John Deere Motor Graders 870G, 870GP, 872G, 872GP Operation and Test Technical Manual (TM13067X19)
Diagnosis and Test manual with electrical wiring diagrams for John Deere Motor Graders Models 870G, 870GP, 872G, 872GP (T2/S2), with workshop information to maintain, diagnose, operate and and rebuild like professional mechanics.
John Deere Motor Graders Models 870G, 870GP, 872G and 872GP workshop Operation and Test manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on Operation and Test procedure information
* Numbered instructions guide you through every Operation and Test 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.
TM13067X19 - John Deere Motor Graders 870G, 870GP, 872G, 872GP Technical Manual - Operation and Test.PDF
TM13067X19 - John Deere Motor Graders 870G, 870GP, 872G, 872GP Technical Manual - Operation and Test.EPUB
Total Pages: 2,530 pages
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Language: English
870G (PIN: 1DW870G***C656729-678817; 1DW870G***D656729-678817)
870GP (PIN: 1DW870G***C656729-678817; 1DW870G***D656729-678817)
872G (PIN: 1DW872G***C656729-678817; 1DW872G***D656729-678817)
872GP (PIN: 1DW872G***C656729-678817; 1DW872G***D656729-678817)
MAIN SECTIONS
Foreword
Manual Identification-READ THIS FIRST!
General Information
Safety
Torque Values
Wheels
Powered Wheels and Fasteners
Axles and Suspension Systems
Input Drive Shafts and U-Joints
Non-Powered Wheel Axles
Powered Wheel Axles
Axle Shafts, Bearings, and Reduction Gears
Hydraulic System
Transmission
Removal and Installation
Hydraulic System
Engine
Removal and Installation
Engine Auxiliary System
Cooling System
External Fuel Supply Systems
Torsional Isolator
Elements
Steering System
Power Steering
Hydraulic System
Service Brakes
Active Elements
Hydraulic System
Park Brake
Active Elements
Frame, Chassis or Supporting Structure
Frame Installation
Operator’s Station
Removal and Installation
Operator Enclosure
Pedal Assembly
Steering Tilt Console
Seat and Seat Belt
Heating and Air Conditioning
Sheet Metal and Styling
Engine Enclosure
Grille and Grille Housing
Main Hydraulic System
Hydraulic System
Grading Device
Controls Linkage
Frames
Circle Gearbox
Hydraulic System
Ground Conditioning Tool
Frames
Dealer Fabricated Tools
TABLE OF CONTENTS....1
Section 9000: General Information....37
Group 01: Safety....37
Recognize Safety Information....40
Follow Safety Instructions....41
Operate Only If Qualified....42
Wear Protective Equipment....43
Avoid Unauthorized Machine Modifications....44
Inspect Machine....45
Stay Clear of Moving Parts....46
Avoid High-Pressure Fluids....47
Avoid High-Pressure Oils....48
Work In Ventilated Area....49
Avoid Static Electricity Risk When Refueling....50
Prevent Fires....52
Prevent Battery Explosions....53
Handle Chemical Products Safely....54
Decommissioning — Proper Recycling and Disposal of Fluids and Components....55
Prepare for Emergencies....56
Clean Debris from Machine....57
Use Steps and Handholds Correctly....58
Start Only From Operator's Seat....59
Use and Maintain Seat Belt....60
Prevent Unintended Machine Movement....61
Avoid Work Site Hazards....62
Keep Riders Off Machine....64
Avoid Backover Accidents....65
Avoid Machine Tip-Over....66
Operating or Traveling On Public Roads....67
Inspect and Maintain ROPS....68
Add and Operate Attachments Safely....69
Park and Prepare for Service Safely....70
Service Cooling System Safely....71
Remove Paint Before Welding or Heating....72
Make Welding Repairs Safely....73
Drive Metal Pins Safely....74
Service Tires Safely....75
Section 9001: Diagnostics....76
Group 10: PCU Diagnostic Trouble Codes....76
000177.00 - Transmission Oil Temperature High....76
000177.04 - Transmission Oil Temperature Short To Ground....76
000525.02 - Program Variable REQ_GEAR Has Taken On An Invalid Value....76
000525.12 - Request For An Undefined Shift Being Made....76
000723.02 - Transmission Input Speed Sensor Bad Data....76
002000.02 - ECU CAN Data Invalid....76
002000.09 - Can Communication Lost For ECU....76
002033.02 - FLC CAN Data Invalid....76
002033.09 - CAN Communication Lost For FLC....76
002225.09 - CAN Communication Lost For Six Wheel Drive....76
522252.00 - Clutch 1 Hold Pressure Too High....76
522252.01 - Clutch 1 Hold Pressure Too Low....76
522253.00 - Clutch 2 Hold Pressure Too High....76
522253.01 - Clutch 2 Hold Pressure Too Low....76
522254.00 - Clutch 3 Hold Pressure Too High....76
522254.01 - Clutch 3 Hold Pressure Too Low....76
522255.00 - Clutch 4 Hold Pressure Too High....76
522255.01 - Clutch 4 Hold Pressure Too Low....76
522256.00 - Clutch A Hold Pressure Too High....76
522256.01 - Clutch A Hold Pressure Too Low....76
522257.00 - Clutch B Hold Pressure Too High....76
522257.01 - Clutch B Hold Pressure Too Low....76
522258.00 - Clutch C Hold Pressure Too High....76
522258.01 - Clutch C Hold Pressure Too Low....76
522259.00 - Clutch D Hold Pressure Too High....76
522259.01 - Clutch D Hold Pressure Too Low....76
522397.04 - Not In Forward Or Reverse While In Gear....76
522398.12 - Park And Not Park Both Active....76
522405.05 - Park Brake Pressure Low At Power-up....76
522413.12 - Gear Bits Active In Park....76
522414.03 - Transmission Clutch D Short To Power....76
522414.05 - Transmission Clutch D Open/Short To Ground....77
522507.14 - Inching Pedal During Trans Calibration....77
522517.31 - Engine Stall Prevention Active....77
523655.03 - Forward And Reverse Both Active....77
523699.31 - Transmission Speed Clutch Slipping....77
523700.00 - Clutch Protection Excessive Inching....77
523700.16 - Clutch Protection Excessive Inching....77
523700.31 - Transmission Direction Clutch Slipping....77
523708.02 - Inching Switch Signal Bad....77
523712.31 - Transmission CAL Without Park Brake Set....77
523717.31 - Helper Clutch Pressure High....77
523718.31 - Clutch Drum Speed Decel Excessive....77
523720.00 - Clutch D Fill Time Too Long....77
523720.01 - Clutch D Fill Time Too Short....77
523721.00 - Clutch C Fill Time Too Long....77
523721.01 - Clutch C Fill Time Too Short....77
523722.00 - Clutch B Fill Time Too Long....77
523722.01 - Clutch B Fill Time Too Short....77
523723.00 - Clutch A Fill Time Too Long....77
523723.01 - Clutch A Fill Time Too Short....77
523724.00 - Clutch 4 Fill Time Too Long....77
