Complete Diagnosis & Tests Technical Manual with electrical wiring diagrams for John Deere 848H Skidder ( —630435) , with workshop information to maintain, diagnose, and rebuild like professional mechanics.

John Deere 848H Skidder ( —630435)  workshop Diagnosis & Tests technical 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.

TM10287 - John Deere 848H Skidder ( —630435) Technical Manual - Operation and Test.pdf
TM11046 - John Deere Débusqueurs 848H ( —630435).pdf

Category: Operation and Test
Language: English French
Published on 2018/09/06

PRODUCT DETAILS:
Total Pages: 1,175 pages
File Format: PDF (bookmarked, ToC, Searchable, Printable)
Language: English

TABLE OF CONTENTS
Section 9000: General Information....19
  Group 01: Safety Information....19
    Recognize Safety Information....22
    Follow Safety Instructions....23
    Operate Only If Qualified....24
    Wear Protective Equipment....25
    Avoid Unauthorized Machine Modifications....26
    Inspect Machine....27
    Stay Clear of Moving Parts....28
    Avoid High-Pressure Oils....29
    Avoid High-Pressure Fluids....30
    Do Not Use Starting Fluid With Tier III Engine....31
    Beware of Exhaust Fumes....32
    Prevent Fires....33
    Prevent Battery Explosions....34
    Handle Chemical Products Safely....35
    Dispose of Waste Properly....36
    Prepare for Emergencies....37
    Use Steps and Handholds Correctly....38
    Start Only From Operator's Seat....39
    Use and Maintain Seat Belt....40
    Prevent Unintended Machine Movement....41
    Avoid Work Site Hazards....42
    Operate Machine Safely....43
    Keep Riders Off Machine....44
    Avoid Backover Accidents....45
    Avoid Machine Tip Over....46
    Operating on Slopes....48
    Operating or Traveling On Public Roads....49
    Inspect and Maintain ROPS....50
    Keep the Operator Protective Structure (OPS) in Place....51
    Add and Operate Attachments Safely....52
    Park and Prepare for Service Safely....53
    Service Cooling System Safely....55
    Remove Paint Before Welding or Heating....56
    Make Welding Repairs Safely....57
    Service Tires Safely....58
    Drive Metal Pins Safely....59
Section 9001: Diagnostic Trouble Codes (DTC)....60
  Group 10: Engine Control Unit (ECU) Diagnostic Trouble Codes....64
    Engine Control Unit (ECU) Diagnostic Trouble Codes....64
    000091.03 - Throttle Voltage Out of Range High....60
    000091.04 - Throttle Voltage Out of Range Low....60
    000647.05 - Fan Proportional Solenoid Out of Range Low....60
    000647.30 - Reversing Fan Switch Active Too Long....60
    000676.03 - Glow Plug Relay Out of Range High....60
    000676.05 - Glow Plug Relay Out of Range Low....60
    001075.05 - Low Pressure Fuel Pump Out of Range Low....60
    001075.06 - Low Pressure Fuel Pump Out of Range High....60
    002003.09 - TCU Communication Data Error....60
    002003.13 - TCU Communication Calibrate Error....60
    002017.09 - SDM Communication Data Error....60
    002017.13 - SDM Communication Calibrate Error....60
  Group 20: Transmission Control Unit (TCU) Diagnostic Trouble Codes....97
    Transmission Control Unit (TCU) Diagnostic Trouble Codes....97
    000177.12 - Oil Temp Sensor Out of Range....60
    000525.02 - Shift Parameter Erratic or Bad Data....60
    000525.12 - Request for an Unidentified Shift Being Made....60
    002000.09 - ECU Communication Data Error....60
    002000.13 - ECU Communication Calibrate Error....60
    298626.03 - Park and Not Park Active Out of Range High....60
    298626.04 - Park and Not Park Active Out of Range Low....60
    298678.04 - Clutch Valve Supply Voltage Out of Range Low....60
    298808.31 - Output Speed Sensor Condition Exists....60
