Complete workshop repair service manual with electrical wiring diagrams for Caterpillar Excavators 320D, 320D L, 323D. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Caterpillar Excavators Caterpillar Excavators 320D, 320D L, 323D service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

MANUAL LIST:
KENR6098 - Schematic (320D Excavator Hydraulic System - Attachment)
KENR6099 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)
KENR6113 - Schematic (320D Excavator Hydraulic System - Attachment)
KENR6115 - Schematic (320D Excavator Hydraulic System - Attachment)
KENR6118 - Schematic (320D Excavator Electrical System)
KENR6119 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)
KENR6120 - Schematic (323D Excavator Hydraulic System - Attachment)
KENR6121 - Schematic (323D Excavator Hydraulic System - Attachment)
KENR6122 - Schematic (320D, 321D, 323D, 324D, 325D, 329D, 330D, 336D, 336D2, 336D MHPU Excavator Hydraulic System - Attachment)
KENR6123 - Schematic (323D Excavator Hydraulic System - Attachment)
KENR8645 - Schematic (320D, 322D, 323D, 324D, 325D, 329D, 330D, 336D2 & 340D2 Excavator Electrical System)
RENR7149 - Schematic (320D & 323D Excavator Hydraulic System - Attachment)
RENR7156 - Schematic (320D and 323D Excavator Hydraulic System)
RENR7157 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)
RENR7244 - Schematic (323D Excavator Hydraulic System - Attachment)
RENR7293 - Specifications (320D and 323D Excavators Machine System Specifications)
RENR7294 - Systems Operation (320D and 323D Excavators Hydraulic System)
RENR7295 - Testing and Adjusting (320D and 323D Excavators Hydraulic System)
RENR7296 - Schematic (320D and 320D L Excavator Hydraulic System)
RENR7404 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)
RENR7439 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)
RENR7500 - Disassembly & Assembly (323D Excavator Machine Systems)
RENR8614 - Disassembly and Assembly (320D Excavator Machine Systems)
RENR8650 - Disassembly and Assembly (320D Excavator C6.4 Engine Supplement)
RENR9104 - Schematic (320D Excavator Hydraulic System - Attachment)
RENR9107 - Schematic (320D Excavator Hydraulic System - Attachment)
RENR9209 - Disassembly and Assembly (323D Excavator 3066 Engine Supplement)
RENR9896 - Schematic (323D Excavator Hydraulic System)
RENR9897 - Schematic (323D Excavator Electrical System)
RENR9972 - Schematic (323D Excavator Hydraulic System - Attachment)
RENR9998 - Schematic (323D Excavator Hydraulic System - Attachment)
SEBP4874 - Parts Manual (320D & 320D L Excavators)
SENR5664 - Disassembly & Assembly (Air Conditioning & Heating R134a for All Caterpillar Machines)
SENR5664 - Specifications (Air Conditioning & Heating R134a for All Caterpillar Machines)
SENR5664 - Systems Operation (Air Conditioning & Heating R134a for All Caterpillar Machines)
SENR5664 - Testing & Adjusting (Air Conditioning & Heating R134a for All Caterpillar Machines)
SENR5664 - Troubleshooting (Air Conditioning & Heating R134a for All Caterpillar Machines)
SENR6572 - Disassembly & Assembly (Zexel Fuel System)
UENR2514 - Schematic (320D Excavator Hydraulic System - Attachment)
UENR3685 - Schematic (320D Excavator Electrical System)
UENR5820 - Schematic (320D Excavator Electrical System)
KENR6122 - Schematic (320D, 321D, 323D, 324D, 325D, 330D Excavator Hydraulic System - Attachment).pdf
SENR6572 - Systems Operations (Zexel Fuel System).pdf
SENR6572 - Testing & Adjusting (Zexel Fuel System).pdf
...

EXCERPT:
Auxiliary Pilot Valve (Straight Travel) - Disassemble
Disassembly Procedure
Start By:
a. Remove the auxiliary pilot control valve. Refer to Disassembly and Assembly, "Auxiliary Pilot Valve (Straight Travel) - Remove".
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will prevent dirt from entering the internal mechanism.
Note: During the disassembly of the auxiliary pilot control valve, put identification marks on each component for assembly purposes.
1. Remove bellows (1) from the pilot valve.
...
Fuel Pump Housing
SMCS - 1253-015; 1253-016
Disassemble Fuel Injection Pump Housing
Start By:
a. separate governor from fuel injection pump housing
NOTE: Clean the outside of the fuel injection pump before disassembly and drain the pump camshaft chamber.
1. Remove three nuts (1) and washers.
2. Remove fuel priming and transfer pump (2). For details on disassembly and assembly of the fuel priming and transfer pump see the topic "Disassemble and Assemble Fuel Priming and Transfer Pump" in this module.

