Complete Diagnosis & Tests Technical Manual with electrical wiring diagrams for John Deere 848H Skidder (S.N. 630436— ), with workshop information to maintain, diagnose, and rebuild like professional mechanics.

John Deere 848H Skidder (S.N. 630436— ) 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.

TM11798 - John Deere 848H Skidder (S.N. 630436— ) Technical Manual  - Operation and Test.pdf
tm11803 - John Deere Débusqueur 848H (630436— ).pdf
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tm11808 - John Deere Remolcador de troncos 848H (630436— ).pdf

Category: Operation and Test
Language: English Spanish French Russian
Published on 2018/09/13

PRODUCT DETAILS:
Total Pages: 921 pages
File Format: PDF (bookmarked, ToC, Searchable, Printable)
Language: English

TABLE OF CONTENTS
Section 9000: General Information...23
  Group 01: Safety...23
    Recognize Safety Information...26
    Follow Safety Instructions...27
    Operate Only If Qualified...28
    Wear Protective Equipment...29
    Avoid Unauthorized Machine Modifications...30
    Inspect Machine...31
    Stay Clear of Moving Parts...32
    Avoid High-Pressure Fluids...33
    Avoid High-Pressure Oils...34
    Do Not Use Starting Fluid...35
    Work In Ventilated Area...36
    Prevent Fires...37
    Prevent Battery Explosions...38
    Handle Chemical Products Safely...39
    Decommissioning — Proper Recycling and Disposal of Fluids and Components...40
    Prepare for Emergencies...41
    Clean Debris from Machine...42
    Use Steps and Handholds Correctly...43
    Start Only From Operator's Seat...44
    Use and Maintain Seat Belt...45
    Prevent Unintended Machine Movement...46
    Avoid Work Site Hazards...48
    Operate Machine Safely...49
    Keep Riders Off Machine...50
    Avoid Backover Accidents...51
    Avoid Machine Tip Over...52
    Operating on Slopes...54
    Operating or Traveling On Public Roads...55
    Inspect and Maintain ROPS...56
    Keep the Operator Protective Structure (OPS) in Place...57
    Add and Operate Attachments Safely...58
    Park and Prepare for Service Safely...59
    Service Tires Safely...61
    Service Cooling System Safely...62
    Service Accumulator Systems Safely...63
    Remove Paint Before Welding or Heating...64
    Make Welding Repairs Safely...65
    Drive Metal Pins Safely...66
Section 9001: Diagnostic Trouble Codes (DTC)...67
  Group 10: Engine Control Unit (ECU) Diagnostic Trouble Codes...76
    Engine Control Unit (ECU) Diagnostic Trouble Codes...76
    000091.09 - CAN Throttle Message Missing or Late...67
    000190.00 - Engine Overspeed Extreme...67
    000190.16 - Engine Overspeed Moderate...67
    000676.03 - Glow Plug Relay Out of Range High...67
    000676.05 - Glow Plug Relay Out of Range Low...67
    001075.05 - Low Pressure Fuel Pump Out of Range Low...67
    001075.06 - Low Pressure Fuel Pump Out of Range High...67
    002003.09 - TCU Communication Data Error...67
    002003.13 - TCU Communication Calibrate Error...67
    002017.09 - SDM Communication Data Error...67
    002017.13 - SDM Communication Calibrate Error...67
  Group 20: Transmission Control Unit (TCU) Diagnostic Trouble Codes...103
    Transmission Control Unit (TCU) Diagnostic Trouble Codes...103
    000158.03 - Switched Power Out of Range High...67
    000161.02 - Transmission Input Speed Sensor Erratic or Bad Data...67
    000177.00 - Transmission Oil Temperature High...67
    000177.03 - Transmission Oil Temperature Sensor Out of Range High...67
    000177.04 - Transmission Oil Temperature Sensor Out of Range Low...67
    000191.02 - Transmission Output Speed Data Invalid...67
    000525.02 - Shift Parameter Erratic or Bad Data...67
    000774.04 - Bump Up Shift Switch Short to Ground...67
    000775.04 - Bump Down Shift Switch Short to Ground...67
    000777.03 - Lockup Clutch Out of Range High...67
    000777.05 - Lockup Clutch Out of Range Low...67
    003509.04 - Sensor Supply #1 Out of Range Low...67
    003510.04 - Sensor Supply #2 Out of Range Low...67
    003511.04 - Sensor Supply #3 Out of Range Low...67
    003512.04 - Sensor Supply #4 Out of Range Low...67
    522002.31 - Upshift and Downshift Inputs Active...67
