...7237
DRIVE SYSTEM...7239
PARKING BRAKE...7241
Removal And Installation...7241
Disassembly And Assembly...7241
PARKING BRAKE DISC...7242
Removal And Installation...7242
TRACTION LOCK GUIDES...7243
Disassembly...7243
Assembly...7244
CHAINCASE FLUID...7246
Removing Oil From The Chaincase...7246
CHAINCASE COVERS...7247
Center Chaincase Cover Removal And Installation...7247
Front Chaincase Cover Removal And Installation...7248
Rear Chaincase Cover Removal And Installation...7248
MOTOR CARRIER...7249
Shaft Seal Replacement...7249
Removal And Installation...7251
Disassembly...7252
Assembly...7253
AXLE SEAL...7257
Removal and Installation...7257
AXLE, SPROCKET AND BEARINGS...7259
Removal And Installation...7259
DRIVE CHAIN...7263
Removal And Installation...7263
MAIN FRAME...7265
SEAT BAR (W/COMPRESSION SPRINGS)...7267
Removal And Installation...7267
Assembling Components...7270
Compression Spring Disassembly And Assembly...7270
OPERATOR CAB GAS CYLINDER...7271
Removal And Installation...7271
Disassembly And Assembly...7271
OPERATOR CAB...7272
Removal And Installation...7272
OPERATOR SEAT...7275
Removal And Installation...7275
BOB–TACH...7276
Bob–Tach Lever And Wedge...7278
Removal And Installation...7276
Bob–Tach Stops...7279
LIFT ARMS...7280
Removal And Installation...7280
REAR GRILL...7284
Removal And Installation...7284
FUEL TANK...7285
Removal And Installation...7285
Fuel Level Sender...7286
REAR DOOR...7287
Removal And Installation...7287
Door Latch Removal And Installation...7288
Door Latch And Catch Adjustment...7289
ELECTRICAL SYSTEM...7291
ELECTRICAL SCHEMATICS...7295
TROUBLESHOOTING...7303
ELECTRICAL SYSTEM INFORMATION...7304
Description...7304
Fuse Location...7304
BATTERY...7305
Removal And Installation...7305
Servicing The Battery...7306
Using A Booster Battery (Jump Starting)...7307
ALTERNATOR...7308
Alternator Output Test...7308
Rectifier (Diode) Test...7308
Alternator Regulator Test...7309
Removal And Installation...7310
Adjusting The Alternator Belt...7310
Disassembly And Inspection...7311
Stator Continuity Test...7311
Stator Ground Test...7311
Rotor Continuity Test...7312
Rotor Ground Test...7312
Rectifier Continuity (Diode) Test...7312
Assembly...7313
STARTER...7314
Removal And Installation...7314
Parts Identification...7315
Disassembly...7316
Inspection And Repair...7321
No Load Test...7324
Assembly...7324
STANDARD INSTRUMENT PANEL...7331
Removal And Installation...7331
FRONT LIGHTS...7332
Removal And Installation...7332
RELAY SWITCHES...7333
Location...7333
ENGINE SERVICE...7335
TROUBLESHOOTING...7337
ENGINE SPEED CONTROL...7338
Removal And Installation...7338
Disassembly...7338
RADIATOR...7339
Removal And Installation...7339
ENGINE MUFFLER...7340
Removal And Installation...7340
BLOWER HOUSING/FAN GEARBOX...7341
Removal And Installation...7341
Tension Pulley Removal And Installation...7344
Blower Fan Disassembly And Assembly...7345
FAN GEARBOX...7347
Identification...7347
Disassembly...7348
Assembly...7353
Checking Backlash...7358
AIR CLEANER...7361
Removal And Installation...7361
ENGINE...7362
Removal And Installation...7362
Engine Mount Replacement...7367
FLYWHEEL...7368
Removal And Installation...7368
Flywheel Ring Gear...7368
ENGINE COMPRESSION...7369
Checking...7369
GLOW PLUGS...7370
Checking The Glow Plugs...7370
Removal And Installation...7371
FUEL INJECTION PUMP...7372
Checking The Injection Pump...7372
Adjusting Shut–Off Linkage...7372
Removal And Installation...7373
Timing The Injection Pump...7376
FUEL INJECTION NOZZLES...7377
Removal And Installation...7377
Checking The Injector Nozzle...7379
CYLINDER HEAD...7380
Removal And Installation...7380
Disassembly And Assembly...7381
Servicing The Cylinder Head...7382
Top Clearance...7382
VALVE, VALVE SEAT AND GUIDE...7383
Checking The Valve Guide...7383
Valve Spring...7385
VALVE CLEARANCE...7386
Adjustment...7386
ROCKER ARM AND SHAFT...7386
Checking...7386
TIMING GEARCASE COVER...7387
Removal And Installation...7387
IDLER GEAR AND CAMSHAFT...7389
Servicing The Camshaft...7390
Removal And Installation...7389
Servicing The Idler Gear And Shaft...7391
TIMING GEARS...7392
Checking Backlash...7392
FUEL CAMSHAFT...7393
Removal And Installation...7393
Governor...7393
CRANKSHAFT GEAR...7394
Removal And Installation ...7394
OIL PUMP...7394
Removal And Installation...7394
Oil Pump Service...7394
Checking Engine Oil Pressure...7395
Relief Valve...7395
PISTON AND CONNECTING ROD...7396
Removal And Installation...7396
Servicing The Piston And Connecting Rod...7397
Connecting Rod Alignment...7399
CRANKSHAFT AND BEARINGS...7400
Removal And Installation...7400
Servicing the Crankshaft and Bearings...7401
CYLINDER BORE...7405
Checking The Cylinder Bore...7405
WATER PUMP...7406
Disassembly And Assembly...7406
SYSTEMS ANALYSIS...7407
BICS™ – BOBCAT INTERLOCK CONTROL SYSTEM...7409
BICS™ (With Press To Operate Button)...7409
Inspecting The BICS™ Controller (Engine STOPPED – Key ON)...7409
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED – Key ON)...7409
Inspecting The Seat Bar Sensor (Engine RUNNING)...7409
Inspecting The Traction Lock (Engine RUNNING)...7409
Inspecting The Lift Arm By–Pass Control...7409
Additional Inspection For Loaders With Advanced Hand Controls...7409
Troubleshooting Chart...7410
ADVANCED HAND CONTROLS (AHC)...7410
Troubleshooting Chart...7410
BICS™ (Without Press To Operate Button)...7411
Inspecting The BICS Controller (Engine STOPPED –Key ON)...7411
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED–Key ON)...7411
Inspecting The Seat And Seat Bar Sensors (Engine RUNNING)...7411
Inspecting The Traction Lock (Engine RUNNING)...7411
Inspecting The Lift Arm By–Pass Control...7411
Maintenance...7412
Troubleshooting Chart...7413
BICS™ SYSTEM CONTROLLER...7414
Troubleshooting Guide...7414
Removal And Installation...7415
SEAT BAR SENSOR...7416
Troubleshooting Guide...7416
Seat Bar Sensor Test...7417