    298809.31 - Starter Input Signal High....60
    298811.05 - Solenoid B Out of Range Low....60
    298811.06 - Solenoid B Out of Range High....60
    298812.05 - Solenoid A Out of Range Low....60
    298812.06 - Solenoid A Out of Range High....60
    298814.05 - Solenoid 3 Out of Range Low....60
    298814.06 - Solenoid 3 Out of Range High....60
    298815.05 - Solenoid 2 Out of Range Low....61
    298815.06 - Solenoid 2 Out of Range High....61
    298818.31 - Directional Clutch Slip Condition Exists....61
    298819.31 - Speed Clutch Slip Condition Exists....61
    298907.31 - Not Park and Park Pressure Inputs Passive....61
    298919.31 - Not Park and Park Pressure Inputs Active....61
    298925.31 - Shifter Neutral and Reverse Inputs Active....61
    298926.31 - Shifter Neutral and Forward Inputs Active....61
    298927.31 - Neutral Forward Reverse Inputs Passive....61
    298928.31 - Upshift and Downshift Inputs Active....61
    298929.31 - Bottom of Clutch Input Passive....61
    298931.31 - Output Speed Sensor Out of Range....61
    298932.31 - Calibration Without Park Brake Applied....61
    298933.31 - EEPROM Shift Parameter Condition....61
    298934.03 - Solenoid Group 3 Out of Range High....61
    298934.04 - Solenoid Group 3 Out of Range Low....61
    298935.03 - Solenoid Group 2 Out of Range High....61
    298935.04 - Solenoid Group 2 Out of Range Low....61
    298936.03 - Solenoid Group 1 Out of Range High....61
    298936.04 - Solenoid Group 1 Out of Range Low....61
    298937.31 - Hold Clutch Pressure Condition....61
    298939.31 - Calibrating Clutch Pressure Condition....61
    298940.31 - Clutch D Fast Full Time Condition....61
    298941.31 - Clutch C Fast Fill Time Condition....61
    298942.31 - Clutch B Fast Fill Time Condition....61
    298943.31 - Clutch A Fast Fill Time Condition....61
    298944.31 - Clutch 4 Fast Fill Time Condition....61
    298945.31 - Clutch 3 Fast Fill Time Condition....61
    298946.31 - Clutch 2 Fast Fill Time Condition....61
    298947.31 - Clutch 1 Fast Fill Time Condition....61
    298948.31 - Cylinder Speed With Reverse Clutch Condition....61
    298949.31 - Cylinder Speed With Forward Clutch Condition....61
    298950.31 - Cylinder Speed Condition....61
    298951.31 - Engine Speed Too Low For Calibration....62
    298952.31 - Engine Speed Too High For Calibration....62
    298953.31 - Sump Temp Too Low For Calibration....62
    298954.05 - Solenoid 1 Out of Range Low....62
    298954.06 - Solenoid 1 Out of Range High....62
    298955.05 - Solenoid D Out of Range Low....62
    298955.06 - Solenoid D Out of Range High....62
    299359.31 - Forward and Reverse Inputs Active....62
    523120.16 - Clutch Temperature Moderately High Value....62
    523656.05 - Dual Mode Steer Output Out of Range Low....62
    523656.06 - Dual Mode Steer Output Out of Range High....62
    523689.04 - Differential Lock Short to Ground....62
    523925.03 - Dual Mode Steer Switch Out of Range High....62
    523925.04 - Dual Mode Steer Switch Out of Range Low....62
  Group 30: Standard Display Monitor (SDM) Diagnostic Trouble Codes....235
    Standard Display Monitor (SDM) Diagnostic Trouble Codes....235
    000096.03 - Fuel Level Sensor Out of Range High....62
    000096.04 - Fuel Level Sender Out of Range Low....62
    000107.00 - Engine Air Filter Restriction Data Above Normal....62
    000126.00 - Transmission Oil Filter Restriction Data Above Normal....62
    000158.00 - System Voltage Data Above Normal....62
    000158.01 - System Voltage Data Below Normal....62
    000911.00 - Engine Air Filter Data Above Normal....62
    001508.00 - Hydraulic Reservoir Oil Temperature Sensor Data Above Normal....62