    522003.31 - Neutral, Forward, and Reverse Inputs Passive...67
    522004.04 - Park and Not Park Active Out of Range Low...68
    522005.03 - Park and Not Park Active Out of Range High...68
    522151.31 - Shifter Neutral and Forward Inputs Active...68
    522153.31 - Shifter Neutral and Reverse Inputs Active...68
    522169.04 - Gear Enable/Differential Lock Switch Out of Range...68
    522252.00 - Clutch #1 Hold Value Out of Range High...68
    522252.01 - Clutch #1 Hold Value Out of Range Low...68
    522253.00 - Clutch #2 Hold Value Out of Range High...68
    522253.01 - Clutch #2 Hold Value Out of Range Low...68
    522254.00 - Clutch #3 Hold Value Out of Range High...68
    522254.01 - Clutch #3 Hold Value Out of Range Low...68
    522255.00 - Clutch #4 Hold Value Out of Range High...68
    522255.01 - Clutch #4 Hold Value Out of Range Low...68
    522256.00 - Clutch A Hold Value Out of Range High...68
    522256.01 - Clutch A Hold Value Out of Range Low...68
    522257.00 - Clutch B Hold Value Out of Range High...68
    522257.01 - Clutch B Hold Value Out of Range Low...68
    522258.00 - Clutch C Hold Value Out of Range High...68
    522258.01 - Clutch C Hold Value Out of Range Low...68
    522259.00 - Clutch D Hold Value Out of Range High...68
    522259.01 - Clutch D Hold Value Out of Range Low...68
    522284.02 - Transmission Cylinder Speed Data Invalid...68
    522398.12 - Not Park and Park Pressure Inputs Active...68
    522414.03 - Clutch D Out of Range High...68
    522414.05 - Clutch D Out of Range Low...68
    522507.14 - Calibrate While Inching...68
    523655.03 - Forward and Reverse Inputs Active...68
    523689.04 - Differential Lock Short to Ground...68
    523697.04 - Inching Pedal Top of Clutch Switch Short to Ground...68
    523967.09 - Top of Clutch Input Passive Abnormal Data Rate...68
    523699.31 - Speed Clutch Slippage...68
    523700.16 - Inching Pedal Limit Exceeded...68
    523700.31 - Directional Clutch Slippage...68
    523708.02 - Inching Pedal Switch Module Data Invalid...69
    523708.04 - Inching Pedal Bottom of Clutch Switch Short to Ground...69
    523712.31 - Park Brake Not Set During Calibration...69
    523717.31 - Holding Clutch Unexpected Response...69
    523718.31 - Cylinder Speed Invalid During Calibration...69
    523720.00 - Clutch D Fill Out of Range High...69
    523720.01 - Clutch D Fill Out of Range Low...69
    523721.00 - Clutch C Fill Out of Range High...69
    523721.01 - Clutch C Fill Out of Range Low...69
    523722.00 - Clutch B Fill Out of Range High...69
    523722.01 - Clutch B Fill Out of Range Low...69
    523723.00 - Clutch A Fill Out of Range High...69
    523723.00 - Clutch A Fill Out of Range Low...69
    523724.00 - Clutch 4 Fill Out of Range High...69
    523724.01 - Clutch 4 Fill Out of Range Low...69
    523725.00 - Clutch 3 Fill Out of Range High...69
    523725.01 - Clutch 3 Fill Out of Range Low...69
    523726.00 - Clutch 2 Fill Out of Range High...69
    523726.01 - Clutch 2 Fill Out of Range Low...69
    523727.00 - Clutch 1 Fill Out of Range High...69
    523727.01 - Clutch 1 Fill Out of Range Low...69
    523728.31 - Unexpected Cylinder Speed REV Calibration...69
    523729.31 - Unexpected Cylinder Speed FWD Calibration...69
    523730.31 - No Cylinder Speed Calibration...69
    523731.31 - Output Speed During Calibration...69
    523732.31 - Engine Speed Too Low During Calibration...69
    523733.31 - Engine Speed Too High During Calibration...69
    523747.14 - Not Park and Park Pressure Inputs Passive...69
    523761.03 - Clutch 4 Out of Range High...69
    523761.05 - Clutch 4 Out of Range Low...69
    523762.03 - Clutch 3 Out of Range High...69
    523762.05 - Clutch 3 Out of Range Low...69
    523763.03 - Clutch 2 Out of Range High...69
    523763.05 - Clutch 2 Out of Range Low...70
    523764.03 - Clutch 1 Out of Range High...70
    523764.05 - Clutch 1 Out of Range Low...70
    524029.00 - Inching Pedal Sensor Short to Power...70
    524029.01 - Inching Pedal Sensor Open or Short to Ground...70
    524127.04 - Declutch Pressure Switch Out of Range Low...70
    524271.03 - Clutch C Out of Range High...70