Removal And Installation...7418
BICS™ Controller Seat Bar Sensor Circuit Test...7419
SEAT SENSOR...7420
Troubleshooting Guide...7420
Seat Sensor Test...7421
Removal And Installation...7422
BICS™ Controller Seat Sensor Circuit Test...7423
TRACTION LOCK...7424
Troubleshooting Guide...7424
Removal And Installation...7425
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...7427
Controls Identification Chart...7427
SPECIFICATIONS...7429
LOADER SPECIFICATIONS...7431
SPECIFICATIONS...7431
PERFORMANCE...7431
CONTROLS...7431
ENGINE...7431
HYDRAULIC SYSTEM...7432
ELECTRICAL...7432
DRIVE SYSTEM...7432
CAPACITIES...7432
TIRES...7432
FLOOR PRESSURE...7432
ENGINE SPECIFICATIONS...7433
Fuel Injection Nozzles...7433
Fuel Injection Pump...7433
Cylinder Head...7433
Valves...7433
Valve Springs...7433
Valve Timing...7433
Rocker Arms...7433
Camshaft...7434
Tappet...7434
Cylinders...7434
Piston Rings...7434
Pistons...7434
Connecting Rod...7434
Oil Pump...7434
Crankshaft...7435
Timing Gear...7435
Thermostat...7435
Crankshaft Re–Grind Data...7436
Torque For General Metric Bolts...7437
HYDRAULIC CONNECTION SPECIFICATIONS...7438
O–Ring Face Seal Connection...7438
Straight Thread O–ring Fitting...7438
Tubelines And Hoses...7438
Flare Fitting...7438
O–Ring Flare Fitting...7439
Port Seal Fitting...7441
TORQUE SPECIFICATIONS FOR LOADER...7442
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS...7443
STANDARD TORQUE SPECIFICATIONS FOR BOLTS...7444
DECIMAL AND MILLIMETER EQUIVALENTS...7445
U.S. TO METRIC CONVERSION...7445
ADVANCE HAND CONTROL SYSTEM (AHC)...7447
ELECTRICAL SCHEMATICS W/ADVANCED HAND CONTROL OPTIONS...7449
AHC COMPONENTS...7455
Identification...7455
TROUBLESHOOTING (AHC)...7456
Chart...7456
ACTUATOR VOLTAGE TEST...7458
Procedure...7458
HANDLE CONTROL UNIT TEST...7461
Procedure...7461
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...7464
Troubleshooting Chart...7464
ADVANCED HAND CONTROLS (AHC)...7464
Troubleshooting Chart...7464
AHC/PWM CONTROLLER...7465
Removal And Installation...7465
Description...7466
Conditions...7467
Troubleshooting Chart...7467
Handle Testing...7468
Solenoid Coil Testing...7468
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)...7469
Control Handle Unit Removal And Installation...7469
Control Unit Connector...7472
Switch Handle Removal And Installation...7473
AHC Handle Removal And Installation...7476
AHC Handle Disassembly And Assembly...7477
AHC Steering Lever Removal And Installation...7478
AHC Steering Lever Boot...7478
Actuators Removal And Installation...7479
Actuators Disassembly And Assembly...7480
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) (W/PUSH BUTTON FLOAT)...7481
Components Identification...7481
Controller Connector And Wire Identification...7482
AHC/PWM Controller Removal And Installation...7483
Handle Sensor Removal And Installation...7484
Handle Sensor Connector...7486
Switch Handle Removal And Installation...7487
Control Handle Removal And Installation...7490
Control Handle Disassembly And Assembly...7491
Control Lever Removal And Installation...7492
Control Lever Boot...7493
Actuators Disassembly And Assembly...7494
Components Identification...7481
BICS™ VALVE...7495
Lift Arm By–Pass Orifice...7495
Check Valve...7496
Lock Valve...7496
BICS™ Valve Solenoid...7497
Removal And Installation...7498
HYDRAULIC CONTROL VALVE...7499
Removal And Installation...7499
Identification Chart...7501
Disassembly And Assembly...7502
Load Check Valve...7502
Lift Base End Restrictor...7502
Main Relief Valve...7503
Port Relief Valve (Lift)...7504
Anti–Cavitation/Port Relief Valve...7504
Port Relief Valve (Tilt)...7505
Anti–Cavitation Valve...7505
Rubber Boot...7506
Lift And Tilt Spool...7507
Inspection...7509
Auxiliary Spool...7510
Auxiliary Electrical Solenoid...7511
Spool Seal Installation...7512
H–Port Auxiliary Section...7513
SERVICE MANUAL REVISIONS...7515
751–1...7515
751–2...7517
751–3...7519
751–4...7521
751-5...7523
6900975 (6-12) - 751 Service Manual...7525
MAINTENANCE SAFETY...7527
ALPHABETICAL INDEX...7529
CONTENTS...7531
FOREWORD...7532
SAFETY INSTRUCTIONS...7535
Fire Prevention...7537
SERIAL NUMBER LOCATIONS...7539
Loader Serial Number...7539
Engine Serial Number...7539
DELIVERY REPORT...7539
LOADER IDENTIFICATION...7540
SAFETY & MAINTENANCE...7541
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)...7543
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...7543
Inspecting Deactivation Of The Auxiliary Hydraulics...7543
System (Engine STOPPED - Key ON)...7543
Inspecting The Seat Bar Sensor (Engine RUNNING)...7543
Inspecting The Traction Lock (Engine RUNNING)...7543
Inspecting The Lift Arm By-Pass Control...7543
Additional Inspection For Loaders With Advanced...7543
Hand Controls (AHC)...7543
LIFTING AND BLOCKING THE LOADER...7545
Procedure...7545
TRANSPORTING THE BOBCAT LOADER...7547
Procedure...7547
TOWING THE LOADER...7549
Procedure...7549
LIFT ARM SUPPORT DEVICE...7551
Engaging The Lift Arm Support Device...7551
Disengaging The Lift Arm Support Device...7553
BOB-TACH...7555
Inspection and Maintenance...7555
OPERATOR CAB...7557
Description...7557
Raising The Operator Cab...7557
Lowering The Operator Cab...7558
Emergency Exit...7559
SEAT BAR RESTRAINT SYSTEM (FOOT PEDALS)...7561
Description...7561
Inspecting the Seat Bar...7561
Maintaining the Seat Bar...7561
SEAT BAR RESTRAINT SYSTEM (ADVANCED HAND CONTROLS)...7563
Description...7563
Inspecting the Seat Bar...7563
Maintaining the Seat Bar...7563
REMOTE START...7565
Procedure...7565
SERVICE SCHEDULE...7567
Chart...7567
FUEL SYSTEM...7569
Fuel Specifications...7569
Filling the Fuel Tank...7569
Fuel Filter...7570
Removing Air From The Fuel System...7571
AIR CLEANER SERVICE...7573
Checking...7573
ENGINE LUBRICATION SYSTEM...7575
Checking Engine Oil...7575
Oil Chart...7575
Replacing Oil And Filter...7575
ENGINE COOLING SYSTEM...7577
Cleaning The Cooling System...7577
Checking The Coolant Level...7577