    001508.03 - Hydraulic Reservoir Oil Temperature Sensor Out of Range High....62
    001508.04 - Hydraulic Reservoir Oil Temperature Sensor Out of Range Low....62
    001508.16 - Hydraulic Oil Temp Sensor Moderately High Value....62
    001713.00 - Hydraulic Oil Filter Restriction Data Above Normal....62
    002000.09 - ECU Communication Data Error....62
    002000.13 - ECU Communication Calibrate Error....62
    002003.09 - TCU Communication Data Error....62
    002003.13 - TCU Communication Calibrate Error....62
Section 9005: Operational Checkout....282
  Group 10: Operational Checks....282
    Complete Machine Operational Checkout....343
Section 9010: Engine....403
  Group 05: Theory of Operation....403
    Engine Fuel System Component Location....406
    Engine Cooling System Component Location....408
    Engine Fluid Sample Port Locations....409
    Cold Weather Starting Aid....410
  Group 15: Diagnostic Information....403
    PowerTech Plus™ 4.5 L and 6.8 L (4045 and 6068) John Deere Engines....412
    Engine Will Not Crank....403
    Engine Coolant Temperature Above Normal....403
    Engine Coolant Temperature Below Normal....403
  Group 25: Tests....403
    Fuel Line Leakage Test....420
    Air Intake System Leakage Test....421
    Air Filter Restriction Switch Test....424
    Engine Slow and Fast Idle Speed Check....427
Section 9015: Electrical System....428
  Group 05: System Information....428
    Electrical Diagram Information....437
  Group 10: System Diagrams....428
    Fuse Specifications....444
    System Functional Schematic, Wiring Diagrams and Component Locations Legend....446
    System Functional Schematic and Section Legend....452
    Cab Roof Harness (W9) Component Location....463
    Cab Roof Harness (W9) Wiring Diagram....465
    Load Center Harness (W10) Component Location....467
    Load Center Harness (W10) Wiring Diagram....469
    Engine Interface Harness (W11) Component Location....472
    Engine Interface Harness (W11) Wiring Diagram....474
    Engine Harness (W12) Component Location....476
    Engine Harness (W12) Wiring Diagram....478
    Transmission Harness (W13) Component Location....480
    Transmission Harness (W13) Wiring Diagram....482
    Hydraulic Reservoir Harness (W14) Component Location....483
    Hydraulic Reservoir Harness (W14) Wiring Diagram....484
    Fuel Sensor and Backup Alarm Harness (W15) Component Location....485
    Fuel Sensor and Backup Alarm Harness (W15) Wiring Diagram....486
    Radio Harness (W17) Component Location....487
    Radio Harness (W17) Wiring Diagram....488
    Secondary Steering Harness (W19) Component Location....489
    Secondary Steering Harness (W19) Wiring Diagram....490
    Grapple Rotate and Open/Close Harness (W24) Component Location—Pilot Control....492
    Grapple Rotate and Open/Close Harness (W24) Wiring Diagram—Pilot Control....494
    Grapple Rotate Harness (W25) Component Location—Mechanical Linkage....495
  Group 15: Sub-System Diagnostics....428
    Power and Charging Circuits Theory of Operation....500
    Start and Park Circuits Theory of Operation....504
    Engine Circuits (6.8 Liter Level 14 ECU) Theory of Operation....508
    Standard Display Monitor Circuits Theory of Operation....514
    Transmission Control Unit (TCU) Theory of Operation....520
    Differential Lock Circuits Theory of Operation....525
    Transmission Lock-Up Circuits Theory of Operation....526
    Grapple Pilot Control Circuits Theory of Operation....527
    Secondary Steering Circuits Theory of Operation....528
    Dual Mode Steer Circuits Theory of Operation....529
    Fan Reverse and Horn Circuits Theory of Operation....530