    524271.05 - Clutch C Out of Range Low...70
    524272.03 - Clutch B Out of Range High...70
    524272.05 - Clutch B Out of Range Low...70
    524273.03 - Clutch A Out of Range High...70
    524273.05 - Clutch A Out of Range Low...70
  Group 30: Standard Display Monitor (SDM) Diagnostic Trouble Codes...334
    Standard Display Monitor (SDM) Diagnostic Trouble Codes...334
    000096.03 - Fuel Level Sensor Out of Range High...70
    000096.04 - Fuel Level Sensor Out of Range Low...70
    000107.00 - Engine Air Filter Restriction Data Above Normal...70
    000126.00 - Transmission Oil Filter Restriction Data Above Normal...70
    000158.00 - System Voltage Data Above Normal...70
    000158.01 - System Voltage Data Below Normal...70
    001508.00 - Hydraulic Reservoir Oil Temperature Sensor Data Above Normal...70
    001508.03 - Hydraulic Reservoir Oil Temperature Sensor Out of Range High...70
    001508.04 - Hydraulic Reservoir Oil Temperature Sensor Out of Range Low...70
    001508.16 - Hydraulic Oil Temp Sensor Moderately High Value...70
    001713.00 - Hydraulic Oil Filter Restriction Data Above Normal...70
    002000.09 - ECU Communication Data Error...70
    002000.13 - ECU Communication Calibrate Error...70
    002003.09 - TCU Communication Data Error...70
  Group 40: Flex Load Controller (FLC) Diagnostic Trouble Codes...70
    000111.01 - Engine Coolant Level Low...70
    000589.01 - Alternator Speed Slow...70
    000746.05 - Differential Lock Open Circuit...70
    000746.06 - Differential Lock Short to Ground...70
    000977.05 - Reversing Fan Open Circuit...71
    000977.06 - Reversing Fan Short to Ground...71
    001071.03 - Proportional Fan Solenoid Short to Power...71
    001071.05 - Proportional Fan Solenoid Open Circuit or Short to Ground...71
    001550.05 - Air Conditioner Clutch Open Circuit...71
    001550.06 - Air Conditioner Clutch Short to Ground...71
    002000.09 - CAN Communication Lost for ECU...71
    002017.09 - CAN Communication Lost for SDM...71
    002141.09 - CAN Communication Lost for SSM...71
    522170.04 - Tong Squeeze Switch Short to Ground...71
    522171.04 - Tong Close Switch Short to Ground...71
    522172.04 - Tong Open Switch Short to Ground...71
    522174.04 - Grapple Rotate CCW Switch Short to Ground...71
    522175.04 - Grapple Rotate CW Switch Short to Ground...71
    522176.04 - Secondary Steering Pressure Switch Short to Ground...71
    522177.05 - Tong Close Solenoid Open Circuit...71
    522177.06 - Tong Close Solenoid Short to Ground...71
    522178.05 - Tong Open Solenoid Open Circuit...71
    522178.06 - Tong Open Solenoid Short to Ground...71
    522179.05 - Grapple Rotate CCW Solenoid Open Circuit...71
    522179.06 - Grapple Rotate CCW Solenoid Short to Ground...71
    522180.05 - Grapple Rotate CW Solenoid Open Circuit...71
    522180.06 - Grapple Rotate CW Solenoid Short to Ground...71
    522311.05 - Rear Washer Pump Open Circuit...71
    522311.06 - Rear Washer Pump Short to Ground...71
    522312.05 - Front Washer Pump Open Circuit...71
    522312.06 - Front Washer Pump Short to Ground...71
    522426.04 - Rear Wiper Park Short to Ground...71
    522427.04 - Front Wiper Park Short to Ground...71
    522433.05 - Rear Wiper Open Circuit...71
    522433.06 - Rear Wiper Short to Ground...71
    522434.05 - Front Wiper Low Speed Open Circuit...71
    522434.06 - Front Wiper Low Speed Short to Ground...71
    522435.05 - Front Wiper High Speed Open Circuit...72
    522435.06 - Front Wiper High Speed Short to Ground...72
    523577.05 - Secondary Steering Open Circuit...72
    523577.06 - Secondary Steering Short to Ground...72
    523795.05 - Dual Mode Steering Open Circuit...72
    523795.06 - Dual Mode Steering Short to Ground...72
    524097.03 - Accelerator Pedal Short to Power...72
    524097.04 - Accelerator Pedal Open or Short to Ground...72
  Group 50: Sealed Switch Module (SSM) Diagnostic Trouble Codes...504
    Sealed Switch Module (SSM) Diagnostic Trouble Codes...504
    002033.09 - SSM Lost Communications...72
    520752.04 - SSM Button 17 Stuck...72
    520752.09 - SSM Button 17 No CAN Message...72
    520753.04 - SSM Button 18 Stuck...72