Replacing The Coolant...7578
HYDRAULIC/HYDROSTATIC SYSTEM...7579
Checking And Adding Fluid...7579
Replacing Hydraulic/Hydrostatic Filter...7579
Replacing Hydraulic Fluid and Case Dain Filters...7580
Breather Cap...7581
TIRE MAINTENANCE...7583
Wheel Nuts...7583
Rotating...7583
Mounting...7583
LUBRICATION OF THE BOBCAT LOADER...7585
Procedure...7585
HYDRAULIC SYSTEM...7587
HYDRAULIC/HYDROSTATIC SCHEMATICS...7589
HYDRAULIC SYSTEM INFORMATION...7591
Tighten Procedures...7594
Troubleshooting Chart...7595
CYLINDER(S)...7597
Checking The Lift Cylinders...7597
Lift Cylinders Removal And Installation...7598
Checking The Tilt Cylinder...7599
Tilt Cylinder Removal And Installation...7600
Lift Cylinder Identification...7602
Tilt Cylinder Identification...7603
Disassembly...7604
Assembly...7606
MAIN RELIEF VALVE...7609
Checking...7609
Adjustment...7610
Removal and Installation...7610
BICS™ VALVE...7611
Removal And Installation...7611
Lift Arm By-Pass Orifice Dissembly And Assembly...7612
Check Valve Dissembly And Assembly...7613
Lock Valve Dissembly And Assembly...7614
Solenoid Dissembly And Assembly...7615
Solenoid Testing...7616
HYDRAULIC CONTROL VALVE (FOOT CONTROL)...7617
Removal And Installation...7617
Identification Chart...7621
Load Check Valve...7622
Main Relief Valve...7623
Port Relief Valve...7624
Anti-Cavitation Valve...7625
Plug...7626
Rubber Boot...7627
Lift And Tilt Lock Block...7628
Lift Spool and Detent...7629
Tilt Spool Removal And Installation...7638
Auxiliary Spool Removal And Installation...7640
Auxiliary Electric Solenoid Disassembly...7641
Port-Auxiliary Section Disassembly...7642
Cleaning And Inspection...7642
HYDRAULIC CONTROL VALVE (AHC)...7643
Removal And Installation...7643
Actuator Removal And Installation...7647
Identification Chart...7648
Lift Base End Restrictor...7649
Load Check Valve...7649
Main Relief Valve...7650
Port Relief Valve...7651
Anti-Cavitation Valve...7652
Plug...7653
Lift Spool Removal And Installation...7654
Tilt Spool Removal And Installation...7655
Lift and Tilt Spool Disassembly And Assembly...7656
Auxiliary Spool Removal And Installation...7657
Auxiliary Electric Solenoid Disassembly...7658
Port-Auxiliary Section Disassembly...7659
Cleaning And Inspection...7659
LIFT ARM BY-PASS CONTROL VALVE...7661
Inspecting...7661
Additional Inspection For Loaders With Advanced Hand Controls...7661
Removal And Installation...7661
Disassembly And Assembly...7662
HYDRAULIC PUMP (ALUMINUM)...7663
Checking The Output Of The Hydraulic Pump...7663
Removal And Installation...7664
Parts Identification...7666
Disassembly And Assembly...7667
Inspection...7669
HYDRAULIC FILTER HOUSING...7671
Removal And Installation...7671
HYDRAULIC FLUID RESERVOIR...7673
Removal And Installation...7673
CONTROL PEDALS...7675
Removal And Installation...7675
Pedal Adjustment...7675
BUCKET POSITION VALVE...7677
Solenoid Removal And Installation...7677
Solenoid Testing...7677
Removal And Installation...7678
Disassembly And Assembly...7679
FRONT AUXILIARY PRESSURE RELIEF BLOCK...7681
Removal And Installation...7681
Disassembly And Assembly...7682
Solenoid Testing...7683
Solenoid Inspection...7683
HYDROSTATIC SYSTEM...7685
HYDROSTATIC SYSTEM INFORMATION...7687
Troubleshooting Chart...7687
Replenishing Valve Function...7688
CONTROL PANEL...7689
Removal and Installation...7689
STEERING...7691
Shock Removal And Installation...7691
Steering Shaft Removal And Installation...7691
Shaft Disassembly And Assembly...7692
Lever Removal And Installation...7693
Rubber Boot Replacement...7693
Linkage Removal And Installation...7694
Linkage Adjustment...7696
Neutral Adjustment...7699
STEERING (ADVANCE HAND CONTROL) (AHC)...7703
Components Identification...7703
Handle Control Unit Removal And Installation...7704
Steering Handle Removal and Installation...7707
Steering Handle Disassembly and Assembly...7707
Lever Removal and Installation...7708
Steering Lever Boot...7708
STEERING (ADVANCED HAND CONTROL) (AHC) W/ PUSH BUTTON FLOAT...7709
Components Identification...7709
Handle Sensor Removal And Installation...7709
Control Handle Removal And Installation...7711
Control Handle Disassembly And Assembly...7712
Control Lever Removal And Installation...7713
Control Lever Boot...7714
HYDROSTATIC MOTOR...7715
Removal And Installation...7715
Parts Identification...7717
Disassembly...7718
Assembly...7723
Carrier Shaft Seal Replacement...7729
Carrier Removal And Installation...7731
HYDROSTATIC MOTOR...7733
Carrier Parts Identification...7733
Carrier Disassembly...7734
Carrier Assembly...7735
CHARGE PRESSURE...7739
Sender Removal And Installation...7739
Checking Charge Pressure...7739
Adjusting...7740
HYDROSTATIC PUMP...7741
Replenishing/High Pressure Relief Valve...7741
Removal And Installation...7742
Parts Identification (Right Half)...7744
Parts Identification (Left Half)...7746
Hydraulic Pump Removal And Installation...7748
Pump Separation...7749
Disassembly...7750
Assembly...7756
DRIVE BELT...7763
Shield Removal And Installation...7763
Adjusting...7764
Drive Belt Replacement...7765
Tensioner Pulley Removal And Installation...7766
Tensioner Pulley Parts Identification...7767
Tensioner Pulley Disassembly...7768
Tensioner Pulley Assembly...7769
OIL COOLER...7771
Removal and Installation...7771
DRIVE SYSTEM...7773
BRAKE...7775
Pedal Removal And Installation...7775
Pedal Disassembly And Assembly...7775
Disc Removal And Installation...7776
DRIVE COMPONENTS...7779
Axle Seal Removal And Installation...7779
Axle Sprocket And Bearings Removal And Installation...7781
Chain Removal And Installation...7786
CHAINCASE...7789
Checking And Adding Oil...7789
Removing The Oil...7789
Front Cover Removal And Installation...7790
Center Cover Removal And Installation...7791
Rear Cover Removal And Installation...7792
MAIN FRAME...7793
SEAT BAR...7795
Removal And Installation...7795
Assembling Components...7797
Compression Spring Disassembly And Assembly...7799
