John Deere 770G, 770GP, 772G, and 772GP Motor Graders Diagnosis and Tests Service Technical Manual (TM14070X19)
Complete Diagnosis & Tests Technical Manual with electrical wiring diagrams for John Deere 770G, 770GP, 772G, and 772GP Motor Graders, with workshop information to maintain, diagnose, and rebuild like professional mechanics.
John Deere 770G, 770GP, 772G, and 772GP Motor Graders 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.
TM14070X19 - John Deere 770G, 770GP, 772G, and 772GP Motor Graders Technical Manual (Diagnosis and Tests).pdf
tm14070x28 - John Deere Niveleuses 770G, 770GP, 772G et 772GP.pdf
PRODUCT DETAILS:
Total Pages: 2,323 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English French
Category: Operation and Test
Models:
John Deere - Motor Grader - 1DW770GX_ _F678818—680877
John Deere - Motor Grader - 1DW770GP_ _F678818—680877
TABLE OF CONTENTS
Section 9000: General Information...41
Group 01: Safety...41
Information for European Union Directives and Eurasian Economic Union Technical Regulations Compliance...47
Recognize Safety Information...51
Follow Safety Instructions...52
Operate Only If Qualified...53
Wear Protective Equipment...54
Avoid Unauthorized Machine Modifications...55
Inspect Machine...56
Stay Clear of Moving Parts...57
Avoid High-Pressure Fluids...58
Avoid High-Pressure Oils...59
Work In Ventilated Area...60
Avoid Static Electricity Risk When Refueling...61
High Debris Applications...63
Prevent Fires...64
In Case of Machine Fire...65
Prevent Battery Explosions...66
Handle Chemical Products Safely...67
Handle Starting Fluid Safely...68
Decommissioning — Proper Recycling and Disposal of Fluids and Components...69
Exhaust Filter Ash Handling and Disposal...70
Prepare for Emergencies...71
Clean Debris from Machine...72
Use Steps and Handholds Correctly...73
Start Only From Operator's Seat...74
Use and Maintain Seat Belt...75
Prevent Unintended Machine Movement...76
Avoid Work Site Hazards...78
Keep Riders Off Machine...80
Avoid Backover Accidents...81
Avoid Machine Tip Over and Machine Damage...82
Operating or Traveling On Public Roads...83
Inspect and Maintain ROPS...84
Travel Safely...85
Prevent Acid Burns...86
Add and Operate Attachments Safely...88
Park and Prepare for Service Safely...89
Service Machines Safely...90
Clean Exhaust Filter Safely...91
Service Cooling System Safely...94
Remove Paint Before Welding or Heating...95
Make Welding Repairs Safely...96
Drive Metal Pins Safely...97
Service Tires Safely...98
Use Proper Lifting Equipment...99
Section 9001: Diagnostics...100
Group 10: Transmission Control Unit (TCU) Diagnostic Trouble Codes...121
Transmission Control Unit (TCU) Diagnostic Trouble Codes...121
000070.03 - Park Brake Pressure Switch Circuit Fault...100
000070.04 - Park Brake Pressure Switch Circuit Fault...100
000177.00 - Transmission Oil Temperature High...100
000177.03 - Transmission Oil Temperature Sensor Circuit Fault...100
000177.04 - Transmission Oil Temperature Sensor Circuit Fault...100
000177.16 - Transmission Oil Temperature High...100
000237.02 - Invalid VIN...100
000237.14 - VIN Options Not Learned...100
000237.31 - VIN Message Missing...100
000444.03 - Unswitched Battery Voltage...100
000444.04 - Unswitched Battery Voltage...100
000525.02 - Undefined Gear...100
000525.07 - Undefined Gear...100
000525.12 - Undefined Gear...100
000619.03 - Transmission Park Circuit Fault...100
000619.05 - Transmission Park Circuit Fault...100
000619.06 - Transmission Park Circuit Fault...100