    520753.09 - SSM Button 18 No CAN Message...72
    520754.04 - SSM Button 19 Stuck...72
    520754.09 - SSM Button 19 No CAN Message...72
    520755.04 - SSM Button 20 Stuck...72
    520755.09 - SSM Button 20 No CAN Message...72
    523335.04 - SSM Button 25 Stuck...72
    523335.09 - SSM Button 25 No CAN Message...72
    523336.04 - SSM Button 24 Stuck...72
    523336.09 - SSM Button 24 No CAN Message...72
    523338.04 - SSM Button 23 Stuck...72
    523338.09 - SSM Button 23 No CAN Message...72
    523339.04 - SSM Button 22 Stuck...72
    523339.09 - SSM Button 22 No CAN Message...72
    523340.04 - SSM Button 21 Stuck...72
    523340.09 - SSM Button 21 No CAN Message...72
    523849.04 - SSM Button 16 Stuck...72
    523849.09 - SSM Button 16 No CAN Message...72
    523850.04 - SSM Button 15 Stuck...72
    523850.09 - SSM Button 15 No CAN Message...72
    523852.04 - SSM Button 14 Stuck...73
    523852.09 - SSM Button 14 No CAN Message...73
    523854.04 - SSM Button 13 Stuck...73
    523854.09 - SSM Button 13 No CAN Message...73
    523855.04 - SSM Button 12 Stuck...73
    523855.09 - SSM Button 12 No CAN Message...73
    523856.04 - SSM Button 11 Stuck...73
    523856.09 - SSM Button 11 No CAN Message...73
    523857.04 - SSM Button 10 Stuck...73
    523857.09 - SSM Button 10 No CAN Message...73
    523858.04 - SSM Button 9 Stuck...73
    523858.09 - SSM Button 9 No CAN Message...73
    523860.04 - SSM Button 8 Stuck...73
    523860.09 - SSM Button 8 No CAN Message...73
    523861.04 - SSM Button 7 Stuck...73
    523861.09 - SSM Button 7 No CAN Message...73
    523862.04 - SSM Button 6 Stuck...73
    523862.09 - SSM Button 6 No CAN Message...73
    523863.04 - SSM Button 5 Stuck...73
    523863.09 - SSM Button 5 No CAN Message...73
    523864.04 - SSM Button 4 Stuck...73
    523864.09 - SSM Button 4 No CAN Message...73
    523865.04 - SSM Button 3 Stuck...73
    523865.09 - SSM Button 3 No CAN Message...73
    523867.04 - SSM Button 2 Stuck...73
    523867.09 - SSM Button 2 No CAN Message...73
    523868.04 - SSM Button 1 Stuck...73
    523868.09 - SSM Button 1 No CAN Message...73
  Group 60: Bump Shift Controller (BSC) Diagnostic Trouble Codes...73
    003651.03 - FNR Sensor Circuit Fault...73
    003651.04 - FNR Sensor Circuit Fault...73
    003651.13 - FNR Sensor Calibration Fault...73
    516205.02 - FNR Signal Data Erratic or Intermittent...73
    003654.03 - FNR Sensor Circuit Fault...74
    003654.04 - FNR Sensor Circuit Fault...74
    003654.13 - FNR Sensor Calibration Fault...74
Section 9005: Operational Checkout...675
  Group 10: Operational Checks...607
    Operational Checkout...675
Section 9010: Engine...742
  Group 05: Theory of Operation...742
    PowerTech Plus™ 6.8L (6068) John Deere Engine—6.8L Tier 3/Stage IIIA...776
    PowerTech Plus™ 6.8L (6068) John Deere Engine—6.8L Stage II...777
    Engine Identification...746
    Coolant Heater Theory of Operation...752
    Engine Fuel System Component Location...754
    Engine Cooling System Component Location...755
    Engine Intake and Exhaust System Tier 3/Stage IIIA Component Location...756
    Engine Intake and Exhaust System Stage II Component Location...757
    Coolant Heater Component Location...758
    Engine Fluid Sample Port Locations...759
    Cold Weather Starting Aid...760
  Group 15: Diagnostic Information...742
    PowerTech Plus™ 6.8L (6068) John Deere Engine—6.8L Tier 3/Stage IIIA...776
    PowerTech Plus™ 6.8L (6068) John Deere Engine—6.8L Stage II...777
    Engine Will Not Crank...742
    Engine Coolant Temperature Above Normal...742
    Engine Coolant Temperature Below Normal...742
    Coolant Heater System Check—If Equipped...742
  Group 25: Tests...742
    PowerTech Plus™ 6.8L (6068) John Deere Engine—6.8L Tier 3/Stage IIIA...776
    PowerTech Plus™ 6.8L (6068) John Deere Engine—6.8L Stage II...777
    Fuel Line Leakage Test...778
    Air Intake System Leakage Test...779
    Air Filter Restriction Switch Test...782
    Intake Manifold Pressure Test—Turbocharger Boost—6.8L Stage II...785
    Engine Slow and Fast Idle Speed Check...787
Section 9015: Electrical System...788
  Group 05: System Information...788