    Windshield Washer and Wiper Circuits Theory of Operation....531
    A/C and Precleaner Circuits Theory of Operation....532
    Heater and Blower Circuits Theory of Operation....533
    Work Lights Circuits Theory of Operation....534
    Deluxe Work Lights Circuits Theory of Operation....535
    Air Seat and Dome Light Circuits Theory of Operation....536
  Group 16: Monitor Operation....429
    Standard Display Monitor (SDM) Operation....541
    Standard Display Monitor (SDM) Menu Structure—Service Mode....568
    Standard Display Monitor (SDM)—Temperature Format....549
    Standard Display Monitor (SDM)—Change Units....572
    Standard Display Monitor (SDM)—Hide—Unhide Main Menu....552
  Group 20: References....429
    Battery Specifications....555
    Diagnose Battery Malfunctions....556
    Check Battery Electrolyte Level and Terminals....557
    Service ADVISOR™ Diagnostic Application....560
    Reading Diagnostic Trouble Codes with Service ADVISOR™ Diagnostic Application....561
    Service ADVISOR™ Connection Procedure....562
    Intermittent Diagnostic Trouble Code (DTC) Diagnostics....565
    Programming Standard Display Monitor Temperature Format....566
    Standard Display Monitor (SDM) Menu Structure—Service Mode....568
    Standard Display Monitor (SDM)—Change Units....572
    Standard Display Monitor (SDM)—Hide/Unhide Main Menu....573
    Historical Diagnostic Trouble Code Retrieval....575
    Diagnostic Trouble Codes (DTC) Quick Reference List....577
    Diagnostic Trouble Codes (DTC)—General Information....588
    Calibration of Transmission Control Unit (TCU)....589
    Transmission Diagnostic Trouble Codes—Limp Home Mode....593
    Troubleshooting Transmission Gear Solenoid Diagnostic Trouble Codes....594
    Program Controller....596
    CAN Circuit Test....597
    Secondary Steering Controller Bench Test....601
    Standard Display Monitor (SDM) Test....602
    Two-Wire Sensor Circuit Check Using Monitor Display Unit or SERVICE ADVISOR SERVICE ADVISOR is a trademark of Deere & Company....430
    Three-Wire Sensor Circuit Check Using Monitor Display Unit or SERVICE ADVISOR SERVICE ADVISOR is a trademark of Deere & Company....430
    Electrical Component Specification....606
    Relay Test....609
    Diode Test....611
    Diode Module Test....612
    Remove and Install Transmission Control Unit (TCU)....614
    Remove and Install Engine Control Unit (ECU)....616
    Remove and Install Single Lever Pilot Control Relays....617
    Connector Terminal Test....618
    Replace DEUTSCH DEUTSCH is a trademark of Deutsch Co. Rectangular or Triangular Connectors....430
    Replace DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Connectors....430
    Install DEUTSCH DEUTSCH is a trademark of the Deutsch Co. Contact....430
    Replace WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Connector....430
    Replace SURE-SEAL SURE-SEAL is a trademark of ITT Cannon Electric. Connector with WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Connector....430
    Install WEATHER PACK WEATHER PACK is a trademark of Packard Electric. Contact....430
    Remove Connector Body from Blade Terminals....633
    Crimper Tool For Transmission Control Unit Connector—Operation....634
    Crimper Tool For Transmission Control Unit Connector—Remove And Install Die Set....635
    Crimper Tool For Transmission Control Unit Connector—Contact Support Adjustment....637
    Crimper Tool For Transmission Control Unit Connector—Crimping Procedure....638
    Crimper Tool For Transmission Control Unit Connector—Crimp Height Inspection....641
    Crimper Tool For Transmission Control Unit Connector—Crimp Height Adjustment....642