KENR6098 - Schematic (320D Excavator Hydraulic System - Attachment)....1
  Collage....2
  Main....17
KENR6099 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)....26
  Collage....27
  Main....42
KENR6113 -  Schematic (320D Excavator Hydraulic System - Attachment)....52
  Collage....53
  Main....68
KENR6115 - Schematic (320D Excavator Hydraulic System - Attachment)....78
  Collage....79
  Main....94
KENR6118 - Schematic (320D Excavator Electrical System)....107
  Collage....108
  Main....133
KENR6119 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)....135
  Collage....136
  Main....151
KENR6120 - Schematic (323D Excavator Hydraulic System - Attachment)....153
  Collage....154
  Main....169
KENR6121 - Schematic (323D Excavator Hydraulic System - Attachment)....180
  Collage....181
  Main....196
KENR6122 - Schematic (320D, 321D, 323D, 324D, 325D, 329D, 330D, 336D, 336D2, 336D MHPU Excavator Hydraulic System - Attachment)....207
  Collage....208
  Main....220
KENR6122 - Schematic (320D, 321D, 323D, 324D, 325D, 330D Excavator Hydraulic System - Attachment)....232
KENR6123 - Schematic (323D Excavator Hydraulic System - Attachment)....234
  Collage....235
  Main....250
KENR8645 - Schematic (320D, 322D, 323D, 324D, 325D, 329D, 330D, 336D2 & 340D2 Excavator Electrical System)....262
  Collage....263
  Main....271
RENR7149 - Schematic (320D & 323D Excavator Hydraulic System - Attachment)....279
  Collage....280
  Main....295
RENR7156 - Schematic (320D and 323D Excavator Hydraulic System)....305
  Collage....306
  Main....321
RENR7157 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)....332
  Collage....333
  Main....363
RENR7244 - Schematic (323D Excavator Hydraulic System - Attachment)....372
  Collage....373
  Main....388
RENR7293 - Specifications (320D and 323D Excavators Machine System)....390
  Accumulator (Pilot)....397
  Air Cleaner - Precleaner....409
  Air Conditioner Lines....412
  Auxiliary Hydraulic Lines - 2.92 m (9.580 ft) Stick for Medium Flow....446
  Auxiliary Hydraulic Lines - 3.9 m (12.80 ft) Stick with Quick Coupler....449
  Auxiliary Hydraulic Lines - Coupler Lines for Reach Boom....451
  Auxiliary Hydraulic Lines - Mass Boom for Medium Pressure....454
  Auxiliary Hydraulic Lines - Mass Boom with Quick Coupler....457
  Auxiliary Hydraulic Lines - Quick Coupler....460
  Auxiliary Hydraulic Lines - Right Boom for Medium Pressure....463
  Auxiliary Hydraulic Lines - Stick....467
  Auxiliary Hydraulic Lines....472
  Boom - 2.421 m (7.9429 ft)....480
  Boom - 3.3 m (10.83 ft)....483
  Boom - 5.200 m (17.0604 ft)....486
  Boom - 5.675 m (18.6188 ft)....490
  Boom - 5.7 m (18.70 ft)....492
  Boom - 6.02 m (19.751 ft)....497
  Boom - 8.85 m (29.035 ft)....500
  Boom Cylinder ....509
  Boom Cylinder Lines - Boom Lowering Control....512
  Boom Cylinder Lines - Left Hand....520
  Boom Cylinder Lines - Load Control Valve....525
  Boom Cylinder Lines - Right Hand....527
  Boom Cylinder Lines....530
  Boom Cylinder....550
  Boom Lines - Coupler Lines for Reach Boom....570
  Boom Lines - Fore....574
  Boom Lines....576
  Bucket - Side Bar Protector....590
  Bucket Adjuster....592
  Bucket Cylinder ....598
  Bucket Cylinder Lines....601
  Bucket Cylinder....640
  Bucket Linkage - B1 Family....694
  Bucket Linkage - CB2 Family....705
  Bucket Linkage....711
  Bucket Sidecutter....723
  Cab - Air Duct....733
  Cab - Internal....736
  Cab - Protection Visor....739
  Cab - Window Guard....741
  Cab....743
  Chassis Lighting....754
  Check Valve (Return Lines)....756
  Check Valve (Stick Drift Reduction)....767
  Check Valve....769
  Circuit Breakers....772
  Communication Electronic Control Module (Product Link)....776
  Control Manifold (Pilot Oil)....781
  Control Valve (Auxiliary) - Medium Pressure....789
  Control Valve (Auxiliary)....792
  Control Valve (Boom Lowering)....802
  Control Valve (Stick Lowering)....808
  Control Valve - Boom Cylinder Load....816
  Control Valve....819
  Counterweight....825
  Drain Line (Muffler)....842
  Drain Line (Work Tool)....848
  Engine Mounting....850
  Fasteners - Swing Drive and Final Drive....855
  Final Drive....863
  Front Idler....896
  Front Lines - Combined Function....902
  Front Lines - Medium Pressure....905
  Front Lines - Single Function....909
  Front Lines - Universal Quick Coupler....911
  Front Lines - Variable Adjustable Boom....913
  Front Lines....917
  Fuel Filter Mounting....952
  Fuel Lines....954
  Fuel Tank and Mounting....976
  Fuel Tank....980
  Governor Control....995
  Grease Lines....1000
  Handle Control (Travel)....1011
  Handrail....1014
  Heater Lines....1017
  Heater and Air Conditioner Mounting....1022
  Hoist Solenoid Valve - Pilot Lines....1029
  Hoist Solenoid Valve - Straight Travel....1032
  Hoist Solenoid Valve....1034
  Hood....1038
  Hydraulic Control (Auxiliary Pedal)....1042
  Hydraulic Oil Cooler Lines Group....1044
  Hydraulic Pedal Control (Auxiliary)....1046
  Hydraulic Pedal Control (Straight Travel)....1059
  Hydraulic Tank Mounting....1068
  Hydraulic Tank and Filter....1073
  Joystick Control....1091
  Main Control Valve....1101
  Main Hydraulic Pump....1172
  Manifold and Reducing Valve (Pilot Oil)....1178
  Oil Filter (Hydraulic) - Case Drain....1181