    Electrical Diagram Information...797
  Group 10: System Diagrams...788
    Fuse Specifications...807
    System Functional Schematic, Wiring Diagrams, and Component Locations Legend...812
    System Functional Schematic and Section Legend...820
    Power and Ground Cables Component Location...830
    Load Center Harness (W10) Component Location...831
    Load Center Harness (W10) Wiring Diagram...833
    Engine Interface Harness (W11) Component Location...838
    Engine Interface Harness (W11) Wiring Diagram...839
    Engine Harness (W12) Component Location...841
    Engine Harness (W12) Wiring Diagram...844
    Transmission Harness (W13) Component Location...847
    Transmission Harness (W13) Wiring Diagram...848
    Hydraulic Reservoir Harness (W14) Component Location...849
    Hydraulic Reservoir Harness (W14) Wiring Diagram...851
    Fuel Sensor and Backup Alarm Harness (W15) Component Location...853
    Fuel Sensor and Backup Alarm Harness (W15) Wiring Diagram...854
    Cab Roof Harness (W16) Component Location...855
    Cab Roof Harness (W16) Wiring Diagram...857
    Radio Harness (W17) Component Location—If Equipped...860
    Radio Harness (W17) Wiring Diagram—If Equipped...861
    Secondary Steering Harness (W19) Component Location—If Equipped...862
    Secondary Steering Harness (W19) Wiring Diagram—If Equipped...864
    JDLink™ System Harnesses Component Location—MIG/GTT...865
    JDLink™ System Harnesses Component Location—MTG/SAT...867
    JDLink™ System Wiring Diagrams—MIG/GTT...869
    JDLink™ System Wiring Diagrams—MTG/SAT...870
    Pilot Control Harness (W24) Component Location...872
    Pilot Control Harness (W24) Wiring Diagram...873
    Diesel Fired Coolant Heater (DFCH) Harnesses (W25 and W26) Component Location—If Equipped...874
    Diesel Fired Coolant Heater (DFCH) Harnesses (W25 and W26) Wiring Diagram—If Equipped...876
    Forward, Neutral, and Reverse (FNR) Shift Lever Harness (W28) Component Location (S.N. 661906— )...878
    Forward, Neutral, and Reverse (FNR) Shift Lever Harness (W28) Wiring Diagram (S.N. 661906— )...879
  Group 15: Sub-System Diagnostics...789
    Power and Charge Circuits Theory of Operation...885
    Start Circuit Theory of Operation...890
    Park Brake Circuit Theory of Operation...894
    Controller Area Network (CAN) Circuit Theory of Operation...898
    Engine Control Unit (ECU) Circuit Theory of Operation...900
    Standard Display Monitor (SDM) Circuit Theory of Operation...912
    Transmission Control Unit (TCU) Circuit Theory of Operation...916
    JDLink™ Circuit Theory of Operation—If Equipped...927
    Lockup Torque Converter Circuit Theory of Operation...929
    Declutch Circuit Theory of Operation...931
    Differential Lock Circuit Theory of Operation...933
    Proportional Fan Speed and Reversing Fan Circuits Theory of Operation...936
    Grapple Control Circuit Theory of Operation...940
    Secondary Steering Circuit Theory of Operation...943
    Dual Mode Steer Circuit Theory of Operation...947
    Windshield Washer and Wiper Circuits Theory of Operation...949
    Heater, Air Conditioner, and Precleaner Circuits Theory of Operation...953
    Work Lights Circuits Theory of Operation...958
  Group 16: Monitor Operation...789
    Standard Display Monitor (SDM)—Service Mode...963
    Standard Display Monitor (SDM)—Clear Codes...965
    Standard Display Monitor (SDM)—Transmission Temperature...966
    Standard Display Monitor (SDM)—Transmission Calibration...967
    Standard Display Monitor (SDM)—Engine Temperatures...968
    Standard Display Monitor (SDM)—Engine Pressures...969
    Standard Display Monitor (SDM)—Engine Speeds...970
    Standard Display Monitor (SDM)—Engine Performance...971
    Standard Display Monitor (SDM)—Engine Live Values...972
    Standard Display Monitor (SDM)—Fan Diagnostics...973
    Standard Display Monitor (SDM)—Monitor Diagnostics...974
    Standard Display Monitor (SDM)—Software...975
    Standard Display Monitor (SDM)—Hide Menu...976
    Standard Display Monitor (SDM)—Restore Defaults...977
    Standard Display Monitor (SDM)—Reverse Fan Cycle...978
    Standard Display Monitor (SDM)—Machine Option...979
  Group 20: References...790