    Replace Transmission Control Unit Connector Terminals....644
    Cinch CP Connector Assemble....646
    Cinch CP Connector Terminal Removal....653
    Cinch CP Connector Terminal Hand Crimp Process....656
Section 9020: Power Train....660
  Group 05: Theory of Operation....660
    Power Train Component Overview....664
    DF180 Series Powershift Transmission....665
    TeamMate Axles....666
    Transmission Operation....667
    Transmission Component Identification....668
    Transmission Diagram....670
    Lockup Torque Converter Operation....672
    Transmission Hydraulic System Operation....843
    Transmission Charge Pump Operation....677
    Transmission Filter Bypass Valve Operation....679
    Transmission Control Valve Port Identification....681
    Transmission Proportional Solenoid Valves Identification....683
    Transmission Control Valve Operation....685
    Control Valve-to-Front Housing Oil Passage Identification....687
    Transmission Pressure Regulator Valve Operation....688
    Park Brake and Differential Lock Control Valve....690
    Park Brake Control Circuit....692
    Park Brake Manual Release Operation....697
    Differential Lock Control Circuit....699
  Group 15: Diagnostic Information....660
    Transmission Overfills With Oil....660
    Transmission Clutch Slippage....660
    Transmission Shifts Too Slow....660
    Transmission Shifts Too Fast....660
    Park Brake Activates When Service Brakes Are Applied (No Load on Engine While in Gear)....660
    Machine Will Not Move (Load on Engine or Engine Stalls When Shifted Into Gear)....660
    Machine Creeps in Neutral (Load Put on Engine When Service Brakes Are Applied)....660
    Transmission System Overheats....660
    Lube Pressure Low, Transmission Charge Pressure Normal....660
    Excessive Transmission Noise Under Load or No Load....660
    Machine Makes Excessive Transmission Noise When Moving....660
    Erratic Transmission Oil Pressure....661
    Excessive Transmission Oil Pressure....661
    Low Transmission Oil Pressure in All Gears....661
    Low Transmission Oil Pressure in One Gear but Correct in Other Gears....661
    Transmission Breather Oil Leakage....661
    Filter or Filter Oil Lines Blow Out....661
    Low Lube Pressure (Not All Gears)....661
    Excessive Lube Pressure (Not All Gears)....661
    Low Transmission Oil Cooler Inlet Pressure, Correct Lube Pressure....661
    Low Transmission Oil Cooler Inlet Pressure and Lube Pressure....661
    Machine Lacks Power....661
    Excessive Torque Converter Noise (Under Load or No Load)....661
    Torque Converter Stall, RPM Too Low....661
    Torque Converter Stall, RPM Too High....661
    Machine Will Not Move in Any Gear and Park Brake Indicator Is On....661
    Excessive Machine Vibration....661
    Excessive Driveline Vibration....661
    Park Brake Comes On While Using a Hydraulic Function....661
    Park Brake Engages While Machine Is Moving....661
    Park Brake Will Not Release....661
    No Differential Lock Operation....661
    Differential Lock Slippage....661
    Excessive Differential or Axle Noise....661
    Oil Seepage from Outer Axle Seal....661
    Power Train Component Location....790
  Group 20: Adjustments....661
    Park Brake Manual Release Procedure....797
  Group 25: Tests....661
    Transmission Oil Warm-Up Procedure....803
    Transmission Pump Flow Test....804
    Transmission System Pressure Test....807
    Transmission Lube Circuit Pressure Test....809
    Transmission Control Circuit Pressure Test....811
    Converter-In Pressure Test....814
    Converter-Out Pressure Test....816
    Torque Converter Pressure Relief Test....818
    Converter-Out Flow Test....822
    Lockup Torque Converter Clutch Pressure Test....825