  Oil Filter (Hydraulic)....1186
  Oil Filter (Return)....1191
  Operator Console....1195
  Operator Monitor....1201
  Operator Platform....1208
  Pilot Lines - Boom Float....1211
  Pilot Lines - Control Valve....1214
  Pilot Lines - Filter and Pilot Pump....1231
  Pilot Lines - Heavy Lift....1234
  Pilot Lines - Joystick and Pedals....1241
  Pilot Lines - Main Control Valve....1243
  Pilot Lines - Pedal Controls....1259
  Pilot Lines - Stick....1263
  Pilot Lines - Third Pedal and Pilot Valve....1268
  Pilot Lines....1271
  Pilot Oil Filter and Relief Valve....1307
  Pilot Valve (Auxiliary)....1310
  Pilot Valve (Boom Drift Reduction)....1314
  Pilot Valve (Joystick)....1316
  Pilot Valve (One Way)....1329
  Pilot Valve (Stick Drift Reduction)....1331
  Pilot Valve (Travel)....1333
  Pilot Valve....1346
  Pressure Reducing Valve (Boom Priority)....1350
  Pressure Reducing Valve (Boom and Stick Priority)....1355
  Pump Coupling - Auxiliary Pump....1362
  Pump Coupling....1365
  Pump Head (Main) - Drive....1373
  Pump Head (Main) - Driven....1379
  Pump Lines (Auxiliary) - Medium Pressure....1385
  Pump Lines (Main) - and Hydraulic Oil Cooler Lines....1388
  Pump Lines (Main)....1391
  Pump Lines - Cooler, Pilot Oil....1395
  Pump Lines....1398
  Quick Coupler (Spindle)....1407
  Quick Coupler Valve....1409
  Recoil Spring....1412
  Refrigerant Compressor Mounting....1414
  Refrigerant Compressor....1417
  Refrigerant Condenser and Mounting....1420
  Relief Valve (Crossover)....1422
  Relief Valve (Line)....1424
  Relief Valve (Main) - Heavy Lift....1425
  Relief Valve (Main)....1431
  Relief Valve (Negative Flow Control) - Auxiliary, Combined Function....1450
  Relief Valve (Pilot) - Front Lines....1453
  Relief Valve (Pilot)....1456
  Relief Valve - 1 Way or 2 Way Flow....1461
  Return Lines (Boom Lowering Control)....1463
  Return Lines - Hydraulic Tank....1467
  Rollover Protective Structure (ROPS) Mounting....1474
  Seat Belt....1476
  Selector Valve (Control Pattern Change)....1480
  Sensor Lines (Overload Warning)....1482
  Shuttle Valve (Pilot Lines)....1486
  Shuttle Valve (Pump Flow Control)....1492
  Solenoid Valve (Grapple)....1502
  Solenoid Valve (Proportional Reducing)....1504
  Solenoid Valve (Quick Coupler)....1512
  Solenoid Valve (Swing Motor)....1517
  Solenoid Valve (Work Tool) - Relief....1521
  Solenoid Valve (Work Tool, 4-Function)....1523
  Sprocket....1526
  Stick - 1.900 m (6.2336 ft)....1531
  Stick - 2.400 m (7.8740 ft)....1534
  Stick - 2.5 m (8.20 ft)....1538
  Stick - 2.9 m (9.51 ft)....1548
  Stick - 2.92 m (9.580 ft)....1554
  Stick - 2.920 m (9.5801 ft)....1558
  Stick - 3.86 m (12.664 ft)....1574
  Stick - 6.28 m (20.604 ft)....1577
  Stick - 6.280 m (20.6037 ft)....1583
  Stick Cylinder ....1586
  Stick Cylinder Lines - Stick Lowering Control....1589
  Stick Cylinder Lines....1596
  Stick Cylinder....1610
  Stick Lines - Quick Coupler....1654
  Stick Lines....1658
  Stick....1667
  Swing Cushion Valve - Fine Swing....1670
  Swing Cushion Valve....1678
  Swing Drive - Without Motor....1681
  Swing Drive Mounting....1685
  Swing Drive....1688
  Swing Gear and Bearing....1699
  Swing Motor ....1709
  Swing Motor....1713
  Swivel....1725
  Track Adjuster and Recoil....1728
  Track Adjuster....1733
  Track Carrier Roller....1738
  Track Roller (Double Flange)....1743
  Track Roller (Single Flange)....1745
  Track Roller Mounting....1764
  Track....1777
  Travel Counterbalance Valve....1788
  Travel Motor Guard....1799
  Travel Motor Lines....1807
  Travel Motor and Mounting....1811
  Travel Motor....1822
  Upper Frame....1832
  Vandalism Guard....1847
  Window Wiper and Washer....1851
  Wiring (Battery) - Cold Weather....1854
  Wiring (Battery)....1859
  Wiring (Refueling Pump)....1869
RENR7294 - Systems Operation (320D and 323D Excavators Hydraulic System)....1873
  Accumulator (Pilot)....1875
  Boom Drift Reduction Valve....1878
  Boom Hydraulic System....1882
  Bucket Hydraulic System....1913
  Bypass Valve (Return) - Bypass Check Valve....1922
  Check Valve (Load)....1925
  Check Valve (Return Makeup) - Slow Return Check Valve....1929
  Control Valve (Boom Lowering)....1932
  Control Valve (Stick Lowering)....1938
  Control Valve (Straight Travel)....1946
  Cylinders (Boom, Stick and Bucket)....1950
  Displacement Change Valve....1953
  Electronic Control System....1958
  Final Drive....1962
  Gear Pump (Pilot)....1987
  General Information....1988
  Graphic Color Codes....1989
  Hydraulic Filter (Pilot)....1991
  Hydraulic Oil Cooler....1994
  Hydraulic Tank and Filter....1996
  Main Control Valve....1998
  Main Hydraulic Pump....2027
  Main Hydraulic System....2031
  Medium Pressure Hydraulic System....2057
  Negative Flow Control System....2063
  Oil Filter (Return) - Case Drain Filter....2084
  Oil Makeup (Swing System)....2086
  Oil Makeup (Travel System)....2097
  Pilot Hydraulic System....2104
  Pilot Valve (Joystick)....2144
  Pilot Valve (Straight Travel)....2147
  Pilot Valve (Swing Parking Brake)....2156
  Pilot Valve (Travel)....2160
  Pump Control (Main Hydraulic) - Main Pump Regulator....2164
  Relief Valve (Cushion Crossover) - Anti-Reaction Valves....2176
  Relief Valve (Line)....2200