523724.01 - Clutch 4 Fill Time Too Short....77
523725.00 - Clutch 3 Fill Time Too Long....77
523725.01 - Clutch 3 Fill Time Too Short....77
523726.00 - Clutch 2 Fill Time Too Long....77
523726.01 - Clutch 2 Fill Time Too Short....77
523727.00 - Clutch 1 Fill Time Too Long....77
523727.01 - Clutch 1 Fill Time Too Short....77
523728.31 - Transmission Reverse Cylinder Speed Incorrect At Calibration....77
523729.31 - Transmission Forward Cylinder Speed Incorrect At Calibration....77
523730.31 - No Transmission Cylinder Speed During Calibration....77
523731.31 - Transmission Output Speed Detected At Calibration....77
523732.31 - Engine Speed Too Low To Calibrate The Transmission....77
523733.31 - Engine Speed Too High To Calibrate The Transmission....78
523734.31 - Transmission Too Cold To Calibrate....78
523735.04 - Valve Driver Supply Voltage Low....78
523736.14 - Bad Gear Position Switch State....78
523738.02 - Shifter Handle Problem....78
523738.31 - Shifter Handle Problem....78
523739.31 - Not Park And Forward/Reverse Mismatch....78
523740.31 - Forward/Reverse Switch And Gear Mismatch....78
523741.31 - Started In Gear....78
523742.31 - Shifter Vsense Low....78
523747.14 - Park and Not Park Both Passive....78
523750.04 - Not Park Passive In Gear Or Neutral....78
523754.03 - Not Park Active At Startup....78
523755.05 - Park Start Input Passive At Power Up....78
523761.03 - Transmission Clutch 4 Short To Power....78
523761.05 - Transmission Clutch 4 Open/Short To Ground....78
523762.03 - Transmission Clutch 3 Short To Power....78
523762.05 - Transmission Clutch 3 Open/Short To Ground....78
523763.03 - Transmission Clutch 2 Short To Power....78
523763.05 - Transmission Clutch 2 Open/Short To Ground....78
523764.03 - Transmission Clutch 1 Short To Power....78
523764.05 - Transmission Clutch 1 Open/Short To Ground....78
524029.00 - Inching Pedal Out Of Range High....78
524029.01 - Inching Pedal Out Of Range Low....78
524029.12 - Inching Pedal Minimum Voltage Exceeds Maximum Voltage....78
524194.07 - Direction Sensor Mismatch....78
524271.03 - Transmission Clutch C Short To Power....78
524271.05 - Transmission Clutch C Open/Short To Ground....78
524272.03 - Transmission Clutch B Short To Power....78
524272.05 - Transmission Clutch B Open/Short To Ground....78
524273.03 - Transmission Clutch A Short To Power....78
524273.05 - Transmission Clutch A Open/Short To Ground....78
524275.31 - Forward/Reverse Without Valid Gear....78
Group 20: ECU Diagnostic Trouble Codes....79
000029.03 - Decel Pedal Short to Power....79
000091.03 - Accel Pedal Short to Power....79
000091.04 - Accel Pedal Open or Short....79
000107.00 - Engine Air Filter Restricted....79
000596.31 - Engine Speed Control Enable Switch Fault....79
000600.31 - Engine Speed Accel/ Decel Switch Fault....79
001196.31 - ECU Anti Theft Locked....79
001321.05 - Starter Relay Open Circuit....79
001321.06 - Starter Relay High Current....79
001321.30 - Starter Engaged for 30 Seconds....79
001321.31 - Starter Solenoid Open Circuit....79
002003.09 - CAN Communication Lost For TCU....79
002033.09 - CAN Communication Lost For FLC....79
Group 30: ADU Diagnostic Trouble Codes....79
000158.03 - Switched Power Voltage High....79
000158.04 - Switched Power Voltage Low....79
000168.03 - Battery Voltage High....79
000168.04 - Battery Voltage Low....79
000442.00 - Display Temperature High....79
000442.01 - Display Temperature Low....79
001491.11 - LCD Backlight Failure....79
002033.09 - CAN Communication Lost For FLC....79
003597.02 - 5.0 Volt Power Supply Invalid....79
003598.02 - 1.5 Volt Power Supply Invalid....79
003599.02 - 3.3 Volt Power Supply Invalid....79
523436.14 - ADU Watchdog Time Out....79
523438.31 - Memory Error....79
523651.02 - Memory Stack Overflow....79
523773.03 - CAN High Voltage High....79
523773.04 - CAN High Voltage Low....79
523774.03 - CAN Low Voltage High....79
523774.04 - CAN Low Voltage Low....79
524076.10 - Information Button Stuck....80
524077.10 - Back Key Button Stuck....80
524078.10 - Menu Select Button Stuck....80
524080.10 - Down Arrow Button Stuck....80
524082.10 - Up Arrow Button Stuck....80
Group 40: FLC Diagnostic Trouble Codes....80
000096.03 - Fuel Level Sender Open or Short....80
000096.04 - Fuel Level Sender Short To Ground....80
000117.01 - Service Brake Pressure Low....80
000117.04 - Service Brake Accumulator Switch Short to Ground....80
000167.03 - System Voltage Above Normal....80
000167.04 - System Voltage Below Normal....80
000168.03 - High Battery Voltage....80
000168.04 - Low Battery Voltage....80
000746.05 - Differential Lock Solenoid Open or Short....80
000746.06 - Differential Lock Solenoid High Current....80
000880.05 - Brake Lights Open or Short....80
000880.06 - Brake Lights High Current....80
000977.05 - Reverse Fan Solenoid Open or Short....80
000977.06 - Reverse Fan Solenoid Short to Ground....80
001045.04 - Brake Light Switch Short to Ground....80
001071.03 - Fan Speed Solenoid Open or Short....80
001071.04 - Fan Speed Solenoid High Current....80
001196.02 - ECU Toggle Lock Status Failed....80
001550.05 - AC Clutch Open Circuit....80
001550.06 - AC Clutch Short to Ground....80
001638.00 - Hydraulic Oil High Temperature....80
001638.03 - Hydraulic Oil Temperature Sensor Open or Short....80
001638.04 - Hydraulic Oil Temperature Sensor Short to Ground....80
001713.01 - Hydraulic Oil Filter Restricted....80
001713.03 - Hydraulic Oil Filter Switch Short to Power....80
001762.01 - Hydraulic Pressure Low....80
001762.03 - Hydraulic Pressure Short to Power....80
001762.04 - Hydraulic Pressure Short to Ground....81
002000.09 - CAN Communication Lost For ECU....81
002003.09 - CAN Communication Lost For TCU....81
002034.09 - CAN Communication Lost For AVC....81
002040.09 - CAN Communication Lost For ADU....81
002141.09 - CAN Communication Lost For SSM....81
002160.09 - CAN Communication Lost For RJ1....81
002161.09 - CAN Communication Lost For RJ2....81
002162.09 - CAN Communication Lost For RJ3....81
002163.09 - CAN Communication Lost For RJ4....81
002165.09 - CAN Communication Lost For LJ1....81
002166.09 - CAN Communication Lost For LJ2....81
002167.09 - CAN Communication Lost For LJ3....81
002168.09 - CAN Communication Lost For LJ4....81
002213.09 - CAN Communication Lost For HVC....81