OPERATOR CAB...7801
Gas Cylinder Removal And Installation...7801
Gas Cylinder Disassembly...7803
Removal And Installation...7804
OPERATOR SEAT...7807
Removal And Installation...7807
Slide Rail Removal And Installation...7808
Cushion Removal And Installation...7809
Back Removal And Installation...7810
Shock Removal And Installation...7811
BOB-TACH...7813
Removal And Installation...7813
Bob-Tach Lever And Wedge...7815
Bob-Tach Stops...7816
LIFT ARM...7817
Removal And Installation...7817
REAR GRILL...7823
Gas Cylinder Removal And Installation...7823
Removal And Installation...7824
REAR DOOR...7825
Removal And Installation...7825
Door Latch And Catch Adjustment...7826
Door Latch Removal And Installation...7827
FUEL TANK...7829
Removal And Installation...7829
Fuel Level Sender...7830
ELECTRICAL SYSTEM & ANALYSIS...7831
ELECTRICAL SCHEMATICS...7837
ELECTRICAL SYSTEM INFORMATION...7835
WIRING SCHEMATICS...7835
Troubleshooting Chart...7842
Description...7843
Fuse Location...7844
Relay Switch Location...7844
Solenoid Test...7845
BATTERY...7847
Removal And Installation...7847
Servicing...7848
Using A Booster Battery (Jump Starting)...7849
ALTERNATOR...7851
Adjusting The Alternator Belt...7851
Alternator Output Test...7851
Rectifier (Diode) Test...7852
Alternator Regulator Test...7852
Removal And Installation...7854
Disassembly...7855
Stator Continuity Test...7855
Stator Ground Test...7855
Rotor Continuity Test...7856
Rotor Ground Test...7856
Rectifier Continuity (Diode) Test...7856
Assembly...7857
STARTER...7859
Checking...7859
Removal And Installation...7859
Parts Identification...7860
Disassembly...7861
Inspection And Repair...7866
No Load Test...7869
Assembly...7869
INSTRUMENT PANEL...7879
Left Panel...7879
Right Panel - (Standard) (With Key Switch)...7880
Right Panel - (Deluxe) (With Keyless Start)...7881
Right Panel Setup Display Options (Deluxe)...7883
Passwords...7884
Option and Field Accessory Panels...7886
Removal And Installation...7887
LIGHTS...7889
Front Removal And Installation...7889
Rear Removal And Installation...7890
BOBCAT CONTROLLER...7891
Identification Chart...7891
Removal And Installation...7892
DIAGNOSTICS...7893
Service Codes...7893
BICS™ SYSTEM...7897
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...7897
Inspecting Deactivation Of The Auxiliary Hydraulics...7897
System (Engine STOPPED - Key ON)...7897
Inspecting The Seat Bar Sensor (Engine RUNNING)...7897
Inspecting The Traction Lock (Engine RUNNING)...7897
Inspecting The Lift Arm By-Pass Control...7898
Additional Inspection For Loaders With Advanced...7898
Hand Controls (AHC)...7898
Troubleshooting Chart...7899
Troubleshooting Guide...7900
SEAT BAR SENSOR...7901
Troubleshooting Chart...7901
Test...7902
Removal And Installation...7903
BICS™ Circuit Test...7904
TRACTION LOCK...7905
Troubleshooting Chart...7905
Inspecting...7906
Solenoid Removal And Installation...7906
Guide Removal...7908
Guide Installation...7910
ADVANCED HAND CONTROL (AHC) SYSTEM...7913
Components Identification...7913
ADVANCED HAND CONTROL (AHC) SYSTEM...7914
Troubleshooting Guide...7914
Parts Identification...7915
AHC Controller Removal And Installation...7916
Handle Control Unit Connector...7917
Switch Handle Removal and Installation...7918
Actuators Disassembly and Assembly...7921
ADVANCED HAND CONTROL (AHC) SYSTEM...7923
(W/PUSH BUTTON FLOAT)...7923
Components Identification...7923
Troubleshooting Guide...7924
Controller Connector And Wire Identification...7925
AHC Controller Removal And Installation...7926
Handle Sensor Removal And Installation...7926
Handle Sensor Connector...7928
Switch Handle Removal And Installation...7929
Actuators Disassembly And Assembly...7931
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...7933
Controls Identification Chart...7933
ENGINE SERVICE...7935
TROUBLESHOOTING...7937
Chart...7937
ENGINE SPEED CONTROL...7939
Removal And Installation...7939
Disassembly...7939
MUFFLER...7941
Removal And Installation...7941
Spark Arrestor Cleaning Procedure...7942
AIR CLEANER...7943
Replacing Filter Element(s)...7943
Removal And Installation...7945
RADIATOR...7947
Removal And Installation...7947
COOLING FAN...7949
Drive Tension Pulley Removal And Installation...7949
Gearbox/Blower Housing Removal And Installation...7950
Blower Housing Grill Removal And Installation...7952
Blower Disassembly And Assembly...7952
Gearbox Parts Identification...7954
Gearbox Disassembly...7955
Gearbox Assembly...7960
Gearbox Checking Backlash...7965
ENGINE COMPONENTS AND TESTING...7969
Compression Checking...7969
Glow Plugs Checking...7970
Glow Plugs Removal And Installation...7971
Fuel Shut-Off Solenoid, Checking...7972
Fuel Shut-Off Solenoid, Adjusting...7973
Fuel Shut-Off Solenoid Removal And Installation...7974
Checking...7975
Fuel Injection Pump Removal And Installation...7976
Timing The Injection Pump...7979
Fuel Injector Removal And Installation...7981
Fuel Injector Checking...7983
Fuel Injector Disassembly...7983
Fuel Injector Assembly...7984
Valve Clearance Adjustment...7984
Rocker Arm And Shaft Checking...7985
Valve Timing, Checking...7986
ENGINE...7987
Removal And Installation...7987
Engine Mount Replacement...7993
FLYWHEEL AND HOUSING...7995
Flywheel Removal And Installation...7995
Ring Gear Removal And Installation...7996
Housing Removal And Installation...7997
RECONDITIONING THE ENGINE...7999
Cylinder Head Removal And Installation...7999
Cylinder Head Disassembly And Assembly...8000
Cylinder Head Servicing...8001
Cylinder Head Top Clearance...8001
Checking The Valve Guide...8002
Reconditioning The Valve And Valve Seat...8003
Valve Spring...8004
Rocker Arm And Shaft Checking...8005
Timing Gearcase Cover Removal And Installation...8006
Idler Gear And Camshaft Removal And Installation...8008
Servicing The Camshaft...8009
Servicing The Idler Gear And Shaft...8010
Timing Gears Checking Backlash...8011
Fuel Camshaft Removal And Installation...8012