  Relief Valve (Main) - Heavy Lift....2203
  Relief Valve (Main)....2210
  Relief Valve (Pilot)....2215
  Relief Valve (Swing)....2217
  Return Hydraulic System....2231
  Solenoid Valve (Fine Swing) - If Equipped....2240
  Solenoid Valve (Hydraulic Lockout)....2246
  Solenoid Valve (Proportional Reducing) - Power Shift System....2251
  Stick Drift Reduction Valve....2255
  Stick Hydraulic System....2259
  Swing Drive....2285
  Swing Hydraulic System....2292
  Swing Motor....2320
  Swivel....2325
  Travel Counterbalance Valve....2328
  Travel Hydraulic System....2350
  Travel Motor....2389
  Travel Parking Brake....2394
RENR7295 - Testing and Adjusting (320D and 323D Excavators Hydraulic System)....2398
  Accumulator (Pilot) - Test and Charge....2400
  Cylinder Drift - Check - Empty Bucket....2407
  Cylinder Drift - Check - Loaded Bucket....2413
  Cylinder Speed - Check....2416
  Engine Performance - Test - Engine Speed....2427
  Gear Pump (Pilot) - Test....2433
  General Testing and Adjusting Information....2441
  Hydraulic System Pressure - Release....2443
  Machine Drift on a Slope - Check....2448
  Main Hydraulic Pump Air - Purge....2451
  Main Pump (Flow) - Test - Constant Horsepower Flow Control....2454
  Operational Checks....2471
  Overload Warning - Set - If Equipped....2477
  Pump Control (Negative Flow) - Adjust....2490
  Pump Control (Negative Flow) - Test....2494
  Pump Control (Output Flow) - Adjust....2513
  Relief Valve (Crossover) - Test and Adjust....2516
  Relief Valve (Line) - Test and Adjust ....2525
  Relief Valve (Line) - Test and Adjust....2578
  Relief Valve (Main) - Test and Adjust - Heavy Lift....2592
  Relief Valve (Main) - Test and Adjust ....2600
  Relief Valve (Pilot) - Test and Adjust....2605
  Relief Valve (Swing) - Test and Adjust....2608
  Solenoid Valve (Swing Parking Brake) - Test....2613
  Specifications....2617
  Swing Bearing Movement - Measure....2627
  Swing Motor - Test - Measurement of Case Drain Oil....2634
  Swing Speed and Overswing on Level Ground - Check....2640
  Swing Speed and Swing Drift on a Slope - Check....2648
  Travel Motor - Test - Measurement of Case Drain Oil....2653
  Travel on Level Ground - Test - Optional Test....2659
  Travel on Level Ground - Test....2667
  Visual Inspection....2675
RENR7296 - Schematic (320D and 320D L Excavator Hydraulic System)....2677
  Collage....2678
  Main....2693
RENR7404 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)....2706
  Collage....2707
  Main....2722
RENR7439 - Schematic (320D and 323D Excavator Hydraulic System - Attachment)....2732
  Collage....2733
  Main....2748
RENR7500 - Disassembly & Assembly (323D Excavator Machine Systems)....2758
  Accumulator - Remove and Install....2763
  Actuator Motor (Air Distributor) - Remove and Install....2767
  Auxiliary Pilot Valve (Straight Travel) - Assemble....2773
  Auxiliary Pilot Valve (Straight Travel) - Disassemble....2789
  Auxiliary Pilot Valve (Straight Travel) - Install....2845
  Auxiliary Pilot Valve (Straight Travel) - Remove....2851
  Blower Motor (Air Conditioner, Heater) - Remove and Install....2855
  Boom - Install....2859
  Boom - Remove....2867
  Boom Bearings and Seals - Remove and Install....2875
  Boom Cylinder - Remove and Install....2879
  Boom Lighting - Remove and Install....2891
  Bucket - Remove and Install....2895
  Bucket Cylinder - Remove and Install....2904
  Bucket Linkage - Remove and Install....2911
  Bucket Linkage Bearings and Seals - Install....2920
  Bucket Linkage Bearings and Seals - Remove....2925
  Cab - Install....2928
  Cab - Remove....2938
  Check Valve (Cooler Bypass) - Assemble....2948
  Check Valve (Cooler Bypass) - Disassemble....2951
  Check Valve (Cooler Bypass) - Install....2954
  Check Valve (Cooler Bypass) - Remove....2957
  Control Manifold (Pilot Oil) - Assemble - Hydraulic Lockout, Swing Brake, Travel....2961
  Control Manifold (Pilot Oil) - Disassemble - Hydraulic Lockout, Swing Brake, Travel....2965
  Control Manifold (Pilot Oil) - Install....2969
  Control Manifold (Pilot Oil) - Remove....2972
  Control Module (Automatic Temperature Control Unit) - Remove and Install....2976
  Counterbalance Valve (Travel) - Assemble....2981
  Counterbalance Valve (Travel) - Disassemble....2985
  Counterbalance Valve (Travel) - Install....2991
  Counterbalance Valve (Travel) - Remove....2994
  Counterweight - Remove and Install....2998
  Duo-Cone Conventional Seals - Install ....3001
  Evaporator Coil - Install....3015
  Evaporator Coil - Remove....3018
  Final Drive - Assemble....3021
  Final Drive - Disassemble....3035
  Final Drive - Install....3048
  Final Drive - Remove....3051
  Front Idler and Recoil Spring - Install....3054
  Front Idler and Recoil Spring - Remove....3057
  Fuel Tank - Install....3060
  Fuel Tank - Remove....3064
  Gear Pump (Pilot) - Assemble....3069
  Gear Pump (Pilot) - Disassemble....3073
  Gear Pump (Pilot) - Install....3077
  Gear Pump (Pilot) - Remove....3078
  Heater Core - Install....3080
  Heater Core - Remove....3084
  Heating and Air Conditioning Unit - Install....3088
  Heating and Air Conditioning Unit - Remove....3092
  Hydraulic Lockout Control - Assemble....3096
  Hydraulic Lockout Control - Disassemble....3099