    Electrical Component Specifications...985
    JDLink™ System Identification...990
    JDLink™ Connection Procedure—If Equipped...993
    Service ADVISOR™ Connection Procedure...994
    Service ADVISOR™ Diagnostic Application...997
    Reading Diagnostic Trouble Codes (DTCs) With Service ADVISOR™ Diagnostic Application...998
    Intermittent Diagnostic Trouble Code (DTC) Diagnostics...1001
    Transmission Diagnostic Trouble Codes—Limp Home Mode and Inchless Power Shift...1002
    Controller Area Network (CAN) Circuit Test...1003
    Bump Shifter Test...1007
    Accelerator Pedal Sensor Test...1009
    Alternator Test...1011
    Relay Test...1013
    Diode Test...1016
    Battery Test Procedure...1017
    Transmission Control Unit (TCU) Calibration...1018
    Troubleshooting Transmission Gear Solenoid...1020
    Electronic Controllers Remove and Install...1021
    Connector Terminal Test...1023
    Disconnect Tab Retainer Connectors...1026
    Disconnecting Spring Wire Clip Connectors...1027
    Remove Connector Body from Blade Terminals...1028
    Replace Metri-Pack® (Pull Type) Connectors...1029
    Replace Metri-Pack® (Push Type) Connectors...1031
    Replace Metri-Pack® Connectors...1032
    Replace DEUTSCH® Circular Connectors...1034
    Replace DEUTSCH® Rectangular or Triangular Connectors...1036
    Install DEUTSCH® Contact...1038
    Replace WEATHER PACK® Connector...1040
    Install WEATHER PACK® Contact...1042
    Replace CINCH™ Connectors...1044
    Install CINCH™ Contact...1046
    Repair 32 and 48 Way CINCH™ Connectors...1048
Section 9020: Power Train...1052
  Group 05: Theory of Operation...1052
    Power Train Component Overview...1056
    DF180 Series Powershift Transmission...1057
    TeamMate Axles...1058
    Transmission Operation...1059
    Transmission Component Identification...1060
    Lockup Torque Converter Operation...1062
    Transmission Hydraulic System Operation...1229
    Transmission Charge Pump Operation...1067
    Transmission Filter Bypass Valve Operation...1069
    Transmission Control Valve Port Identification...1071
    Transmission Proportional Solenoid Valves Identification...1073
    Transmission Control Valve Operation...1075
    Control Valve-to-Front Housing Oil Passage Identification...1077
    Transmission Pressure Regulator Valve Operation...1078
    Park Brake and Differential Lock Control Valve...1080
    Park Brake Control Circuit...1082
    Park Brake Manual Release Operation...1087
    Differential Lock Control Circuit...1088
  Group 15: Diagnostic Information...1052
    Transmission Overfills With Oil...1052
    Transmission Clutch Slippage...1052
    Transmission Shifts Too Slow...1052
    Transmission Shifts Too Fast...1052
    Park Brake Activates When Service Brakes Are Applied (No Load on Engine While in Gear)...1052
    Machine Will Not Move (Load on Engine or Engine Stalls When Shifted Into Gear)...1052
    Machine Creeps in Neutral (Load Put on Engine When Service Brakes Are Applied)...1052
    Transmission System Overheats...1052
    Lube Pressure Low, Transmission Charge Pressure Normal...1052
    Excessive Transmission Noise Under Load or No Load...1052
    Machine Makes Excessive Transmission Noise When Moving...1052
    Erratic Transmission Oil Pressure...1052
    Excessive Transmission Oil Pressure...1053
    Low Transmission Oil Pressure in All Gears...1053
    Low Transmission Oil Pressure in One Gear but Correct in Other Gears...1053
    Transmission Breather Oil Leakage...1053
    Filter or Filter Oil Lines Blow Out...1053
    Low Lube Pressure (Not All Gears)...1053
    Excessive Lube Pressure (Not All Gears)...1053
    Low Transmission Oil Cooler Inlet Pressure, Correct Lube Pressure...1053
    Low Transmission Oil Cooler Inlet Pressure and Lube Pressure...1053
    Machine Lacks Power...1053
    Excessive Torque Converter Noise (Under Load or No Load)...1053
    Torque Converter Stall, RPM Too Low...1053
    Torque Converter Stall, RPM Too High...1053
    Machine Will Not Move in Any Gear and Park Brake Indicator Is On...1053
    Excessive Machine Vibration...1053
    Excessive Driveline Vibration...1053