002225.09 - CAN Communication Lost For 6WD....81
002251.09 - CAN Comm Lost For JDL....81
002348.05 - High Beam Lamps Open Circuit....81
002348.06 - High Beam Lamps High Current....81
002350.05 - Low Beam Lamps Open Circuit....81
002350.06 - Low Beam Lamps High Current....81
002352.05 - Cab Front Work Lights Open Circuit....81
002352.06 - Cab Front Work Lights High Current....81
002353.05 - Front Work Lights Open Circuit....81
002353.06 - Front Work Lights High Current....81
002356.05 - Front Cab Corner Lights Open Circuit....81
002356.06 - Front Cab Corner Lights High Current....81
002360.05 - Rear Work Lights Open Circuit....81
002360.06 - Rear Work Lights High Current....81
002362.05 - Rear Cab Corner Lights Open Circuit....81
002362.06 - Rear Cab Corner Lights High Current....81
002366.05 - Side Work Lights Open Circuit....81
002366.06 - Side Work Lights High Current....81
002368.05 - Left Turn Lights Open Circuit....82
002368.06 - Left Turn Lights High Current....82
002370.05 - Right Turn Lights Open Circuit....82
002370.06 - Right Turn Lights High Current....82
002378.05 - Marker/Tail Lights Open Circuit....82
002378.06 - Marker/Tail Lights High Current....82
002386.06 - Rotary Beacon Short to Ground....82
002874.04 - High Beam Switch Short to Ground....82
002876.04 - Turn Signal Switch Short to Ground....82
003318.03 - Blade Pitch Sensor Short to Power....82
003318.04 - Blade Pitch Sensor Short to Ground....82
003319.03 - Slope Sensor Short to Power....82
003319.04 - Slope Sensor Short to Ground....82
003331.03 - Circle Rotate Sensor Short to Power....82
003331.04 - Circle Rotate Sensor Short to Ground....82
3509.03 - Sensor Supply 1 Short to Power....82
3509.04 - Sensor Supply 1 Short to Ground....82
003510.03 - Sensor Supply 2 Short to Power....82
003510.04 - Sensor Supply 2 Short to Ground....82
003511.03 - Sensor Supply 3 Short to Power....82
003511.04 - Sensor Supply 3 Short to Ground....82
517064.01 - Hydrostatic Oil Filter Restricted....82
517064.03 - Hydrostatic Oil Filter Restriction Switch Circuit Fault....82
520450.03 - Saddle Lock Pin Switch Short to Power....82
521650.00 - Fan Pressure Extremely High....82
521650.03 - Hydraulic Fan Pressure Sensor Short to Power....82
521650.04 - Hydraulic Fan Pressure Sensor Short to Ground....82
521900.03 - Articulation Angle Sensor Short to Power....82
521900.04 - Articulation Angle Sensor Short to Ground....82
522340.05 - Saddle Lock Solenoid Open Circuit....82
522340.06 - Saddle Lock Solenoid High Current....82
522341.05 - Heated Mirror Open Circuit....82
522341.06 - Heated Mirror High Current....82
522343.06 - Rear Window Defrost Relay High Current....83
522375.01 - Transmission Oil Filter Restricted....83
522375.03 - Transmission Oil Filter Switch Short to Power....83
522415.05 - Front Lower Washer Pump Open Circuit....83
522415.06 - Front Lower Washer Pump High Current....83
522416.05 - Front Lower Wiper High Speed Open Circuit....83
522416.06 - Front Lower Wiper High Speed High Current....83
522417.05 - Front Lower Wiper Park Open Circuit....83
522418.05 - Front Lower Wiper Low Speed Open Circuit....83
522418.06 - Front Lower Wiper Low Speed High Current....83
522426.05 - Rear Wiper Park Open Circuit....83
522427.05 - Front Wiper Park Open Circuit....83
522433.05 - Rear Wiper Low Speed Open Circuit....83
522433.06 - Rear Wiper Low Speed High Current....83
522434.05 - Front Wiper Low Speed Open Circuit....83
522434.06 - Front Wiper Low Speed High Current....83
522435.05 - Front Wiper High Speed Open Circuit....83
522435.06 - Front Wiper High Speed High Current....83
522796.05 - Rear Washer Pump Open Circuit....83
522796.06 - Rear Washer Pump High Current....83
522797.05 - Front Washer Pump Open Circuit....83
522797.06 - Front Washer Pump High Current....83
523440.04 - Unswitched Power Voltage Low....83
523688.03 - Steering Angle Sensor Short to Power....83
523688.04 - Steering Angle Sensor Short to Ground....83
523689.04 - Differential Lock Switch Short to Ground....83
523901.01 - Front Lower Window Switch Short to Ground....83
524044.01 - Axle Oil Filter Restricted....83
524044.03 - Axle Oil Filter Switch Short to Power....83
Group 50: HVC Diagnostic Trouble Codes....83
000583.03 - Mainfall Sensor Short to Power....83
000583.04 - Mainfall Sensor Short to Ground....83
001503.04 - Left Armrest Up Switch Short to Ground....83
001503.13 - Left Armrest Position Undetermined....84
001565.04 - Left Armrest Down Switch Short to Ground....84
001566.04 - Right Armrest Down Switch Short to Ground....84
001899.03 - Circle Side Shift A Short to Power....84
001899.04 - Circle Side Shift A Open or Short to Ground....84
001900.03 - Circle Side Shift B Short to Power....84
001900.04 - Circle Side Shift B Open or Short to Ground....84
001911.03 - Wheel Lean A Short to Power....84
001911.04 - Wheel Lean A Open or Short to Ground....84
001912.03 - Wheel Lean B Short to Power....84
001912.04 - Wheel Lean B Open or Short to Ground....84
001923.03 - Right Blade Lift A Short to Power....84
001923.04 - Right Blade Lift A Open or Short to Ground....84
001924.03 - Right Blade Lift B Short to Power....84
001924.04 - Right Blade Lift B Open or Short to Ground....84
001935.03 - Articulation A Short to Power....84
001935.04 - Articulation A Open or Short to Ground....84
001936.03 - Articulation B Short to Power....84
001936.04 - Articulation B Open or Short to Ground....84
001947.03 - Circle Rotate A Short to Power....84
001947.04 - Circle Rotate A Open or Short to Ground....84
001948.03 - Circle Rotate B Short to Power....84
001948.04 - Circle Rotate B Open or Short to Ground....84
001959.03 - Blade Side Shift A Short to Power....84
001959.04 - Blade Side Shift A Open or Short to Ground....84
001960.03 - Blade Side Shift B Short to Power....84
001960.04 - Blade Side Shift B Open or Short to Ground....84
001971.03 - Left Blade Lift A Short to Power....84
001971.04 - Left Blade Lift A Open or Short to Ground....84
001972.03 - Left Blade Lift B Short to Power....84
001972.04 - Left Blade Lift B Open or Short to Ground....84
001983.03 - Steering Left A Short to Power....84
001983.04 - Steering Left A Open or Short to Ground....84
001984.03 - Steering Left B Short to Power....85
001984.04 - Steering Left B Open or Short to Ground....85