Fuel Camshaft Governor...8012
Crankshaft Gear Removal And Installation...8013
Oil Pump Removal And Installation...8013
Oil Pump Service...8013
Checking Engine Oil Pressure...8014
Relief Valve...8015
Piston And Connecting Rod Removal And Installation...8015
Servicing The Piston And Connecting Rod...8017
Connecting Rod Alignment...8019
Crankshaft And Bearings Removal And Installation...8020
Servicing The Crankshaft And Bearings...8021
Checking The Cylinder Bore...8025
Water Pump Disassembly And Assembly...8026
HEATER...8027
COMPONENTS...8029
Identification...8029
REGULAR MAINTENANCE...8031
Filter Elements Removal And Installation...8031
BASIC TROUBLESHOOTING...8035
Cleaning The Heater Coil...8035
Checking The Electrical System...8037
Engine Coolant By-Passing The Heater Valve...8042
Heater Valve Not Opening Or Closing...8042
SYSTEM TROUBLESHOOTING CHART...8045
Blower Motor Does Not Operate...8045
Blower motor operators normally, but air flow is insufficient...8045
HEATER UNIT...8047
Removal And Installation...8047
Disassembly And Assembly...8048
HEATER COIL...8049
Removal And Installation...8049
HEATER FAN...8051
Removal And Installation...8051
Disassembly And Assembly...8052
Wire Connector Removal and Installation...8054
HEATER VALVE...8057
Removal and Installation...8057
Disassembly And Assembly...8058
SPECIFICATIONS...8059
LOADER SPECIFICATIONS...8061
Specifications...8061
Performance...8061
Controls...8061
Engine...8062
Hydraulic System...8062
Electrical...8063
Drive System...8063
Capacities...8063
Tires...8063
Floor Pressure...8063
ENGINE SPECIFICATIONS...8065
Fuel Injection Nozzles...8065
Fuel Injection Pump...8065
Cylinder Head...8065
Valves...8065
Valve Springs...8066
Valve Timing...8066
Rocker Arms...8066
Camshaft...8066
Tappet...8066
Cylinders...8067
Piston Rings...8067
Pistons...8067
Connecting Rod...8067
Oil Pump...8067
Crankshaft...8068
Timing Gear...8068
Thermostat...8068
Crankshaft Re-Grind Data...8069
LOADER TORQUE...8071
Specifications...8071
TORQUE SPECIFICATIONS FOR BOLTS...8073
Torque for General SAE Bolts...8073
Torque For General Metric Bolts...8074
HYDRAULIC CONNECTION SPECIFICATIONS...8075
O-ring Face Seal Connection...8075
Straight Thread O-ring Fitting...8075
Tubelines And Hoses...8075
Flare Fitting...8076
O-ring Flare Fitting...8077
Port Seal Fitting...8079
HYDRAULIC FLUID SPECIFICATIONS...8081
Specifications...8081
CONVERSIONS...8083
Decimal And Millimeter Equivalents...8083
U.S. To Metric Conversion...8084
SMR...8085
Revision No: 751-1...8085
Revision No: 751-2...8087
Revision No: 751-3...8089
6900976 (6-12) - 753 (G Series) Service Manual...8091
MAINTENANCE SAFETY...8093
ALPHABETICAL INDEX...8095
CONTENTS...8097
FOREWORD...8098
SAFETY INSTRUCTIONS...8101
Fire Prevention...8103
SERIAL NUMBER LOCATIONS...8105
Loader Serial Number...8105
Engine Serial Number...8105
DELIVERY REPORT...8105
LOADER IDENTIFICATION...8106
SAFETY AND MAINTENANCE...8107
LIFTING AND BLOCKING THE LOADER...8109
Procedure...8109
LIFT ARM SUPPORT DEVICE...8111
Installing Lift Arm Support Device...8111
Removing The Lift Arm Support Device...8112
OPERATOR CAB...8113
Description...8113
Raising The Operator Cab...8113
Lowering The Operator Cab...8114
Emergency Exit...8115
TRANSPORTING THE BOBCAT LOADER...8117
Procedure...8117
TOWING THE LOADER...8119
Procedure...8119
REMOTE START...8121
Procedure...8121
SERVICE SCHEDULE...8125
Chart...8125
AIR CLEANER SERVICE...8127
Checking...8127
Replacing Filter Element(s)...8128
ENGINE COOLING SYSTEM...8131
Cleaning The Cooling System...8131
Checking The Coolant Level...8131
Replacing The Coolant...8132
FUEL SYSTEM...8135
Fuel Specifications...8135
Filling the Fuel Tank...8135
Fuel Filter...8136
Removing Air From The Fuel System...8137
ENGINE LUBRICATION SYSTEM...8139
Checking Engine Oil...8139
Oil Chart...8139
Replacing Oil And Filter...8139
HYDRAULIC/HYDROSTATIC SYSTEM...8141
Checking And Adding Fluid...8141
Replacing Hydraulic/Hydrostatic Filter...8141
Replacing Hydrostatic Motor Case Drain Filter(s)...8142
Replacing Hydraulic Fluid...8143
Breather Cap...8144
FINAL DRIVE TRANSMISSION (CHAINCASE)...8145
Checking And Adding Oil...8145
Removing The Oil...8145
FAN GEARBOX...8147
Checking And Maintaining...8147
BOB-TACH...8149
Inspection And Maintenance...8149
POWER BOB-TACH...8151
Inspection And Maintenance...8151
LUBRICATION OF THE BOBCAT LOADER...8153
Procedure...8153
TIRE MAINTENANCE...8157
Wheel Nuts...8157
Rotating...8157
Mounting...8157
SPARK ARRESTOR MUFFLER...8159
Servicing...8159
HYDRAULIC SYSTEM...8161
HYDRAULIC/HYDROSTATIC SCHEMATICS...8165
HYDRAULIC SYSTEM INFORMATION...8169
Glossary Of Hydraulic/Hydrostatic Symbols...8169
Tighten Procedures...8173
Troubleshooting Chart...8174
CYLINDER (LIFT)...8175
Checking...8175
Removal And Installation...8176
Identification...8177
Disassembly...8178
Assembly...8179
CYLINDER (TILT)...8183
Checking...8183
Removal And Installation...8183
Rod End Pivot Pin Bushing And Seal Replacement...8185
Identification...8186
Disassembly...8187
Assembly...8188
CYLINDER (POWER BOB-TACH)...8191
Checking...8191
Removal And Installation...8192
Parts Identification...8193
Disassembly...8194
Assembly...8195
MAIN RELIEF VALVE...8199
Checking...8199
Adjustment...8200
Removal and Installation...8201
HYDRAULIC CONTROL VALVE (FOOT CONTROL)...8203
Removal And Installation (S/N 515840211 & Below)...8203
Removal And Installation (S/N 515840212 & Above)...8207
BICS™ Valve Removal And Installation...8212
BICS™ Valve Lift Arm By-Pass Orifice Disassembly And Assembly...8213
BICS™ Valve Check Valve Disassembly And Assembly...8214
BICS™ Valve Lock Valve Disassembly And Assembly...8215
BICS™ Valve Solenoid Disassembly And Assembly...8216
BICS™ Valve Solenoid Testing...8217
Identification Chart...8218
Lift Base End Restrictor...8219
Load Check Valves...8219
Main Relief Valve...8220
Port Relief Valve...8221
Anti-Cavitation Valve...8221