  Hydraulic Lockout Control - Install....3102
  Hydraulic Lockout Control - Remove....3104
  Hydraulic Tank - Install....3106
  Hydraulic Tank - Remove....3118
  Hydraulic Track Adjusters - Assemble....3124
  Hydraulic Track Adjusters - Disassemble....3128
  Hydraulic Track Adjusters - Install....3131
  Hydraulic Track Adjusters - Remove....3133
  Load Control Valve (Boom Cylinder) - Assemble....3135
  Load Control Valve (Boom Cylinder) - Disassemble....3141
  Load Control Valve (Boom Cylinder) - Install....3147
  Load Control Valve (Boom Cylinder) - Remove....3149
  Load Control Valve (Stick Cylinder) - Assemble....3153
  Load Control Valve (Stick Cylinder) - Disassemble....3162
  Load Control Valve (Stick Cylinder) - Install....3172
  Load Control Valve (Stick Cylinder) - Remove....3175
  Main Control Valve - Assemble....3178
  Main Control Valve - Disassemble....3193
  Main Control Valve - Install....3209
  Main Control Valve - Remove....3216
  Main Hydraulic Pump - Assemble....3224
  Main Hydraulic Pump - Disassemble....3250
  Main Hydraulic Pump - Install....3302
  Main Hydraulic Pump - Remove....3326
  Oil Filter (Hydraulic, Return) - Install....3334
  Oil Filter (Hydraulic, Return) - Remove....3337
  Operator Console - Remove and Install....3340
  Pilot Valve (Joystick) - Assemble....3350
  Pilot Valve (Joystick) - Disassemble....3357
  Pilot Valve (Joystick) - Install....3364
  Pilot Valve (Joystick) - Remove....3366
  Pilot Valve (Travel) - Assemble....3369
  Pilot Valve (Travel) - Disassemble....3380
  Pilot Valve (Travel) - Install....3390
  Pilot Valve (Travel) - Remove....3396
  Pressure Reducing Valve (Implement and Swing Priority) - Assemble....3402
  Pressure Reducing Valve (Implement and Swing Priority) - Disassemble....3406
  Pressure Reducing Valve (Implement and Swing Priority) - Install....3410
  Pressure Reducing Valve (Implement and Swing Priority) - Remove....3412
  Recoil Spring - Assemble....3414
  Recoil Spring - Disassemble....3421
  Refrigerant Receiver-Dryer - Remove and Install....3427
  Refueling Pump - Install....3430
  Refueling Pump - Remove....3433
  Relief Valve (Pilot) - Install....3437
  Relief Valve (Pilot) - Remove....3439
  Seat - Remove and Install....3442
  Seat Support - Remove and Install....3445
  Seat Suspension - Remove and Install....3448
  Selector Valve (Alternate Pattern Control) - Assemble....3451
  Selector Valve (Alternate Pattern Control) - Disassemble....3454
  Selector Valve (Alternate Pattern Control) - Install....3457
  Selector Valve (Alternate Pattern Control) - Remove....3459
  Sprocket - Remove and Install....3461
  Stick - Install....3465
  Stick - Remove....3468
  Stick Bearings and Seals - Install....3472
  Stick Bearings and Seals - Remove....3476
  Stick Cylinder - Remove and Install ....3479
  Storage Box and Covers (Cab) - Remove and Install....3486
  Swing Cushion Valve - Assemble - Fine Swing Solenoid....3489
  Swing Cushion Valve - Disassemble - Fine Swing Solenoid....3493
  Swing Cushion Valve - Install....3497
  Swing Cushion Valve - Remove....3498
  Swing Drive - Assemble....3499
  Swing Drive - Disassemble ....3509
  Swing Gear and Bearing - Install....3520
  Swing Gear and Bearing - Remove....3526
  Swing Motor - Assemble....3529
  Swing Motor - Disassemble....3542
  Swing Motor - Install....3555
  Swing Motor - Remove....3561
  Swing Motor and Swing Drive - Install....3567
  Swing Motor and Swing Drive - Remove....3575
  Swivel - Assemble....3583
  Swivel - Disassemble....3586
  Swivel - Install....3589
  Swivel - Remove....3592
  System Pressure - Release....3595
  Track - Connect....3597
  Track - Separate....3600
  Track Carrier Roller - Install....3603
  Track Carrier Roller - Remove....3606
  Track Roller - Install....3609
  Track Roller - Remove....3612
  Travel Motor - Assemble....3616
  Travel Motor - Disassemble....3627
  Travel Motor - Install....3636
  Travel Motor - Remove....3640
  Upper Frame and Undercarriage Frame - Connect....3644
  Upper Frame and Undercarriage Frame - Separate....3651
  Window Wiper Motor - Remove and Install - Upper....3658
RENR8614 - Disassembly and Assembly (320D Excavator Machine Systems)....3665
  Accumulator - Remove and Install....3670
  Actuator Motor (Air Distributor) - Remove and Install....3674
  Auxiliary Pilot Valve (Straight Travel) - Assemble....3680
  Auxiliary Pilot Valve (Straight Travel) - Disassemble....3688
  Auxiliary Pilot Valve (Straight Travel) - Install....3696
  Auxiliary Pilot Valve (Straight Travel) - Remove....3702
  Blower Motor (Air Conditioner, Heater) - Remove and Install....3706
  Boom - Install....3710
  Boom - Remove....3718
  Boom Bearings and Seals - Remove and Install....3726
  Boom Cylinder - Remove and Install....3730
  Boom Lighting - Remove and Install....3742
  Bucket - Remove and Install....3746
  Bucket Cylinder - Remove and Install....3755
  Bucket Linkage - Remove and Install....3762
  Bucket Linkage Bearings and Seals - Install....3771
  Bucket Linkage Bearings and Seals - Remove....3776
  Cab - Install....3779
  Cab - Remove....3790
  Check Valve (Cooler Bypass) - Assemble....3801
  Check Valve (Cooler Bypass) - Disassemble....3804
  Check Valve (Cooler Bypass) - Install....3807