002000.09 - CAN Communication Lost For ECU....85
002003.09 - CAN Communication Lost For TCU....85
002033.09 - CAN Communication Lost For FLC....85
002034.09 - CAN Communication Lost For AVC....85
002160.09 - CAN Communication Lost For RJ1....85
002161.09 - CAN Communication Lost For RJ2....85
002162.09 - CAN Communication Lost For RJ3....85
002163.09 - CAN Communication Lost For RJ4....85
002165.09 - CAN Communication Lost For LJ1....85
002166.09 - CAN Communication Lost For LJ2....85
002167.09 - CAN Communication Lost For LJ3....85
002168.09 - CAN Communication Lost For LJ4....85
520752.04 - Return to Straight Switch 1 Short to Ground....85
520753.04 - Return to Straight Switch 2 Short to Ground....85
520754.04 - Return to Straight Switch 3 Short to Ground....85
520755.04 - Return to Straight Switch 4 Short to Ground....85
521485.04 - Right Armrest Up Switch Short to Ground....85
521485.13 - Right Armrest Position Undetermined....85
523849.13 - Return to Straight Switch Mismatch....85
Group 60: AVC Diagnostic Trouble Codes....85
001995.03 - Blade Pitch A Short to Power....85
001995.04 - Blade Pitch A Open or Short to Ground....85
001996.03 - Blade Pitch B Short to Power....85
001996.04 - Blade Pitch B Open or Short to Ground....85
002000.09 - CAN Communication Lost For ECU....85
002003.09 - CAN Communication Lost For TCU....85
002033.09 - CAN Communication Lost For FLC....85
002160.09 - CAN Communication Lost For RJ1....85
002161.09 - CAN Communication Lost For RJ2....85
002162.09 - CAN Communication Lost For RJ3....85
002163.09 - CAN Communication Lost For RJ4....85
002165.09 - CAN Communication Lost For LJ1....86
002166.09 - CAN Communication Lost For LJ2....86
002167.09 - CAN Communication Lost For LJ3....86
002168.09 - CAN Communication Lost For LJ4....86
002213.09 - CAN Communication Lost For HVC....86
002263.03 - Ripper/Under Cab Auxiliary 1 A Short to Power....86
002263.04 - Ripper/Under Cab Auxiliary 1 A Open or Short to Ground....86
002264.03 - Ripper/Under Cab Auxiliary 1 B Short to Power....86
002264.04 - Ripper/Under Cab Auxiliary 1 B Open or Short to Ground....86
002275.03 - Under Cab Auxiliary 2 A Short to Power....86
002275.03 - Under Cab Auxiliary 2 A Short to Power....86
002275.04 - Under Cab Auxiliary 2 A Open or Short to Ground....86
002276.03 - Under Cab Auxiliary 2 B Short to Power....86
002276.04 - Under Cab Auxiliary 2 B Open or Short to Ground....86
002287.03 - Under Cab Auxiliary 3 A Short to Power....86
002287.04 - Under Cab Auxiliary 3 A Open or Short to Ground....86
002288.03 - Under Cab Auxiliary 3 B Short to Power....86
002288.04 - Under Cab Auxiliary 3 B Open or Short to Ground....86
002299.03 - Draft Frame Auxiliary 1 A Short to Power....86
002299.04 - Draft Frame Auxiliary 1 A Open or Short to Ground....86
002300.03 - Draft Frame Auxiliary 1 B Short to Power....86
002300.04 - Draft Frame Auxiliary 1 B Open or Short to Ground....86
002311.03 - Draft Frame Auxiliary 2 A Short to Power....86
002311.04 - Draft Frame Auxiliary 2 A Open or Short to Ground....86
002312.03 - Draft Frame Auxiliary 2 B Short to Power....86
002312.04 - Draft Frame Auxiliary 2 B Open or Short to Ground....86
002323.03 - Draft Frame Auxiliary 3 A Short to Power....86
002323.04 - Draft Frame Auxiliary 3 A Open or Short to Ground....86
002324.03 - Draft Frame Auxiliary 3 B Short to Power....86
002324.04 - Draft Frame Auxiliary 3 B Open or Short to Ground....86
004528.03 - Right Auxiliary X Axis 2 Short to Power....86
004528.04 - Right Auxiliary X Axis 2 Short to Ground....86
004531.03 - Right Auxiliary X Axis Short to Power....86
004531.04 - Right Auxiliary X Axis Short to Ground....87
004531.13 - Right Auxiliary X Axis Redundance Mismatch....87
004532.03 - Right Auxiliary Y Axis 2 Short to Power....87
004532.04 - Right Auxiliary Y Axis 2 Short to Ground....87
004535.03 - Right Auxiliary Y Axis Short to Power....87
004535.04 - Right Auxiliary Y Axis Short to Ground....87
004535.13 - Right Auxiliary Y Axis Redundance Mismatch....87
004539.03 - Right Auxiliary 2 Switch Short to Power (Stuck On)....87
004539.04 - Right Auxiliary 2 Switch Short to Ground....87
004540.03 - Right Blade Lift Float Switch Short to Power (Stuck On)....87
004540.04 - Right Blade Lift Float Switch Short to Ground....87
004541.03 - Right Auxiliary 1 Switch Short to Power (Stuck On)....87
004541.04 - Right Auxiliary 1 Switch Short to Ground....87
004713.03 - Left Auxiliary X Axis Short to Power 2....87
004713.04 - Left Auxiliary X Axis Short to Ground 2....87
004716.03 - Left Auxiliary X Axis Short to Power....87
004716.04 - Left Auxiliary X Axis Short to Ground....87
004716.13 - Left Auxiliary X Axis Redundance Mismatch....87
004717.03 - Left Auxiliary Y Axis 2 Short to Power....87
004717.04 - Left Auxiliary Y Axis 2 Short to Ground....87
004720.03 - Left Auxiliary Y Axis Short to Power....87
004720.04 - Left Auxiliary Y Axis Short to Ground....87
004720.13 - Left Auxiliary Y Axis Redundance Mismatch....87
004724.03 - Left Auxiliary 2 Switch Short to Power (Stuck On)....87
004724.04 - Left Auxiliary 2 Switch Short to Ground....87
004725.03 - Left Blade Lift Float Switch Short to Power (Stuck On)....87
004725.04 - Left Blade Lift Float Switch Short to Ground....87
004726.03 - Left Auxiliary 1 Switch Short to Power (Stuck On)....87
004726.04 - Left Auxiliary 1 Switch Short to Ground....87
516292.05 - Under Cab End Plate Warm-Up Open Circuit....87
516292.06 - Under Cab End Plate Warm-Up High Current....87
516300.05 - Draft Frame End Plate Warm-Up Open Circuit....87
516300.06 - Draft Frame End Plate Warm-Up High Current....87
Group 70: OC3 Diagnostic Trouble Codes....88
000629.12 - SSM Watchdog Time Out....88
002033.09 - CAN Communication Lost For FLC....88
002634.04 - Ignition Relay Output Short to Ground....88
002634.05 - Ignition Relay Output Open....88
520752.04 - Heated Mirror Button Stuck....88
520752.09 - Heated Mirror Button Missing CAN Status Message....88
520753.04 - Rear Defrost Button Stuck....88
520753.09 - Rear Defrost Button Missing CAN Message....88
520754.04 - Lower Washer Button Stuck....88
520754.09 - Lower Washer Button Missing CAN Status Message....88
520755.04 - Lower Wiper Button Stuck....88
520755.09 - Lower Wiper Button Missing CAN Status Message....88