Plug...8222
Rubber Boot...8223
Lift And Tilt Lock Block Removal And Installation...8224
Lift Spool and Detent...8225
Tilt Spool Removal And Installation...8234
Auxiliary Spool Removal And Installation...8236
Auxiliary Electric Solenoid Disassembly...8236
Port-Auxiliary Section Disassembly...8237
Cleaning And Inspection...8238
HYDRAULIC CONTROL VALVE (ADVANCED CONTROL SYSTEM) (ACS)...8239
Description...8239
Removal And Installation (S/N 515840211 & Below)...8239
Removal And Installation (S/N 515840212 & Above)...8242
Actuator Removal And Installation...8246
BICS™ Valve, Removal And Installation...8247
BICS™ Valve, Lift Arm By-Pass Orifice Removal and Installation...8248
BICS™ Valve, Check Valve Removal and Installation...8249
BICS™ Valve, Lock Valve Removal and Installation...8250
BICS™ Valve, Solenoid Removal and Installation...8251
BICS™ Valve, Solenoid Testing...8252
Identification Chart (AHC)...8253
Identification Chart (ACS)...8254
Lift Base End Restrictor...8255
Load Check Valve...8255
Main Relief Valve...8256
Port Relief Valve...8257
Anti-Cavitation Valve/Port Relief Valve...8258
Anti-Cavitation Valve...8259
Lift Spool Removal And Installation...8260
Tilt Spool Removal And Installation...8261
Lift And Tilt Spool Disassembly And Assembly...8262
Auxiliary Spool Removal And Installation...8263
Auxiliary Electric Solenoid...8264
Port-Auxiliary Section...8265
Cleaning And Inspection...8265
LIFT ARM BY-PASS CONTROL VALVE...8267
Inspecting...8267
Removal And Installation...8267
Disassembly And Assembly...8268
HYDRAULIC PUMP (ALUMINUM)...8269
Checking The Output Of The Hydraulic Pump...8269
Removal And Installation...8270
Parts Identification...8272
Disassembly And Assembly...8273
Inspection...8275
HYDRAULIC PUMP (CAST IRON)...8277
Check The Output Of The Hydraulic Pump Without Power Bob-Tach...8277
Check The Output Of The Hydraulic Pump With Power Bob-Tach...8279
Removal And Installation...8281
Identification...8285
Disassembly And Assembly...8286
HYDRAULIC/HYDROSTATIC FILTER...8291
Housing Removal And Installation...8291
HYDRAULIC FLUID RESERVOIR...8293
Removal And Installation...8293
BUCKET POSITION VALVE...8295
Solenoid Removal And Installation...8295
Solenoid Testing...8295
Removal And Installation...8296
Disassembly And Assembly...8297
REAR AUXILIARY DIVERTER VALVE (SINGLE SHUTTLE)...8301
Removal And Installation...8301
Disassembly...8303
Inspection...8304
Solenoid Testing...8304
Assembly...8304
REAR AUXILIARY DIVERTER VALVE (DUAL SHUTTLE)...8305
Removal And Installation...8305
Disassembly And Assembly...8308
Solenoid Testing...8311
Inspection...8311
POWER BOB-TACH BLOCK...8313
Removal And Installation...8313
Disassembly And Assembly...8314
FRONT AUXILIARY PRESSURE RELIEF BLOCK...8323
Removal And Installation (S/N 515842309 and Below)...8323
Disassembly And Assembly (S/N 515842309 and Below)...8324
Solenoid Testing...8325
Solenoid Inspection...8325
FRONT AUXILIARY HYDRAULIC COUPLER BLOCK...8327
Removal and Installation (S/N 515842310 & Above)...8327
Disassembly And Assembly...8327
HYDROSTATIC SYSTEM...8329
HYDROSTATIC SYSTEM INFORMATION...8331
Troubleshooting Chart...8331
Replenishing Valve Function...8332
HYDROSTATIC MOTOR...8333
Removal And Installation...8333
Parts Identification...8335
Disassembly...8336
Assembly...8341
Carrier Shaft Seal Replacement...8347
Carrier Removal And Installation...8349
Carrier Parts Identification...8351
Carrier Disassembly...8352
Carrier Assembly...8353
CHARGE PRESSURE...8357
Sender Removal And Installation...8357
Checking Charge Pressure...8357
Adjusting...8358
HYDROSTATIC PUMP...8359
Replenishing/High Pressure Relief Valve...8359
Removal And Installation...8360
Parts Identification (Right Half)...8362
Parts Identification (Left Half)...8364
Hydraulic Pump Removal And Installation...8366
Pump Separation...8366
Disassembly...8367
Assembly...8373
DRIVE BELT...8381
Shield Removal And Installation...8381
Adjusting...8381
Drive Belt Replacement...8382
Tensioner Pulley Removal And Installation...8384
Tensioner Pulley Parts Identification...8385
Tensioner Pulley Disassembly...8386
Tensioner Pulley Assembly...8387
OIL COOLER...8389
Removal and Installation...8389
DRIVE SYSTEM...8391
BRAKE...8393
Pedal Removal And Installation (S/N 515834999 & Below)...8393
Pedal Disassembly And Assembly...8393
Disc Removal And Installation...8394
Switch Operated Parking Brake (S/N 515835000 & Above)...8395
DRIVE COMPONENTS...8397
Axle Seal Removal And Installation...8397
Axle Sprocket And Bearings Removal And Installation...8399
Chain Removal And Installation...8404
CHAINCASE...8407
Checking And Adding Oil...8407
Removing The Oil...8407
Front Cover Removal And Installation...8408
Center Cover Removal And Installation...8409
Rear Cover Removal And Installation...8410
MAIN FRAME...8411
SEAT BAR...8415
Removal And Installation...8415
Assembling Components...8417
Compression Spring Disassembly And Assembly...8419
OPERATOR CAB...8421
Gas Cylinder Removal And Installation...8421
Gas Cylinder Disassembly...8423
Removal And Installation...8423
OPERATOR SEAT...8427
Removal And Installation...8427
Seat Belt Removal And Installation...8427
OPERATOR SEAT (SUSPENSION)...8429
Removal And Installation...8429
Slide Rail Removal And Installation...8430
Cushion Removal And Installation...8430
Back Removal And Installation...8431
Shock Removal And Installation...8432
BOB-TACH...8433
Removal And Installation...8433
Bob-Tach Lever And Wedge...8435
Bob-Tach Stops...8436
POWER BOB-TACH...8437
Removal And Installation...8437
Power Bob-Tach Lever And Wedge...8438
LIFT ARM...8441
Removal And Installation...8441
REAR GRILL...8447
Gas Cylinder Removal And Installation...8447
Removal And Installation...8448
REAR DOOR...8449
Removal And Installation...8449
Striker Removal and Installation...8450
Striker Disassembly and Assembly...8450
Door Latch and Catch Adjustment...8451