    Torque Converter Stall Speed Test....827
    Park Brake Pressure Test....829
    Differential Lock Pressure Test....833
Section 9025: Hydraulic System....838
  Group 05: Theory of Operation....838
    Hydraulic System Operation....843
    Main Pump and Reservoir Hydraulic Circuit Operation....844
    Cooling Loop and Reversing Fan Circuit Operation....846
    Service Brake Hydraulic Circuit Operation....848
    Steering and Secondary Steering Hydraulic Circuit Operation....850
    Dual Mode Steering Hydraulic Circuit Operation....852
    Pilot Control Hydraulic Circuit Operation....855
    Grapple Rotate Hydraulic Circuit Operation....858
    Main Hydraulic Pump and Pressure Compensator Operation....859
    Brake Accumulator Operation....862
    Hydraulic Reservoir Operation....863
    Hydraulic Oil Return Filter Operation....865
    Hydraulic Fan Filter Operation....867
    Brake Valve Operation....868
    Priority Valve Operation....871
    Steering Valve and System Operation....875
    Secondary Steering Inlet Manifold Operation....877
    120 Series Cylinder Operation....879
    Blade Manually Operated Valve Section Operation....881
    Arch and Boom Pilot Operated Valve Section Operation....883
    System Relief Valve Operation....884
    Circuit Relief Valve—Adjustable with Anticavitation Operation....886
    Circuit Relief Valve—Non-Adjustable Operation....888
    Grapple Tong Flow Divider Operation....889
    Pilot Controller Operation....891
    Grapple Rotate Solenoid Valve Operation....892
    Dual Mode Steering Solenoid Valve Operation....894
    Rotary Manifold Operation....896
    Fan Pump Operation....897
    Fan Variable Speed and Reversing Manifold Operation....900
    Reversing Fan Motor Operation....902
    Hydraulic Oil Cooler Operation....903
    Cab Tilt Circuit Operation....904
  Group 15: Diagnostic Information....839
    Hydraulic System Overheating....839
    Hydraulic Function Drifts Down....839
    No Steering or Hydraulic Functions....839
    Hydraulic Functions Slow....839
    Individual Functions Slow (Cycle Time Slow)....839
    No Hydraulic Functions (Steering Normal)....839
    Low Hydraulic Power (Pressure)....839
    Excessive Hydraulic Pump Noise....839
    Function Powers Up or Down Without Moving Lever....839
    Grapple Rotate Stalls....839
    Grapple Rotates Too Fast....839
    Grapple Rotates Slow....839
    Tongs Do Not Close Evenly....839
    Tongs Open or Close Slowly....839
    Grapple Loses Logs During Skidding....839
    Transmission Overfills With Oil....839
    No Steering (Hydraulic Functions Normal)....839
    Steering Valve Does Not Center....839
    Steering Valve Locks Up....839
    Frames Turn Wrong Direction....839
    Steering Slow or Hard....839
    Steering Erratic or Spongy....839
    Machine Wanders....839
    Quick Steer Mode Not Engaging....839
    Quick Steer Mode Not Disengaging....839
    Quick Steer Mode Engaging When Disengaged....839
    Poor or No Brakes (Other Hydraulic Systems Normal)....839
    Brakes Overly Aggressive....839
    Brakes Drag....839
    Brakes Chatter or Noisy....839
    Delay in Braking....840
    Fan Does Not Reach Full Speed (Both Directions)....840
    Fan Does Not Reach Full Speed (Forward Direction Only)....840
    Fan Does Not Reach Full Speed (Reverse Direction Only)....840
    Fan Does Not Spin (Both Directions)....840
    Fan Does Not Slow Down Before Reversing....840
    High Cooler Pressure or Pressure Spikes....840
    High Return Pressure at Fan Reversing Manifold Port T....840
    High Flow From Fan Motor Case Drain....840
    Fan Pump is Cavitating....840