523335.04 - Rear Wiper Button Stuck....88
523335.09 - Rear Wiper Button Missing CAN Status Message....88
523336.04 - Rear Washer Button Stuck....88
523336.09 - Rear Washer Button Missing CAN Status Message....88
523338.04 - Auto Blade Button Stuck....88
523338.09 - Auto Blade Button Missing CAN Status Message....88
523339.04 - Auto Differential Lock Button Stuck....88
523339.09 - Auto Differential Lock Button Missing CAN Status Message....88
523340.04 - Auto Shift Button Stuck....88
523340.09 - Auto Shift Button Missing CAN Status Message....88
523849.04 - Air Conditioning/Defrost Button Stuck....88
523849.09 - Air Conditioning/Defrost Button Missing CAN Status Message....88
523850.04 - Front Wiper Button Stuck....88
523850.09 - Front Wiper Button Missing CAN Status Message....88
523852.04 - Front Washer Button Stuck....88
523852.09 - Front Washer Button Missing CAN Status Message....88
523854.04 - Right Cab Work Lights Button Stuck....88
523854.09 - Right Cab Work Lights Button Missing CAN Status Message....88
523855.04 - Cab Corner Work Lights Button Stuck....88
523855.09 - Cab Corner Work Lights Button Missing CAN Status Message....88
523856.04 - Spare Button Stuck....89
523856.09 - Spare Button Missing CAN Status Message....89
523857.04 - Drive Marker Light Button Stuck....89
523857.09 - Drive Marker Light Button Missing CAN Status Message....89
523858.04 - Frame Work Light Button Stuck....89
523858.09 - Frame Work Light Button Missing CAN Status Message....89
523860.04 - Cab Front Work Lights Button Stuck....89
523860.09 - Cab Front Work Lights Button Missing CAN Status Message....89
523861.04 - Lever Steering Button Stuck....89
523861.09 - Lost Lever Steering LED Message....89
523862.04 - Saddle Lock Pin Button Stuck....89
523862.09 - Saddle Lock Pin Button Missing CAN Status Message....89
523863.04 - Hydraulic Enable Button Stuck....89
523863.09 - Hydraulic Enable Button Missing CAN Status Message....89
523864.04 - Hazard Button Stuck....89
523864.09 - Hazard Button Missing CAN Status Message....89
523865.04 - Beacon Light Button Stuck....89
523865.09 - Beacon Light Button Missing CAN Status Message....89
523867.04 - Stop Button Stuck....89
523867.09 - Stop Button Missing CAN Status Message....89
523868.04 - Start Button Stuck....89
523868.09 - Start Button Missing CAN Status Message....89
Group 80: HWD Diagnostic Trouble Codes....89
000598.04 - Bottom of Inching Pedal Short To Ground....89
000611.02 - Left Pump Neutral Out of Adjustment....89
000611.06 - No Left Motor Speed During Calibration....89
000611.07 - No Left Motor Speed During Warm Up....89
000611.11 - Unable to Calibrate Left Forward Gears 1—4....89
000612.02 - Right Pump Neutral Out of Adjustment....89
000612.06 - No Right Motor Speed During Calibration....89
000612.07 - No Right Motor Speed During Warm Up....89
000612.11 - Unable to Calibrate Right Forward Gears 1—4....89
000613.11 - Unable to Calibrate Left Reverse Gears 1—4....89
000614.07 - Left High/Low Solenoid Off During Calibration....90
000614.11 - Unable to Calibrate Right Reverse Gears 1—4....90
000615.07 - Right High/Low Solenoid Off During Calibration....90
001592.00 - Six Wheel Drive Left Motor Overspeed....90
001593.00 - Six Wheel Drive Right Motor Overspeed....90
2000.09 - CAN Communication Lost For ECU....90
002003.09 - CAN Communication Lost From Transmission Control Unit (TCU)....90
002033.09 - CAN Communication Lost For FLC....90
002538.31 - Transmission Control Unit (TCU) Not Allowing Precision Mode....90
002612.04 - Six Wheel Drive On/Off Switch Short To Ground....90
522447.04 - Right Forward Brake Solenoid Short To Ground....90
522447.05 - Right Forward Brake Solenoid Open Circuit....90
522448.04 - Right Reverse Brake Solenoid Short To Ground....90
522448.05 - Right Reverse Brake Solenoid Open Circuit....90
522449.04 - Left Reverse Brake Solenoid Short To Ground....90
522449.05 - Left Reverse Brake Solenoid Open Circuit....90
522450.04 - Left Forward Brake Solenoid Short To Ground....90
522450.05 - Left Forward Brake Solenoid Open Circuit....90
522507.03 - Calibration Power After Power-Up....90
522507.04 - Six Wheel Drive Calibration Input Short To Ground....90
523216.05 - No Voltage To Valve Power 4....90
523217.05 - No Voltage To Valve Power 5....90
523218.05 - No Voltage To Valve Power 2....90
523219.05 - No Voltage To Valve Power 1....90
523678.03 - Right Drive Pump Reverse Solenoid Short To Power....90
523678.05 - Right Drive Pump Reverse Solenoid Open Circuit....90
523679.03 - Left Drive Pump Reverse Solenoid Short To Power....90
523679.05 - Left Drive Pump Reverse Solenoid Open Circuit....90
523680.03 - Left Drive Pump Forward Solenoid Short To Power....90
523680.05 - Left Drive Pump Forward Solenoid Open Circuit....90
Section 9005: Operational Checkout Procedure....1433
Group 10: Operational Checkout Procedure....1433
Operational Checkout....1470
Section 9010: Engine....1506
Group 05: Theory of Operation....1506
Engine Identification....1511
John Deere Engine Theory of Operation....1515
Cold Weather Start Aid....1516
Soft Start....1520
Engine Speed....1521
Group 15: Diagnostic Information....1506
John Deere Engine Diagnostic Information....1523
Engine Sampling Port Location....1524
Engine Cooling System Component Location....1525
Engine Fuel System Component Location....1528
Engine Intake and Exhaust Component Location....1530
Group 25: Tests....1506
John Deere Engine....1534
Fluid Sampling Procedure....1535
Intake Manifold Pressure Test—Turbocharger Boost—Engine 6090HDW04....1540
Engine Slow and Fast Idle Speed Check....1542
Radiator Temperature Differential Test....1543
Turbocharger Wastegate Actuator Test—Engine 6090HDW04....1545
Section 9015: Electrical System....1547
Group 05: System Information....1547
Electrical Diagram Information....1556
Electrical Schematic Symbols....1560
Group 10: System Diagrams....1547
Fuse and Relay Specifications....1565
System Functional Schematic, Wiring Diagram and Component Location Master Legend....1567
System Functional Schematic....1579
Power and Ground Cables Component Location....1592
Power and Ground Cables Wiring Diagram....1594
Front 6WD Harness (W10) Component Location....1598
Front 6WD Harness (W10) Wiring Diagram....1600
Rear 6WD Harness (W11) Component Location....1602