Latch Removal and Installation (S/N 515840618 & Below)...8452
Latch Removal and Installation (S/N 515840619 & Above)...8452
FUEL TANK...8453
Removal And Installation...8453
Fuel Level Sender...8454
CONTROL PEDALS...8455
Removal And Installation...8455
Pedal Adjustment...8455
Crossbar Linkage Removal And Installation...8456
Lift Foot Pedal Linkage Removal And Installation...8457
Tilt Foot Pedal Linkage Removal And Installation...8457
CONTROL PEDALS (ACS)...8459
Foot Sensor Removal And Installation...8459
Foot Pedal Removal And Installation...8460
Foot Pedal Linkage Disassembly And Assembly...8460
CONTROL PANEL...8461
Removal and Installation...8461
CONTROL HANDLE...8465
Shock Removal And Installation...8465
Shaft Removal And Installation...8465
Shaft Disassembly And Assembly...8465
Lever Removal And Installation...8466
Rubber Boot Replacement...8466
Linkage Removal And Installation...8467
Linkage Adjustment...8469
Linkage Neutral Adjustment...8472
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)...8475
Components Identification...8475
Handle Control Unit Removal And Installation...8476
Control Handle Removal And Installation...8479
Control Handle Disassembly And Assembly...8479
Control Lever Removal And Installation...8480
Control Lever Boot...8481
CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC) W/PUSH BUTTON FLOAT...8483
Components Identification...8483
Handle Sensor Removal And Installation...8483
Control Handle Removal And Installation...8485
Control Handle Disassembly And Assembly...8486
Control Lever Removal And Installation...8487
Control Lever Boot...8488
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) ADVANCED HAND CONTROL...8489
Components Identification...8489
Handle Sensor Removal And Installation...8489
Control Handle Removal and Installation...8493
Control Handle Disassembly and Assembly...8494
Control Lever Removal and Installation...8494
Control Lever Boot...8495
CONTROL HANDLE (ADVANCED CONTROL SYSTEM) (ACS) SELECTABLE HAND/FOOT CONTROL...8497
Components Identification...8497
Handle Sensor Removal And Installation...8497
Control Handle Removal and Installation...8501
Control Handle Disassembly and Assembly...8502
Control Lever Removal and Installation...8502
Control Lever Boot...8503
ELECTRICAL SYSTEM & ANALYSIS...8505
ELECTRICAL SCHEMATICS...8509
ELECTRICAL SYSTEM INFORMATION...8521
Troubleshooting Chart...8523
Description...8524
Fuse Location...8525
Relay Switch Location...8526
Solenoid Test...8526
BATTERY...8527
Removal And Installation...8527
Servicing...8528
Using A Booster Battery (Jump Starting)...8529
ALTERNATOR (55 AMP)...8531
Adjusting The Alternator Belt...8531
Alternator Output Test...8531
Rectifier (Diode) Test...8532
Alternator Regulator Test...8532
Removal And Installation...8534
Disassembly...8535
Stator Continuity Test...8535
Stator Ground Test...8535
Rotor Continuity Test...8536
Rotor Ground Test...8536
Rectifier Continuity (Diode) Test...8536
Assembly...8537
ALTERNATOR (90 AMP)...8539
Adjusting The Alternator Belt...8539
Alternator Identification...8539
Charging System Check...8540
Alternator Voltage Test...8541
Low Voltage Test...8541
High Voltage Test...8542
Removal And Installation...8543
Rectifier Continuity (Diode) Test...8544
Alternator Regulator Test...8545
Disassembly...8545
Stator Continuity Test...8546
Stator Ground Test...8546
Rotor Continuity Test...8546
Rotor Ground Test...8546
Assembly...8547
STARTER (NIPPONDENSO)...8549
Checking...8549
Removal And Installation...8549
Parts Identification...8551
Disassembly...8552
Inspection And Repair...8557
No Load Test...8560
Assembly...8560
STARTER (VALEO)...8567
Checking...8567
Removal And Installation...8568
Parts Identification...8569
Disassembly and Assembly...8570
Inspection And Repair...8573
No Load Test...8575
INSTRUMENT PANEL...8577
Left Panel...8577
Right Panel - (Standard) (With Key Switch)...8578
Right Panel - (Deluxe) (With Keyless Start)...8579
Right Panel Setup Display Options (Deluxe)...8581
Passwords...8582
Option and Field Accessory Panels...8584
Removal And Installation...8585
Front Accessory Panel Removal And Installation...8586
LIGHTS...8587
Front Removal And Installation...8587
Rear Removal And Installation...8588
BOBCAT CONTROLLER...8589
Identification Chart (S/N 515843086 & Below)...8589
Identification Chart (S/N 515843087 & Above)...8590
Removal And Installation...8592
DIAGNOSTICS...8593
Service Codes...8593
BICS™ SYSTEM...8597
Inspecting The BICS™ Controller (Engine STOPPED - Key ON)...8597
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED - Key ON)...8597
Inspecting The Seat Bar Sensor (Engine RUNNING)...8597
Inspecting The Traction Lock (Engine RUNNING)...8597
Inspecting The Lift Arm By-Pass Control...8598
Additional Inspection For Loaders With Advanced Hand Controls (AHC)...8598
Troubleshooting Chart...8599
Troubleshooting Guide...8600
SEAT BAR SENSOR...8601
Troubleshooting Chart...8601
Test...8602
Removal And Installation...8603
BICS™ Circuit Test...8604
TRACTION LOCK...8605
Troubleshooting Chart...8605
Inspecting...8606
Solenoid Removal And Installation...8606
Guide Removal...8608
Guide Installation...8610
ADVANCED HAND CONTROL (AHC) SYSTEM...8613
Components Identification...8613
Troubleshooting Guide...8614
Parts Identification...8615
AHC Controller Removal And Installation...8616
Control Handle Unit Connector...8616
Switch Handle Removal and Installation...8617
Actuators Disassembly And Assembly...8620
ADVANCED HAND CONTROL (AHC) SYSTEM (W/ PUSH BUTTON FLOAT)...8623
Components Identification...8623
Troubleshooting Guide...8624
Controller Connector And Wire Identification...8625
AHC Controller Removal And Installation...8626
Handle Sensor Removal And Installation...8626
Handle Sensor Connector...8628
Switch Handle Removal And Installation...8629
Actuators Disassembly And Assembly...8631
ADVANCED CONTROL SYSTEM (ACS) ADVANCED HAND CONTROL...8633
Components Identification...8633