000619.07 - Park Fault...100
000619.31 - Park Fault...100
000628.12 - Control Unit Programming...100
001231.12 - Communication System Message Missing...100
001231.14 - Communication System Message Fault...100
002000.02 - Communication System Fault...100
002000.09 - Communication System Message Missing...100
002003.09 - Communication System Message Missing...100
002033.02 - Communication System Fault...100
002033.09 - Communication System Message Missing...100
002034.09 - Communication System Message Missing...100
002141.09 - Communication System Message Missing...100
002161.02 - Communication System Message Missing...100
002161.09 - Communication System Message Missing...101
002213.02 - Communication System Message Missing...101
002213.09 - Communication System Message Missing...101
002225.02 - Communication System Message Missing...101
002225.09 - Communication System Message Missing...101
002833.07 - Movement While Park Brake Applied...101
002833.31 - Park Fault...101
003510.03 - TCU Sensor Supply #2...101
003510.04 - TCU Sensor Supply #2...101
003511.03 - TCU Sensor Supply #3...101
003511.04 - TCU Sensor Supply #3...101
516321.03 - Switched Battery Voltage...101
516321.04 - Switched Battery Voltage...101
516755.03 - Transmission Rev Circuit Fault...101
516755.05 - Transmission Rev Circuit Fault...101
516755.06 - Transmission Rev Circuit Fault...101
516770.03 - Transmission Left Rev Lamp Circuit Fault...101
516770.05 - Transmission Left Rev Lamp Circuit Fault...101
516770.06 - Transmission Left Rev Lamp Circuit Fault...101
516773.03 - Transmission Right Rev Lamp Circuit Fault...101
516773.05 - Transmission Right Rev Lamp Circuit Fault...101
516773.06 - Transmission Right Rev Lamp Circuit Fault...101
517056.12 - End of Line File - EOL...101
517056.31 - End of Line File - EOL...101
521601.12 - End of Line File - EOL...101
521601.31 - End of Line File - EOL...101
522087.07 - Park Fault...101
522087.31 - Park Fault...101
522252.00 - Clutch 1 Hold Pressure Too High...101
522252.01 - Clutch 1 Hold Pressure Too Low...101
522253.00 - Clutch 2 Hold Pressure Too High...101
522253.01 - Clutch 2 Hold Pressure Too Low...101
522254.00 - Clutch 3 Hold Pressure Too High...101
522254.01 - Clutch 3 Hold Pressure Too Low...102
522255.00 - Clutch 4 Hold Pressure Too High...102
522255.01 - Clutch 4 Hold Pressure Too Low...102
522256.00 - Clutch A Hold Pressure Too High...102
522256.01 - Clutch A Hold Pressure Too Low...102
522257.00 - Clutch B Hold Pressure Too High...102
522257.01 - Clutch B Hold Pressure Too Low...102
522258.00 - Clutch C Hold Pressure Too High...102
522258.01 - Clutch C Hold Pressure Too Low...102
522259.00 - Clutch D Hold Pressure Too High...102
522259.01 - Clutch D Hold Pressure Too Low...102
522414.00 - Transmission Clutch Temperature Fault...102
522414.03 - Transmission Clutch D Solenoid Circuit Fault...102
522414.05 - Transmission Clutch D Solenoid Circuit Fault...102
522414.06 - Transmission Clutch D Solenoid Circuit Fault...102
522507.14 - Transmission Calibration Fault...102
522517.31 - Engine Stall Prevention Active...102
523438.31 - End of Line File - EOL...102
523655.03 - Forward and Reverse Both Active...102
523697.03 - Inching Pedal Circuit Fault...102
523697.04 - Inching Pedal Circuit Fault...102
523697.31 - Inching Pedal System Fault...102
523699.31 - Transmission Speed Clutch Slipping...102
523700.31 - Transmission Clutch Slipping...102
523708.03 - Inching Pedal Circuit Fault...102