    Park Brake Comes On While Using a Hydraulic Function...1053
    Park Brake Engages While Machine Is Moving...1053
    Park Brake Will Not Release...1053
    No Differential Lock Operation...1053
    Differential Lock Slippage...1053
    Excessive Differential or Axle Noise...1053
    Oil Seepage From Outer Axle Seal...1053
    Power Train Component Location...1178
  Group 20: Adjustments...1053
    Park Brake Manual Release Procedure...1183
  Group 25: Tests...1053
    JT02156A Digital Pressure/Temperature Analyzer Installation...1187
    Transmission Oil Warmup Procedure...1188
    Transmission Pump Flow Test...1189
    Transmission System Pressure Test...1192
    Transmission Lube Circuit Pressure Test...1194
    Transmission Control Circuit Pressure Test...1196
    Converter-In Pressure Test...1199
    Converter-Out Pressure Test...1201
    Torque Converter Pressure Relief Test...1203
    Converter-Out Flow Test...1207
    Lockup Torque Converter Clutch Pressure Test...1210
    Torque Converter Stall Speed Test...1212
    Park Brake Pressure Test...1214
    Differential Lock Pressure Test...1218
Section 9025: Hydraulic System...1223
  Group 05: Theory of Operation...1223
    Hydraulic System Operation...1229
    Cooling Loop and Reversing Fan Circuit Operation...1231
    Service Brake Hydraulic Circuit Operation...1233
    Steering and Secondary Steering Hydraulic Circuit Operation...1235
    Dual Mode Steering Hydraulic Circuit Operation...1237
    Pilot Control Hydraulic Circuit Operation...1240
    Grapple Rotate Hydraulic Circuit Operation...1242
    Main Hydraulic Pump and Pressure Compensator Operation...1244
    Brake Accumulator Operation...1247
    Hydraulic Reservoir Operation...1248
    Hydraulic Oil Return Filter Operation...1250
    Hydraulic Fan Filter Operation...1252
    Brake Valve Operation...1253
    Priority Valve Operation...1255
    Steering Valve and System Operation...1259
    Secondary Steering Valve Operation...1261
    120 Series Cylinder Operation...1263
    Blade Valve Section Operation...1265
    Arch and Boom Valve Section Operation...1267
    System Relief Valve Operation...1268
    Circuit Relief Valve—Adjustable Operation...1270
    Circuit Relief Valve—Non-Adjustable Operation...1272
    Grapple Tong Valve Section Operation...1273
    Grapple Tong Flow Divider Operation...1275
    Pilot Controller Operation...1277
    Grapple Rotate Solenoid Valve Operation...1278
    Dual Mode Steering Solenoid Valve Operation...1280
    Rotary Manifold Operation...1282
    Fan Pump Operation...1283
    Fan Variable Speed and Reversing Control Valve Operation...1286
    Fan Motor Operation...1288
    Hydraulic Oil Cooler Operation...1289
    Cab Tilt Circuit Operation...1290
  Group 15: Diagnostic Information...1224
    Hydraulic System Overheating...1224
    Hydraulic Function Drifts Down...1224
    No Steering or Hydraulic Functions...1224
    Hydraulic Functions Slow...1224
    Individual Functions Slow (Cycle Time Slow)...1224
    No Hydraulic Functions (Steering Normal)...1224
    Low Hydraulic Power (Pressure)...1224
    Excessive Hydraulic Pump Noise...1224
    Function Powers Up or Down Without Moving Lever...1224
    Grapple Rotate Stalls...1224
    Grapple Rotates Too Fast...1224
    Grapple Rotates Slow...1224
    Tongs Do Not Close Evenly...1224
    Tongs Open or Close Slowly...1224
    Grapple Loses Logs During Skidding...1224
    Transmission Overfills With Oil...1224
    No Steering (Hydraulic Functions Normal)...1224
    Steering Valve Does Not Center...1224
    Steering Valve Locks Up...1224
    Frames Turn Wrong Direction...1224
    Steering Slow or Hard...1224
    Steering Erratic or Spongy...1224
    Machine Wanders...1224
    Quick Steer Mode Not Engaging...1224
    Quick Steer Mode Not Disengaging...1224
    Quick Steer Mode Engaging When Disengaged...1224
    Poor or No Brakes (Other Hydraulic Systems Normal)...1224
    Brakes Overly Aggressive...1224
    Brakes Drag...1224
    Brakes Chatter or Noisy...1224
    Delay in Braking...1225
    Fan Does Not Reach Full Speed (Both Directions)...1225
    Fan Does Not Reach Full Speed (Forward Direction Only)...1225