    Hydraulic System Component Location Cable Skidder Manual with Lock Up Torque Converter....983
    Hydraulic System Component Location Grapple Skidder Dual Function Pilot with Lock Up Torque Converter....985
    Hydraulic System Schematic....987
  Group 20: Adjustments....840
    Service Brake Pedal Adjustment....992
    Service Brake Inspection and Adjustment....993
    Service Brake Bleeding Procedure....994
    Grapple Damper Adjustment....998
  Group 25: Tests....840
    D15032NU Vacuum Pump Installation....1002
    JT02156A Digital Pressure and Temperature Analyzer Installation....1003
    JT07148 Digital Hydraulic Tester....1005
    Hydraulic Oil Warm-Up Procedure....1006
    Main Hydraulic Pump Identification....1007
    Main Hydraulic Pump Standby Pressure Test....1008
    Main Hydraulic Pump Flow Test....1011
    Main Hydraulic Pump Leakage Test....1014
    Pressure Reducing Valve Pressure Test....1017
    Pilot Controller Pressure Test....1019
    Priority Valve and Relief Valve Pressure Test....1022
    Priority Valve "LS" Port Flow Test....1025
    Priority Valve and Relief Valve Leakage Test....1027
    System and Circuit Relief Valve Pressure Test....1029
    Hydraulic Component Leakage Test....1034
    Cylinder Leakage Test....1038
    Cylinder Drift Test....1040
    Dual Mode Steering Engagement Pressure Test....1042
    Grapple Rotate Motor Crossover Relief Valve Pressure Test....1045
    Grapple Rotate Solenoid Valve Neutral Leakage Test....1047
    Grapple Tong Flow Divider Relief Valve Test....1049
    Rotary Manifold Center Seal Leakage Test....1051
    Rotary Manifold Drain and Lower Seal Leakage Test....1053
    Service Brake Valve and Accumulator Pressure Test....1055
    Service Brake Valve Leakage Test....1058
    Steering Valve Neutral Leakage Test....1061
    Hydraulic Functions Cycle Time Test....1063
    Hydraulic Oil Filter Inspection Procedure....1065
    Cooling Fan Circuit Test Procedure....1066
    Fan Motor Case Drain Test....1071
    Secondary Steering Operation Test....1073
Section 9030: Winch....1076
  Group 05: Theory of Operation....1076
    John Deere 4000 and 6000 Winches....1078
  Group 15: Diagnostic Information....1076
    Winch Control Lever Effort Excessive....1076
    Winch Clutch Slips....1076
    Winch Free Spool Effort Excessive....1076
    Winch Brake Will Not Hold....1076
    Winch Will Not Free Spool....1076
    Transmission Oil Level Varies Excessively....1076
    Winch Makes Grinding Noise When Going from FREE SPOOL to BRAKE OFF....1076
    Winch Component Location....1094
    Winch Hydraulic Schematic....1095
  Group 20: Adjustments....1076
    Winch Control Cable Adjustment Check....1097
    Brake Off Adjustment—4000 Series Winch....1098
    Brake Off Adjustment—6000 Series Winch....1103
  Group 25: Tests....1076
    Winch System Pressure Test....1112
    Winch Leakage Test....1117
    Winch Drum Rolling Drag Test....1121
Section 9031: Heating and Air Conditioning....1123
  Group 05: Theory Of Operation....1123
    Air Conditioning System Cycle Of Operation....1126
  Group 15: Diagnostic Information....1123
    Diagnose Air Conditioning System Malfunctions....1123
    Diagnose Heater System Malfunctions....1123
    Air Conditioning System Component Location....1153
  Group 25: Tests....1123
    Air Conditioning System Checks....1158
    R134a Air Conditioning System Test....1161
    Air Conditioner Freeze Control Switch Test....1165
    Air Conditioning Compressor Clutch Test....1167
    Air Conditioning High/Low Pressure Switch Test....1168
    Air Conditioning Expansion Valve Test....1170
    Refrigerant Leak Test....1173
    
John Deere 848H Skidder ( —630435)  Diagnosis and Test Service Technical Manual (TM10287)