523708.04 - Inching Pedal Circuit Fault...102
523708.31 - Inching Pedal Circuit Fault...102
523712.31 - Transmission Calibration Fault...102
523717.31 - Transmission Calibration Fault...102
523718.31 - Transmission Calibration Fault...102
523720.00 - Clutch Fill Time Too Long...102
523720.01 - Clutch Fill Time Too Short...102
523721.00 - Clutch Fill Time Too Long...102
523721.01 - Clutch Fill Time Too Short...103
523722.00 - Clutch Fill Time Too Long...103
523722.01 - Clutch Fill Time Too Short...103
523723.00 - Clutch Fill Time Too Long...103
523723.01 - Clutch Fill Time Too Short...103
523724.00 - Clutch Fill Time Too Long...103
523724.01 - Clutch Fill Time Too Short...103
523725.00 - Clutch Fill Time Too Long...103
523725.01 - Clutch Fill Time Too Short...103
523726.00 - Clutch Fill Time Too Long...103
523726.01 - Clutch Fill Time Too Short...103
523727.00 - Clutch Fill Time Too Long...103
523727.01 - Clutch Fill Time Too Short...103
523728.31 - Transmission Calibration Fault...103
523729.31 - Transmission Calibration Fault...103
523730.31 - Transmission Calibration Fault...103
523731.31 - Transmission Calibration Fault...103
523732.31 - Transmission Calibration Fault...103
523733.31 - Transmission Calibration Fault...103
523734.31 - Transmission Calibration Fault...103
523761.00 - Transmission Clutch Temperature Fault...103
523761.03 - Transmission Clutch Circuit Fault...103
523761.05 - Transmission Clutch Circuit Fault...103
523761.06 - Transmission Clutch Circuit Fault...103
523762.00 - Transmission Clutch Temperature Fault...103
523762.03 - Transmission Clutch Circuit Fault...103
523762.05 - Transmission Clutch Circuit Fault...103
523762.06 - Transmission Clutch Circuit Fault...103
523763.00 - Transmission Clutch Temperature Fault...103
523763.03 - Transmission Clutch Circuit Fault...103
523763.05 - Transmission Clutch Circuit Fault...103
523763.06 - Transmission Clutch Circuit Fault...103
523764.00 - Transmission Clutch Temperature Fault...103
523764.03 - Transmission Clutch Circuit Fault...104
523764.05 - Transmission Clutch Circuit Fault...104
523764.06 - Transmission Clutch Circuit Fault...104
524173.00 - Inching Pedal Circuit Fault...104
524173.01 - Inching Pedal Circuit Fault...104
524173.03 - Inching Pedal Circuit Fault...104
524173.04 - Inching Pedal Circuit Fault...104
524173.12 - Inching Pedal System Fault...104
524173.31 - Inching Pedal Circuit Fault...104
524271.00 - Transmission Clutch Temperature Fault...104
524271.03 - Transmission Clutch Circuit Fault...104
524271.05 - Transmission Clutch Circuit Fault...104
524271.06 - Transmission Clutch Circuit Fault...104
524272.00 - Transmission Clutch Temperature Fault...104
524272.03 - Transmission Clutch Circuit Fault...104
524272.05 - Transmission Clutch Circuit Fault...104
524272.06 - Transmission Clutch Circuit Fault...104
524273.00 - Transmission Clutch Temperature Fault...104
524273.03 - Transmission Clutch Circuit Fault...104
524273.05 - Transmission Clutch Circuit Fault...104
524273.06 - Transmission Clutch Circuit Fault...104
Group 20: Engine Control Unit (ECU) Diagnostic Trouble Codes...382
Engine Control Unit (ECU) Diagnostic Trouble Codes...382
000029.03 - Decel Pedal Short to Power...104
000091.03 - Accel Pedal Short to Power...104
000091.04 - Accel Pedal Open or Short...104
000111.01 - Coolant Level Extremely Low...104
000111.07 - Coolant Level Sensor Circuit Fault...104
000111.18 - Coolant Level Very Low...104
000237.02 - Vehicle Identification Conflict...104