  Check Valve (Cooler Bypass) - Remove....3810
  Control Manifold (Pilot Oil) - Assemble - Hydraulic Lockout, Swing Brake, Travel....3814
  Control Manifold (Pilot Oil) - Disassemble - Hydraulic Lockout, Swing Brake, Travel....3822
  Control Manifold (Pilot Oil) - Install....3830
  Control Manifold (Pilot Oil) - Remove....3839
  Control Module (Automatic Temperature Control Unit) - Remove and Install....3847
  Counterbalance Valve (Travel) - Assemble....3852
  Counterbalance Valve (Travel) - Disassemble....3856
  Counterbalance Valve (Travel) - Install....3862
  Counterbalance Valve (Travel) - Remove....3865
  Counterweight - Remove and Install....3869
  Duo-Cone Conventional Seals - Install ....3872
  Evaporator Coil - Install....3886
  Evaporator Coil - Remove....3889
  Final Drive - Assemble....3892
  Final Drive - Disassemble....3905
  Final Drive - Install....3917
  Final Drive - Remove....3920
  Front Idler, Recoil Spring and Hydraulic Track Adjuster - Install....3923
  Front Idler, Recoil Spring and Hydraulic Track Adjuster - Remove....3926
  Fuel Tank - Install....3929
  Fuel Tank - Remove....3933
  Gear Pump (Pilot) - Assemble....3938
  Gear Pump (Pilot) - Disassemble....3942
  Gear Pump (Pilot) - Install....3946
  Gear Pump (Pilot) - Remove....3947
  Heater Core - Install....3949
  Heater Core - Remove....3953
  Heating and Air Conditioning Unit - Install....3957
  Heating and Air Conditioning Unit - Remove....3961
  Hydraulic Lockout Control - Assemble....3965
  Hydraulic Lockout Control - Disassemble....3968
  Hydraulic Lockout Control - Install....3971
  Hydraulic Lockout Control - Remove....3973
  Hydraulic Tank - Install....3975
  Hydraulic Tank - Remove....3981
  Hydraulic Track Adjusters - Assemble....3987
  Hydraulic Track Adjusters - Disassemble....3991
  Load Control Valve (Boom Cylinder) - Assemble....3994
  Load Control Valve (Boom Cylinder) - Disassemble....4000
  Load Control Valve (Boom Cylinder) - Install....4006
  Load Control Valve (Boom Cylinder) - Remove....4008
  Load Control Valve (Stick Cylinder) - Assemble....4012
  Load Control Valve (Stick Cylinder) - Disassemble....4021
  Load Control Valve (Stick Cylinder) - Install....4031
  Load Control Valve (Stick Cylinder) - Remove....4034
  Main Control Valve - Assemble....4037
  Main Control Valve - Disassemble....4052
  Main Control Valve - Install....4068
  Main Control Valve - Remove....4075
  Main Hydraulic Pump - Assemble....4083
  Main Hydraulic Pump - Disassemble....4109
  Main Hydraulic Pump - Install....4135
  Main Hydraulic Pump - Remove....4143
  Oil Filter (Hydraulic, Return) - Install....4151
  Oil Filter (Hydraulic, Return) - Remove....4154
  Operator Console - Remove and Install....4157
  Pilot Valve (Joystick) - Assemble....4167
  Pilot Valve (Joystick) - Disassemble....4181
  Pilot Valve (Joystick) - Install....4195
  Pilot Valve (Joystick) - Remove....4199
  Pilot Valve (Travel) - Assemble....4205
  Pilot Valve (Travel) - Disassemble....4227
  Pilot Valve (Travel) - Install....4247
  Pilot Valve (Travel) - Remove....4253
  Pressure Reducing Valve (Implement and Swing Priority) - Assemble....4265
  Pressure Reducing Valve (Implement and Swing Priority) - Disassemble....4269
  Pressure Reducing Valve (Implement and Swing Priority) - Install....4273
  Pressure Reducing Valve (Implement and Swing Priority) - Remove....4275
  Recoil Spring - Assemble....4277
  Recoil Spring - Disassemble....4284
  Refrigerant Receiver-Dryer - Remove and Install....4290
  Refueling Pump - Install....4293
  Refueling Pump - Remove....4296
  Relief Valve (Pilot) - Install....4300
  Relief Valve (Pilot) - Remove....4302
  Removal Procedure ....4305
  Seat - Remove and Install....4315
  Seat Support - Remove and Install....4318
  Seat Suspension - Remove and Install....4321
  Selector Valve (Alternate Pattern Control) - Assemble....4324
  Selector Valve (Alternate Pattern Control) - Disassemble....4330
  Selector Valve (Alternate Pattern Control) - Install....4336
  Selector Valve (Alternate Pattern Control) - Remove....4340
  Sprocket - Remove and Install....4342
  Stick - Install....4346
  Stick - Remove....4349
  Stick Bearings and Seals - Install....4353
  Stick Bearings and Seals - Remove....4357
  Stick Cylinder - Remove and Install ....4360
  Storage Box and Covers (Cab) - Remove and Install....4367
  Swing Cushion Valve - Assemble - Fine Swing Solenoid....4370
  Swing Cushion Valve - Disassemble - Fine Swing Solenoid....4374
  Swing Cushion Valve - Install....4378
  Swing Cushion Valve - Remove....4379
  Swing Drive - Assemble....4380
  Swing Drive - Disassemble ....4390
  Swing Gear and Bearing - Install....4401
  Swing Gear and Bearing - Remove....4407
  Swing Motor - Assemble....4410
  Swing Motor - Disassemble....4423
  Swing Motor - Install....4436
  Swing Motor - Remove....4442
  Swing Motor and Swing Drive - Remove....4448
  Swivel - Assemble....4456
  Swivel - Disassemble....4459
  Swivel - Install....4462
  Swivel - Remove....4465
  System Pressure - Release....4468
  Track - Connect....4470
  Track - Separate....4473
  Track Carrier Roller - Install....4476
  Track Carrier Roller - Remove....4479
  Track Roller - Install....4482