Rear 6WD Harness (W11) Wiring Diagram (S.N. —667937)....1603
Rear 6WD Harness (W11) Wiring Diagram (S.N. 667938— )....1605
Heater and Air Conditioner Harness (W12) Component Location....1607
Heater and Air Conditioner Harness (W12) Wiring Diagram....1609
Radio Harness (W13) Component Location....1611
Radio Harness (W13) Wiring Diagram....1613
Cab Roof Harness (W14) Component Location....1615
Cab Roof Harness (W14) Wiring Diagram....1617
Cab Interior Harness (W15) Component Location—6WD....1619
Cab Interior Harness (W15) Wiring Diagram—6WD....1621
Cab Interior Harness (W16) Component Location—Non 6WD....1633
Cab Interior Harness (W16) Wiring Diagram—Non 6WD....1635
Front Motor Speed Sensor Harnesses (W17 and W18) Component Location—6WD....1646
Front Motor Speed Sensor Harnesses (W17 and W18) Wiring Diagram—6WD....1648
Blade Impact Harness (W19) Component Location—If Equipped....1650
Blade Impact Harness (W19) Wiring Diagram—If Equipped....1651
Turn-Tail-Stop Light Harness (W20) Component Location....1652
Turn-Tail-Stop Light Harness (W20) Wiring Diagram....1653
Drive and Turn Lights Harnesses (W22 and W23) Component Location....1654
Drive and Turn Lights Harnesses (W22 and W23) Wiring Diagram....1655
Steering Angle Sensor Harness (W24) Component Location—6WD....1659
Steering Angle Sensor Harness (W24) Wiring Diagram—6WD....1660
Front Platform Harness (W25) Component Location....1662
Front Platform Harness (W25) Wiring Diagram....1665
Rear Platform Harness (W26) Component Location....1667
Rear Platform Harness (W26) Wiring Diagram....1673
Rear Camera Harness (W27) Component Location—If Equipped....1676
Rear Camera Harness (W27) Wiring Diagram....1677
Fan Door Harness (W31) Component Location....1680
Fan Door Harness (W31) Wiring Diagram....1681
Engine Work Light Harness (W33) Component Location....1682
Engine Work Light Harness (W33) Wiring Diagram....1683
Midstructure Harness (W34) Component Location....1685
Midstructure Harness (W34) Wiring Diagram....1687
Transmission Harness (W35) Component Location....1690
Transmission Harness (W35) Wiring Diagram....1692
Tilt Console Harness (W36) Component Location....1693
Tilt Console Harness (W36) Wiring Diagram....1695
Electrohydraulic (EH) Main Cab Harness (W38) Component Location....1698
Electrohydraulic (EH) Main Cab Harness (W38) Wiring Diagram....1700
Electrohydraulic (EH) Main Frame Harness (W39) Component Location....1702
Electrohydraulic (EH) Main Frame Harness (W39) Wiring Diagram....1704
Electrohydraulic (EH) Draft Frame Harness (W40) Component Location....1706
Electrohydraulic (EH) Draft Frame Harness (W40) Wiring Diagram....1707
Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Component Location....1708
Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Wiring Diagram....1710
Electrohydraulic (EH) Armrest Interlock Harnesses (W46 and W47) Component Location....1713
Electrohydraulic (EH) Armrest Interlock Harnesses (W46 and W47) Wiring Diagram....1714
Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Component Location....1716
Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Wiring Diagram....1717
Engine Interface Harness (W50) Component Location....1720
Engine Interface Harness (W50) Wiring Diagram....1722
Engine Harness (W55) Component Location—Engine 6090HDW01A....1723
Engine Harness (W55) Wiring Diagram—Engine 6090HDW01A....1725
Engine Harness (W56) Component Location—Engine 6090HDW04....1727
Engine Harness (W56) Wiring Diagram—Engine 6090HDW04....1729
License Plate Harness (W65) Component Location....1730
License Plate Harness (W65) Wiring Diagram....1731
Rear View Camera Display Harness (W67) Component Location....1732
Rear View Camera Display Harness (W67) Wiring Diagram....1733
JDLink™ Harnesses (W6002 and W6003) Component Location—If Equipped....1734
JDLink™ Modular Telematics Gateway (MTG) Harness (W6002) Wiring Diagram—If Equipped....1736
JDLink™ Satellite (SAT) Harness (W6003) Wiring Diagram—If Equipped....1737
Group 15: Sub-System Diagnostics....1549
Controller Area Network (CAN) Theory of Operation....1742
Start and Charge Circuits Theory of Operation....1746
Park Brake Circuit Theory of Operation....1752
Advanced Display Unit (ADU) and Sealed Switch Module (SSM) Circuits Theory of Operation....1755
Engine Control Unit (ECU) Circuit Theory of Operation....1759
Transmission Control Unit (TCU) Circuit Theory of Operation....1764
Hydraulic Valve Controller (HVC) Circuit Theory of Operation....1775
Auxiliary Valve Controller (AVC) Circuit Theory of Operation....1784
Six Wheel Drive (6WD) Controller Circuit Theory of Operation....1791
Flex Load Controller (FLC) Circuit Theory of Operation....1797
Hydraulic Fan Speed and Fan Reversing Circuits Theory of Operation....1806
Differential Lock Circuit Theory of Operation....1810
Saddle Lock Circuit Theory of Operation....1814
Drive Lights, Marker Lights, Hazards, and Turn Lights Circuits Theory of Operation....1816
Work Lights Circuit Theory of Operation....1820
Brake Lights and Brake Accumulator Pressure Warning Circuit Theory of Operation....1823
Backup Lights Circuit Theory of Operation—If Equipped....1825
Beacon Light Circuit Theory of Operation—If Equipped....1827
Wipers and Washers Circuits Theory of Operation....1829
Rear Window Defog and Heated Side Mirrors Circuits Theory of Operation....1834
Air Conditioner, Heater, and Precleaner Circuits Theory of Operation....1840
Air Conditioner, Heater, and Precleaner Circuits Theory of Operation....1840
JDLink™ Circuit Theory of Operation....1844
Group 16: Monitor Operation....1550
Advanced Display Unit (ADU)—Service Mode....1849
Advanced Display Unit (ADU)—Clear Codes....1851
Advanced Display Unit (ADU)—Show/Hide Main Menu....1852
Advanced Display Unit (ADU)—Enable Options....1854
Advanced Display Unit (ADU)—Tire Size....1855
Advanced Display Unit (ADU)—Fan Speed....1856
Advanced Display Unit (ADU)—Articulation Cal....1857
Advanced Display Unit (ADU)—Steering Cal....1858
Advanced Display Unit (ADU)—TCU Calibration....1859
Advanced Display Unit (ADU)—HWD Calibration....1860
Advanced Display Unit (ADU)—GP Auxiliary Valve Flows....1861
Advanced Display Unit (ADU)—GP Auxiliary Control Setup....1862
Group 20: References....1550
Flex Load Controller (FLC) Outputs....1866