Troubleshooting Guide...8634
Controller, Connector And Wire Identification...8635
ACS Controller Removal And Installation...8636
Handle Sensor Connector...8636
Switch Handle Removal...8637
Switch Handle Installation...8639
Actuators Disassembly And Assembly...8642
ADVANCED CONTROL SYSTEM (ACS) SELECTABLE HAND/FOOT CONTROL...8643
Components Identification...8643
Troubleshooting Guide...8645
Controller, Connector And Wire Identification...8646
ACS Controller Removal And Installation...8647
Handle Sensor Connector...8647
Switch Handle Removal...8648
Switch Handle Installation...8650
Actuators Disassembly And Assembly...8653
Handle Lock Solenoid Removal And Installation...8654
Handle Lock Solenoid Disassembly And Assembly...8654
Handle Lock Solenoid Connector...8655
Calibration Of The ACS System...8656
Switchable Hand/Foot Controls Calibration Procedure...8656
Hand Controls Only Calibration Procedure...8657
Foot Sensor Disassembly And Assembly...8659
Foot Sensor Connector...8659
Foot Lock Solenoid Removal And Installation...8660
Foot Lock Solenoid Connector...8660
ELECTRICAL/HYDRAULIC CONTROLS REFERENCE...8663
Controls Identification Chart...8663
ENGINE SERVICE...8665
TROUBLESHOOTING...8667
Chart...8667
ENGINE SPEED CONTROL...8669
Removal And Installation...8669
Disassembly...8669
MUFFLER...8671
Removal And Installation...8671
AIR CLEANER...8673
Removal And Installation...8673
RADIATOR...8675
Removal And Installation...8675
COOLING FAN...8677
Drive Tension Pulley Removal And Installation...8677
Gearbox/Blower Housing Removal And Installation...8678
Blower Housing Grill Removal And Installation...8680
Blower Disassembly And Assembly...8680
Gearbox Parts Identification...8682
Gearbox Disassembly...8683
Gearbox Assembly...8688
Gearbox Checking Backlash...8692
ENGINE COMPONENTS AND TESTING...8697
Compression Checking...8697
Glow Plugs Checking...8698
Glow Plugs Removal And Installation...8698
Fuel Shut-Off Solenoid Checking...8699
Fuel Shut-Off Solenoid Adjusting...8699
Fuel Shut-Off Solenoid Removal And Installation...8700
Checking...8701
Fuel Injection Pump Removal And Installation...8702
Timing The Injection Pump...8705
Fuel Injector Removal And Installation...8706
Fuel Injector Checking...8708
Fuel Injector Disassembly...8708
Fuel Injector Assembly...8709
Valve Clearance Adjustment...8709
Rocker Arm And Shaft Checking...8710
Valve Timing Checking...8710
ENGINE...8711
Removal And Installation...8711
Engine Mount Replacement...8716
FLYWHEEL AND HOUSING...8717
Flywheel Removal And Installation...8717
Ring Gear Removal And Installation...8718
Housing Removal And Installation...8718
RPM SENSOR...8721
Adjustment...8721
RECONDITIONING THE ENGINE...8723
Cylinder Head Removal And Installation...8723
Cylinder Head Disassembly And Assembly...8724
Cylinder Head Servicing...8725
Cylinder Head Top Clearance...8725
Checking The Valve Guide...8726
Reconditioning The Valve And Valve Seat...8727
Valve Spring...8728
Rocker Arm And Shaft Checking...8728
Timing Gearcase Cover Removal And Installation...8729
Idler Gear And Camshaft Removal And Installation...8731
Servicing The Camshaft...8732
Servicing The Idler Gear And Shaft...8733
Timing Gears Checking Backlash...8734
Fuel Camshaft Removal And Installation...8734
Fuel Camshaft Governor...8735
Crankshaft Gear Removal And Installation...8735
Oil Pump Removal And Installation...8736
Oil Pump Service...8736
Checking Engine Oil Pressure...8737
Relief Valve...8737
Piston And Connecting Rod Removal And Installation...8738
Servicing The Piston And Connecting Rod...8739
Connecting Rod Alignment...8741
Crankshaft And Bearings Removal And Installation...8742
Servicing The Crankshaft And Bearings...8743
Checking The Cylinder Bore...8746
Water Pump Disassembly And Assembly...8747
HEATER...8749
COMPONENTS...8751
Identification...8751
REGULAR MAINTENANCE...8753
Filter Elements Removal And Installation...8753
BASIC TROUBLESHOOTING...8757
Cleaning The Heater Coil...8757
Checking The Electrical System...8759
Engine Coolant By-Passing The Heater Valve...8764
Heater Valve Not Opening Or Closing...8764
SYSTEM TROUBLESHOOTING CHART...8767
Blower Motor Does Not Operate...8767
Blower motor operators normally, but air flow is insufficient...8767
HEATER UNIT...8769
Removal And Installation...8769
Disassembly And Assembly...8770
HEATER COIL...8771
Removal And Installation...8771
HEATER FAN...8773
Removal And Installation...8773
Disassembly And Assembly...8774
Wire Connector Removal and Installation...8776
HEATER VALVE...8779
Removal and Installation...8779
Disassembly And Assembly...8780
SPECIFICATIONS...8781
LOADER SPECIFICATIONS (753)...8783
Machine Dimensions...8783
Performance...8784
Controls...8784
Engine...8784
Hydraulic System...8785
Electrical...8786
Drive System...8786
Capacities...8787
Tires...8787
ENGINE SPECIFICATIONS...8789
Fuel Injection Nozzles...8789
Fuel Injection Pump...8789
Cylinder Head...8789
Valves...8789
Valve Springs...8790
Valve Timing...8790
Rocker Arms...8790
Camshaft...8790
Tappet...8790
Cylinders...8791
Piston Rings...8791
Pistons...8791
Connecting Rod...8791
Oil Pump...8791
Crankshaft...8792
Timing Gear...8792
Thermostat...8792
Crankshaft Re-Grind Data...8793
TORQUE SPECIFICATIONS FOR BOLTS...8795
Torque For General SAE Bolts...8795
Torque For General Metric Bolts...8796
Torque For Kubota Metric Bolts...8796
HYDRAULIC CONNECTION SPECIFICATIONS...8797
O-ring Face Seal Connection...8797
Straight Thread O-ring Fitting...8798
Tubelines And Hoses...8798
Flare Fitting...8798
O-ring Flare Fitting...8799
Port Seal Fitting...8801
HYDRAULIC FLUID SPECIFICATIONS...8803
Specifications...8803
CONVERSIONS...8805
Decimal And Millimeter Equivalents...8805
U.S. To Metric Conversion...8805
SMR...8807
Revision No: 753-1...8807
Revision No: 753-2...8809
Revision No: 753-3...8811
Revision No: 753-4...8815
Bobcat Loaders 751, 753, 753 High Flow, 753 (G Series) Repair Service Manuals