  Track Roller - Remove....4485
  Travel Motor - Assemble....4489
  Travel Motor - Disassemble....4500
  Travel Motor - Install....4509
  Travel Motor - Remove....4513
  Upper Frame and Undercarriage Frame - Connect....4517
  Upper Frame and Undercarriage Frame - Separate....4524
  Window Wiper Motor - Remove and Install - Upper....4531
RENR8650 - Disassembly and Assembly (320D Excavator C6.4 Engine Supplement)....4538
  Aftercooler - Remove and Install....4540
  Air Cleaner - Remove and Install....4544
  Alternator - Remove and Install....4550
  Battery - Remove and Install....4558
  Engine - Install ....4562
  Engine - Remove....4578
  Engine Electronic Control - Remove and Install....4594
  Engine Front Mount - Install....4596
  Engine Front Mount - Remove....4598
  Engine Oil Filter and Oil Filter Base - Remove and Install....4600
  Engine Rear Mount - Install....4602
  Engine Rear Mount - Remove....4603
  Fan - Install....4604
  Fan - Remove and Install....4607
  Fan - Remove....4611
  Fan Drive - Remove and Install....4614
  Fuel Filter (Secondary) and Fuel Filter Base - Remove and Install....4616
  Fuel Filter and Water Separator Base - Remove and Install....4618
  Fuel Priming Pump - Remove and Install....4620
  Fuel Transfer Pump - Remove and Install....4622
  Fuel Transfer Pump and Unit Injector Hydraulic Pump - Remove and Install....4624
  Hood - Remove and Install....4641
  Hydraulic Oil Cooler - Remove and Install....4646
  Muffler - Remove and Install....4650
  Radiator - Remove and Install....4654
  Radiator and Hydraulic Oil Cooler - Install....4657
  Radiator and Hydraulic Oil Cooler - Remove....4665
  Refrigerant Compressor - Remove and Install....4673
  Refrigerant Condenser - Remove and Install....4676
  Refrigerant Receiver-Dryer - Remove and Install....4681
  System Pressure - Release....4685
  Turbocharger - Remove and Install....4687
  Water Pump - Remove and Install....4690
  Water Temperature Regulator - Remove and Install....4692
RENR9104 - Schematic (320D Excavator Hydraulic System - Attachment)....4695
  Collage....4696
  Main....4711
RENR9107 - Schematic (320D Excavator Hydraulic System - Attachment)....4720
  Collage....4721
  Main....4736
RENR9209 - Disassembly and Assembly (323D Excavator 3066 Engine Supplement)....4745
  Air Cleaner - Remove and Install....4747
  Air Inlet Heater - Remove and Install....4757
  Alternator - Remove and Install....4763
  Electric Starting Motor - Remove and Install....4768
  Engine Oil Cooler - Remove and Install....4772
  Engine Oil Filter Base - Assemble....4776
  Engine Oil Filter Base - Disassemble....4781
  Engine Oil Filter and Oil Filter Base - Remove and Install....4787
  Engine Oil Level Gauge (Dipstick) - Remove and Install....4793
  Engine and Main Hydraulic Pump - Install....4796
  Engine and Main Hydraulic Pump - Remove....4819
  Exhaust Manifold (In Chassis) - Remove and Install....4843
  Fan - Remove and Install....4847
  Flywheel and Ring Gear - Remove and Install....4852
  Fuel Filter (Primary) and Fuel Filter Base - Remove and Install....4857
  Fuel Priming Pump - Remove and Install....4861
  Governor Control Motor - Remove and Install....4865
  Hood - Remove and Install....4872
  Hydraulic Oil Cooler - Install....4878
  Hydraulic Oil Cooler - Remove....4885
  Muffler - Remove and Install....4892
  Oil Pan - Remove and Install....4898
  Radiator - Install....4909
  Radiator - Remove....4915
  Refrigerant Compressor - Remove and Install....4922
  Refrigerant Condenser - Remove and Install....4928
  System Pressure - Release....4934
  Turbocharger - Install....4936
  Turbocharger - Remove....4942
  Water Pump - Install....4948
  Water Pump - Remove....4950
  Water Separator - Remove and Install....4953
  Water Temperature Regulator - Remove and Install....4958
RENR9896 - Schematic (323D Excavator Hydraulic System)....4964
  Collage....4965
  Main....4980
RENR9897 - Schematic (323D Excavator Electrical System)....4991
  Collage....4992
  Main....5016
RENR9972 - Schematic (323D Excavator Hydraulic System - Attachment)....5018
  Collage....5019
  Main....5034
RENR9998 - Schematic (323D Excavator Hydraulic System - Attachment)....5036
  Collage....5037
  Main....5052
SEBP4874 - Parts Manual (320D & 320D L Excavators)....5054
  Vol. I....5055
  Vol. II....5867
  Vol. III....6595
SENR5664 - Disassembly & Assembly (Air Conditioning & Heating R134a for All Caterpillar Machines)....7198
  Air Conditioner Lines - Remove and Install....7199
  General Information....7204
  In-Line Refrigerant Dryer - Remove and Install....7207
  Machine Preparation for Disassembly and Assembly....7215
  Refrigerant Accumulator - Remove and Install....7218
  Refrigerant Compressor - Remove and Install ....7219
  Refrigerant Expansion Valve - Remove and Install....7221
  Refrigerant Orifice Tube Assembly - Remove and Install....7223
  Refrigerant Receiver-Dryer - Remove and Install....7227
SENR5664 - Specifications (Air Conditioning & Heating R134a for All Caterpillar Machines)....7229
  Refrigerant Compressor (1)....7231
  Refrigerant Compressor (10)....7262
  Refrigerant Compressor (11)....7268
  Refrigerant Compressor (12)....7271
  Refrigerant Compressor (13)....7276
  Refrigerant Compressor (14)....7279