Service ADVISOR™ Application....1869
Service ADVISOR™ Connection Procedure....1870
Reading Diagnostic Trouble Codes (DTC) With Service ADVISOR™ Application....1871
Intermittent Diagnostic Trouble Code (DTC) Diagnostics....1874
Cross Slope Diagnostics....1875
JDLink™ Connection Procedure—If Equipped....1884
Transmission Control Unit (TCU) Calibration....1885
6WD Controller Calibration (If Equipped)....1550
CAN Circuit Testing....1892
Electrical Component Specifications....1898
Alternator Test....1903
Transmission Control and Park Brake Lever Test....1905
Park/Neutral/Gear Position Switch Module and Forward/Reverse Switch Module Test....1907
Output Shaft Speed Sensor Test....1910
Inching Pedal Module Test....1911
Accelerator Pedal Sensor Test....1915
Hydraulic Pump Pressure Sensor Test....1917
Lower Windshield Wiper Proximity Switch Adjustment and Installation....1920
Electrical Component Checks....1922
Articulation Sensor Linkage Adjustment (Rear Steer)....1928
Electrohydraulic Valve Calibration Procedure....1930
Articulation Sensor Calibration Procedure....1933
Steering Angle Sensor Calibration Procedure....1934
Park/Neutral/Gear Position Switch Module and Forward/Reverse Switch Module Remove and Install....1935
Controller Remove and Install....1940
Steering Angle Sensor Remove and Install....1941
Connector Terminal Test....1945
Replace Weather Pack™ Connector....1948
Install Weather Pack™ Contact....1950
Replace DEUTSCH® Connectors....1952
Replace DEUTSCH DEUTSCH is a trademark of Deutsch Co. Rectangular or Triangular Connectors....1551
Install DEUTSCH® Contact....1956
Replace (Pull Type) Metri-Pack™ Connectors....1958
Replace (Push Type) Metri-Pack™ Connectors....1960
Replace CINCH CINCH is a trademark of the Cinch Co. Connectors....1551
Install CINCH CINCH is a trademark of the Cinch Co. Contact....1551
Repair 32 and 48 Way CINCH CINCH is a trademark of the Cinch Co. Connectors....1551
Section 9016: Six Wheel Drive (6WD)....1969
Group 05: Theory of Operation....1969
6WD System Operation....1969
6WD Pump and Displacement Control Operation....1969
6WD Forward Operation....1969
6WD Pump and Motor Flushing Pump Operation....1969
6WD Charge Circuit Operation....1969
Flushing Valve and Operating Charge Pressure Regulating Valve Operation....1982
6WD Circuit Relief and Make-Up Valve Operation....1969
6WD Engagement Manifold Operation....1969
6WD Motor Operation....1969
6WD Wheel Operation....1969
6WD Precision Mode Operation....1969
6WD Inching Mode Operation....1969
Group 15: Diagnostic Information....1969
6WD System Schematic....1969
6WD System Schematic....1969
6WD System Component Location....1969
No Front Wheel Motion (Both Wheels)....1969
No Front Wheel Motion During Inching Operation (Both Wheels)....1969
No Front Wheel Motion (One Wheel)....1969
Intermittent or Erratic 6WD Operation....1969
6WD Charge Pressure Indicator Light On....1969
6WD Charge Pressure Indicator Light On....1969
Hydraulic Oil Filter....1969
Hydraulic Oil Temperature Indicator Light On....1969
6WD System Oil Temperature Too Hot (6WD oil temperature indicator light on)....1969
Low Torque (One Wheel)....1969
Low Torque (Both Wheels)....1969
Wheel Overspeed (One Wheel)....1969
Operates in Low Speed Only (One Wheel)....1969
Operates in High Speed Only (One Wheel)....1969
Wheel(s) Will Not Stay in Neutral....1969
Operates in One Direction Only....1970
Wheels Rotate Opposite Each Other....1970
6WD Will Not Calibrate (No Diagnostic Trouble Codes)....1970
Group 20: Adjustments....1970
6WD Start-Up Procedure....1970
6WD Pump Control Neutral Adjustment....1970
Group 25: Tests....1970
6WD Oil Warm-Up Procedure....1970
6WD Planetary Brake Leakage Test....1970
6WD Neutral Charge Pressure Test....1970
6WD Neutral Charge Pressure Regulating Valve Test....1970
6WD Operating Charge Pressure Regulating Valve Test....1970
6WD Neutral Charge Pressure Balance Test....1970
6WD Pump Leakage Test....1970
6WD Motor Leakage Test....1970
Pressure Override Valve and 6WD Circuit Relief and Make-Up Valve Test....2086
6WD Motor Flushing Pump Relief Valve Test....1970
6WD Charge Pump Flow Test....1970
6WD Engagement Solenoid Valve Test....1970
Hydraulic Oil Cooler Bypass Valve Pressure Test....2098
Section 9020: Power Train....2100
Group 05: Theory of Operation....2100
DF230 Transmission Operation....2104
Differential Lock Operation....2106
Internal Park Brake Operation....2109
Rear Axle and Tandem Operation....2111
Group 15: Diagnostic Information....2100
Power Train Schematic....2114
Power Train Component Location....2116
Transmission Overfills With Oil....2100
Transmission Slippage....2100
Machine “Jumps” When Inching Pedal Engaged....2100
Machine Lacks Power Or Moves Slow....2100
Transmission Shifts Too Slow (Machine Stops When Changing Gears Under Load)....2100
Transmission Shifts Too Quickly....2100
Machine Will Not Move In Any Gear and Park Brake Indicator Light Is On (No Load Put On Engine When Shifted Into Gear)....2100
Machine Will Not Move (Load Put On Engine Or Engine Stalls When Shifted Into Gear)....2100
Low Pressure In Different Gears Using Same Proportional Solenoid Valve....2100
Machine Creeps In Neutral (Load Put On Engine When Service Brakes Are Applied)....2100
Machine Creeps In Gear With Inching Pedal Fully Depressed....2100
Transmission System Overheats....2100
Transmission Control and Park Brake Lever Does Not Move Freely....2100
Excessive Transmission Noise (Under Load or No Load)....2100
Transmission Engages In a Gear, but Not Gear Selected....2100
Transmission Fails To Change Gear From First Gear Selected....2100
Transmission Faults To Neutral....2100
Excessive Machine Vibration....2100
Erratic Transmission Oil Pressure....2100
Excessive Oil Pressure....2100
Low Oil Pressure In All Gears....2100
Low Pressure In One Gear But Correct In Other Gears....2100
Transmission Breather Oil Leakage....2100
Filter Or Filter Oil Lines Blow Out....2101
Low Lube Pressure In Some Gears But Correct In Other Gears....2101
Excessive Lube Pressure In Some Gears But Correct In Other Gears....2101
Low Transmission Cooler Inlet Pressure And Lube Pressure....2101
Park Brake Engages While Vehicle Is Moving....2101
Park Brake Will Not Release....2101
Park Brake Will Not Hold....2101
Park Brake Overheats....2101
Park Brake Noisy....2101