    Fan Does Not Reach Full Speed (Reverse Direction Only)...1225
    Fan Does Not Spin (Both Directions)...1225
    Fan Does Not Slow Down Before Reversing...1225
    High Fan Cooler Pressure or Pressure Spikes...1225
    High Return Pressure at Fan Reversing Control Valve Port T...1225
    High Flow From Fan Motor Case Drain...1225
    Fan Pump Is Cavitating...1225
    Hydraulic System Component Location...1369
    Hydraulic System Schematic...1373
  Group 20: Adjustments...1225
    Service Brake Pedal Adjustment...1377
    Service Brake Inspection and Adjustment...1378
    Service Brake Bleeding Procedure...1379
    Grapple Damper Adjustment...1383
  Group 25: Tests...1225
    D15032NU Vacuum Pump Installation...1388
    JT02156A Digital Pressure and Temperature Analyzer Kit Installation...1390
    JT07148 Digital Hydraulic Tester...1391
    Hydraulic Oil Warmup Procedure...1392
    Main Hydraulic Pump Standby Pressure Test...1393
    Main Hydraulic Pump Flow Test...1397
    Main Hydraulic Pump Leakage Test...1400
    Pressure Reducing Valve Pressure Test...1403
    Pilot Controller Pressure Test...1405
    Priority Valve and Relief Valve Pressure Test...1408
    Priority Valve Port LS Flow Test...1411
    Priority Valve and Relief Valve Leakage Test...1413
    System and Circuit Relief Valve Pressure Test...1415
    Hydraulic Component Leakage Test...1420
    Cylinder Leakage Test...1424
    Cylinder Drift Test...1426
    Dual Mode Steering Engagement Pressure Test...1428
    Grapple Rotate Motor Crossover Relief Valve Pressure Test...1431
    Grapple Rotate Solenoid Valve Neutral Leakage Test...1433
    Grapple Tong Flow Divider Relief Valve Test...1435
    Rotary Manifold Center Seal Leakage Test...1437
    Rotary Manifold Drain and Lower Seal Leakage Test...1439
    Service Brake Valve and Accumulator Pressure Test...1441
    Service Brake Valve Leakage Test...1444
    Steering Valve Neutral Leakage Test...1446
    Hydraulic Oil Filter Inspection Procedure...1448
    Cooling Fan Circuit Test...1449
    Fan Motor Case Drain Test...1454
    Secondary Steering Operation Test...1456
Section 9030: Winch...1457
  Group 05: Theory of Operation...1457
    John Deere 4000 and 6000 Winches...1459
  Group 15: Diagnostic Information...1457
    Winch Control Lever Effort Excessive...1457
    Winch Clutch Slips...1457
    Winch Free Spool Effort Excessive...1457
    Winch Brake Will Not Hold...1457
    Winch Will Not Free Spool...1457
    Transmission Oil Level Varies Excessively...1457
    Winch Makes Grinding Noise When Going from FREE SPOOL to BRAKE OFF...1457
    Winch Component Location...1475
    Winch Hydraulic Schematic...1476
  Group 20: Adjustments...1457
    Winch Control Cable Adjustment Check...1478
    Brake Off Adjustment—4000 Series Winch...1479
    Brake Off Adjustment—6000 Series Winch...1484
  Group 25: Tests...1457
    Winch System Pressure Test...1493
    Winch Leakage Test...1498
    Winch Drum Rolling Drag Test...1502
Section 9031: Heating and Air Conditioning...1504
  Group 05: Theory Of Operation...1504
    Air Conditioning System Cycle of Operation...1507
  Group 15: Diagnostic Information...1504
    Air Conditioning System Visual Checks...1513
    Blower Does Not Operate in Any Speed...1504
    Blower Does Not Operate in Low Speed...1504
    Blower Does Not Operate in Medium Speed...1504
    Blower Does Not Operate in High Speed...1504
    Blower Does Not Operate in Purge Speed...1504
    Air Conditioner Does Not Operate...1504
    Air Conditioner Does Not Cool Cab Interior...1504
    Air Conditioner Runs Constantly...1504
    Interior Windows Continuously Foggy...1504
    Heater Does Not Operate...1504
    Heater Does Not Warm Cab Interior...1504
    Heating and Air Conditioning System Component Location...1546
  Group 25: Tests...1504
    R134a Air Conditioning System Test...1551
    Air Conditioner Freeze Control Switch Test...1555
    Air Conditioning Compressor Clutch Test...1557
    Air Conditioning High/Low Pressure Switch Test...1558
    Air Conditioning Expansion Valve Test...1560
    Refrigerant Leak Test...1563

John Deere 848H Skidder (S.N. 630436— ) Diagnosis and Test Service Technical Manual (TM11798)