  Refrigerant Compressor (15)....7284
  Refrigerant Compressor (16)....7290
  Refrigerant Compressor (17)....7300
  Refrigerant Compressor (18)....7309
  Refrigerant Compressor (19)....7312
  Refrigerant Compressor (2)....7315
  Refrigerant Compressor (3)....7324
  Refrigerant Compressor (4)....7334
  Refrigerant Compressor (5)....7337
  Refrigerant Compressor (6)....7340
  Refrigerant Compressor (7)....7343
  Refrigerant Compressor (8)....7350
  Refrigerant Compressor (9)....7353
  System Capacities for Refrigerant (Excavators) - 302.5-5080....7356
  System Capacities for Refrigerant (Excavators) - 304 CR, 305 CR, 313B CR, 321B CR....7366
  System Capacities for Refrigerant (Excavators) - 307C, 311C, 320C....7368
  System Capacities for Refrigerant (Excavators) - 307D to 390D....7370
  System Capacities for Refrigerant (Excavators) - 308C CR-321C CR....7388
  System Capacities for Refrigerant (Excavators) - 308D CR-328D CR....7390
  System Capacities for Refrigerant (Excavators) - 311B-330B....7393
  System Capacities for Refrigerant (Excavators) - 311B-385B....7397
  System Capacities for Refrigerant (Excavators) - 312B-5090B....7403
  System Capacities for Refrigerant (Excavators) - 312C, 322C-330C, TK1051....7411
  System Capacities for Refrigerant (Excavators) - 312C-330C....7414
  System Capacities for Refrigerant (Excavators) - 324D FM, 325D FM, 330D FM, 568 FM....7422
  System Capacities for Refrigerant (Excavators) - OEM MHPU....7424
  System Capacities for Refrigerant (Forest Products)....7429
SENR5664 - Systems Operation (Air Conditioning & Heating R134a for All Caterpillar Machines)....7441
  Cab Pressurization and Filtration System....7442
  Condensate Drainage System....7444
  Evaporator Coil....7445
  General Information....7447
  Glossary of Terms....7448
  Identifying the Air Conditioning System....7452
  Identifying the Heating System....7455
  Identifying the Refrigerant....7459
  In-line Refrigerant Dryer....7461
  Pressure Switch (Refrigerant)....7463
  Refrigerant Accumulator....7466
  Refrigerant Compressor Protection System....7468
  Refrigerant Compressor....7472
  Refrigerant Condenser....7475
  Refrigerant Expansion Valve System....7477
  Refrigerant Expansion Valve....7480
  Refrigerant Orifice Tube Assembly....7483
  Refrigerant Orifice Tube System....7485
  Refrigerant Receiver-Dryer....7488
  Service Intervals....7492
  Temperature Control....7500
SENR5664 - Testing & Adjusting (Air Conditioning & Heating R134a for All Caterpillar Machines)....7504
  Air Conditioning Performance - Test....7505
  Compressor Protection System - Test....7509
  Electronic Heat Control - Test....7525
  Heater Performance - Test....7544
  Heating and Air Conditioning Service Publications....7546
  Machine Preparation for Testing and Adjusting....7550
  Manifold Gauge Set (Refrigerant) - Install....7553
  Manifold Gauge Set (Refrigerant) - Remove....7555
  Refrigerant Compressor - Test....7558
  Refrigerant Leakage - Test....7566
  Refrigerant Oil - Test....7569
  Refrigerant Recovery....7575
  Refrigerant System - Charge....7579
  Refrigerant System - Evacuate....7596
  Refrigerant System - Flush....7602
SENR5664 - Troubleshooting (Air Conditioning & Heating R134a for All Caterpillar Machines)....7611
  Air Conditioning System Troubleshooting....7612
  Automatic Temperature Control Panel Troubleshooting - 584 and 584HD Forwarders....7633
  Automatic Temperature Control System (ECM Controlled) Troubleshooting....7638
  General Troubleshooting Information....7645
  Heating System Troubleshooting....7646
  Machine Preparation for Troubleshooting....7654
  Required Tools....7657
  Troubleshooting Condensate Drainage System....7660
  Troubleshooting Heating and Air Conditioning Control System....7661
  Visual Inspection (Troubleshooting)....7681
SENR6572 - Disassembly & Assembly (Zexel Fuel System)....7684
  Fuel Priming and Transfer Pump....7685
  Fuel Pump Housing....7691
  Governor....7705
SENR6572 - Systems Operations (Zexel Fuel System)....7725
SENR6572 - Testing & Adjusting (Zexel Fuel System)....7731
UENR2514 - Schematic (320D Excavator Hydraulic System - Attachment)....7770
  Collage....7771
  Main....7795
UENR3685 - Schematic (320D Excavator Electrical System)....7806
  Collage....7807
  Main....7831
UENR5820 - Schematic (320D Excavator Electrical System)....7847
  Collage....7848
  Main....7872
3. Check O-ring seal (3) on fuel priming and transfer pump (2). Replace if necessary.
4. Remove two bolts (4) and washers.
5. Remove cover (5). Remove the gasket on the back of cover (5).
6. Install Tool (D) to rotate the camshaft until the tappets are in the top center position.
7. Insert Tool (N), (tappet holders) into the small holes (6) on the tappet body to separate the tappet from the camshaft.
8. Rotate the fuel injection pump housing on its side and remove six screws plugs (7).
9. Remove two center bearing screws (8) with a screwdriver.
10. Rotate the camshaft until the key groove is facing up, remove Tool (D), use Tools (L and K) to remove Tool (D).
11. Remove four bearing cover bolts (9).
12. Tap the camshaft lightly from the governor end with a soft hammer to loosen bearing cover (10).
Remove bearing cover (10).
...