No Differential Lock Operation....2106
Differential Lock Slippage....2101
Excessive Differential and/or Axle Noise....2101
Group 25: Tests....2101
Differential Oil Warm-Up Procedure....2172
Differential Lock Valve Pressure Test....2174
Differential Lock Charge Pump Flow Test....2176
Differential Oil Cooler Differential Pressure Test....2178
Differential Oil Cooler Bypass Valve Pressure Test....2182
Transmission Oil Cooler Differential Pressure Test....2185
Park Brake Release Pressure Test....2189
Section 9025: Hydraulic System....2190
Group 05: Theory of Operation....2190
Hydraulic System Operation....2195
Hydraulic Pump Operation (S.N. —667937)....2197
Hydraulic Pump Operation (S.N. 667938— )....2199
Hydraulic Fan Pump Operation....2202
Hydraulic System Manifold Operation....2203
Control Valve Operation—Standard Controls....2205
Control Valve Operation—EH Controls....2209
Hydraulic Oil Filter Operation....2213
System Relief Valve Operation....2215
Circuit Relief Valve Operation....2216
Service Brake Valve Operation....2217
Service Brake Accumulator Operation....2219
Hydraulic Fan Drive Operation....2221
Steering System Operation....2225
Steering System Operation—EH Controls....2227
Load Sense Operation With All Functions in Neutral....2229
Load Sense Operation With One Function Activated....2231
Load Sense Operation With Multiple Functions Activated....2233
Wheel Lean, Articulation, Circle Side Shift, Blade Pitch, and Blade Side Shift Valve Operation....2236
Circle Rotate Valve Operation....2238
Saddle Locking Pin Valve Operation....2240
Blade Lift and Auxiliary Valve Operation....2242
Blade Impact Absorption System Operation....2245
Circle Drive Gearbox Operation-Without Slip Clutch....2248
Circle Drive Gearbox Operation-With Slip Clutch....2250
Dual Input Circle Drive Gearbox Operation—If Equipped....2253
Dual Input Circle Drive Gearbox (With Slip Clutch) Operation—If Equipped....2255
Hydraulic Oil Cooler Bypass Manifold Operation....2257
Group 15: Diagnostic Information....2190
Hydraulic System Schematic Master Legend....2262
Hydraulic System Schematic....2266
Hydraulic System Schematic Master Legend—EH Controls....2271
Hydraulic System Schematic—EH Controls....2276
Hydraulic System Component Location....2282
Hydraulic System Component Location—EH Controls....2287
No Hydraulics....2191
Hydraulic System Overheats....2191
Slow Hydraulic Functions....2191
Hydraulic Function (or Pump) Makes “Chattering” Noise....2191
Pump Appears To Be Stuck At Minimum Displacement....2191
Pump Appears To Be Stuck At Maximum Displacement....2191
Function Moves Too Fast....2191
Function Drifts Down....2191
Excessive Effort to Move Function Control Lever....2191
Individual Function Is Slow (Cycle Time Checked Slow)....2191
Slow or Hard Steering....2191
No Steering....2191
Erratic Steering....2191
Excessive Steering Wheel Turns to Steer Machine....2191
Wheels Move After Steering Wheel Stopped....2191
Excessive Vibration of Steering Wheel....2191
Steering Wheel Kickback....2191
Poor or No Brakes (Steering and Hydraulic System Operation Normal)....2191
Aggressive Brakes or Brakes Lock Up....2191
Brakes Drag....2191
Brakes Chatter or Noisy....2191
Delay in Braking....2191
Hydraulic Fan Does Not Reach Full Speed....2191
Hydraulic Fan Runs At Full Speed Only....2191
Hydraulic Fan Does Not Spin....2191
Hydraulic Fan Will Not Reverse Direction....2191
Group 25: Tests....2191
JT02156A Digital Pressure/Temperature Analyzer Kit Installation....2355
Hydraulic Oil Warm-Up Procedure....2356
Vacuum Pump Installation....2357
Hydraulic Pump Standby Pressure Hydraulic Pump Standby Pressure & Load Sense Standby Pressure Test{pgNO}2192 Load Sense Standby Pressure Test....2358
Load Sense Relief Valve Load Sense Relief Valve & Pump Relief Test{pgNO}2192 Pump Relief Test....2363
Load Sense Shuttle Valve Isolation Test—Standard Controls....2368
Load Sense Shuttle Valve Isolation Test—EH Controls....2374
Hydraulic Pump Leakage Test....2380
Hydraulic Pump Flow Test....2382
Service Brake Valve Pressure Test....2385
Service Brake Accumulator Precharge Test....2388
Service Brake Pressure Switch Test....2391
Service Brake Valve Leakage Test....2394
Hydraulic Cylinder Drift Test....2396
Hydraulic Cylinder Leakage Test....2398
Rotary Manifold Leakage Test....2401
Steering System Leakage Test....2405
Service Brake Accumulator Inlet Check Valve Leakage Test....2411
Blade Impact Absorption Accumulator Charge Pressure Test....2414
Blade Impact Absorption Accumulator Hydraulic Discharge Procedure....2417
Secondary Steering Accumulator Charge Pressure Test....2419
Blade Lift Relief Valve Test....2422
Circuit Relief Valve Test—Midmount Scarifier....2425
Saddle Locking Cylinder Pressure Reducing Valve Test....2427
System Relief Valve Pressure Test....2430
Hydraulic Fan Pump Pressure Test....2434
Hydraulic Fan Pump Flow Test....2442
Hydraulic Fan Motor Speed Test....2440
Hydraulic Fan Pump Flow Test....2442
Hydraulic Fan Motor Case Drain Test....2445
Section 9031: Heating and Air Conditioning....2448
Group 05: Theory of Operation....2448
Air Conditioning System Cycle Of Operation....2451
Group 15: Diagnostic Information....2448
Air Conditioner and Heater Component Location....2456
Diagnose Air Conditioning System Malfunctions....2459
Air Conditioning System Does Not Operate....2448
Air Conditioner Does Not Cool Interior of Cab....2448
Air Conditioner Runs Constantly, Too Cold....2448
Diagnose Heater System Malfunctions....2470
Heater System Does Not Operate....2448
Heater Does Not Warm Interior of Cab....2448
Interior Windows Continue to Fog....2448
Group 25: Tests....2448
Refrigerant Cautions and Proper Handling....2482
Air Conditioner and Heater Operational Checks....2483
Refrigerant Leak Test....2487
R134a Oil Charge Capacity....2488
R134a Refrigerant Charge Capacity....2489
Air Conditioner Compressor Clutch Test....2490
Air Conditioner High/Low Pressure Switch Test....2491
Air Conditioner Freeze Control Switch Test....2493
Heater Blower Switch Test....2494
Heater Blower Resistor Test....2495
Heater Blower Motor Test....2497
R134a Air Conditioning System Test....2498
Operating Pressure Diagnostic Chart....2500
John Deere Motor Graders 870G, 870GP, 872G, 872GP Operation and Test Technical Manual (TM13067X19)