000237.13 - Vehicle Identification Fault...104
000237.31 - Communication Fault...104
001321.05 - Starter Relay Open Circuit...104
001321.06 - Starter Relay High Current...105
001321.16 - Too Long to Start...105
001321.31 - Starter Sol Open Circuit...105
001761.01 - Diesel Exhaust Fluid is Extremely Low...105
001761.18 - Diesel Exhaust Fluid is Very Low...105
002003.09 - CAN Comm Lost for TCU...105
002033.09 - CAN Comm Lost for VCU...105
003031.12 - Diesel Exhaust Fluid Temperature Sensor Fault...105
003353.31 - Alternator Output Fault...105
003354.31 - Sensor Supply 3 Circuit Fault...105
003516.01 - Diesel Exhaust Fluid Concentration Extremely Low...105
003516.07 - Diesel Exhaust Fluid Concentration Invalid...105
003516.09 - Diesel Exhaust Fluid Tank Header Communication Fault...105
003516.12 - Diesel Exhaust Fluid Concentration Sensor Fault...105
003517.07 - Diesel Exhaust Fluid Tank Level Sensor Invalid...105
003517.12 - Diesel Exhaust Fluid Tank Level Sensor Fault...105
003587.05 - Ether Starting Aid Circuit Fault...105
003587.06 - Ether Starting Aid Circuit Fault...105
004366.05 - DEF Tank Heater Coolant Control Valve Circuit Has High Resistance...105
004366.06 - DEF Tank Heater Coolant Control Valve Circuit Has Low Resistance...105
004366.16 - DEF Tank Temperature Moderately High...105
004366.18 - DEF Tank Insufficient Heating Fault...105
005004.06 - Softstart Solenoid Current High...105
524225.31 - Start Signal Missing...105
Group 30: Primay Display Unit (PDU) Diagnostic Trouble Codes...105
Primary Display Unit (PDU) Diagnostic Trouble Codes...449
000237.02 - Vehicle Identification Number...105
000237.13 - Vehicle Identification Number...105
000237.31 - Vehicle Identification Number...105
000629.12 - Control Unit Fault...105
000920.03 - Audible Alarm Circuit Fault...105
000920.04 - Audible Alarm Circuit Fault...105
002000.09 - Communication System Fault...105
516628.10 - Display Button - UP...106
516629.10 - Display Button - DOWN...106
516630.10 - Display Button - SELECT...106
517057.12 - EE Vehicle Hours Checksum Failure...106
517170.10 - Display Button - LEFT...106
517171.10 - Display Button - RIGHT...106
521859.10 - Display Button - MENU...106
524050.12 - Real Time Clock...106
Group 40: Vehicle Control Unit (VCU) Diagnostic Trouble Codes...468
Vehicle Control Unit (VCU) Diagnostic Trouble Codes...468
000096.03 - Fuel Level Sensor Circuit Fault...106
000096.04 - Fuel Level Sensor Circuit Fault...106
000117.01 - Service Brake Pressure Low...106
000117.03 - Service Brake Accumulator Switch Circuit Fault...106
000117.04 - Service Brake Accumulator Switch Circuit Fault...106
000167.03 - Switched Power Circuit Fault...106
000167.04 - Switched Power Circuit Fault...106
000168.03 - Unswitched Power Circuit Fault...106
000168.04 - Unswitched Power Circuit Fault...106
000237.02 - Vehicle Identification Fault...106
000237.13 - Vehicle Identification Fault...106
000237.31 - Vehicle Identification Fault...106
000583.03 - Mainfall Sensor Circuit Fault...106
000583.04 - Mainfall Sensor Circuit Fault...106
000628.12 - Control Unit Programming...106
000629.12 - Control Unit Fault...106
000639.12 - Communication System Message Missing...106
000639.14 - Communication System Fault...106
000746.03 - Differential Lock Solenoid Circuit Fault...106
000746.05 - Differential Lock Solenoid Circuit Fault...106
000746.06 - Differential Lock Solenoid Circuit Fault...106
000876.03 - A/C Compressor Clutch Circuit Fault...106
000876.05 - A/C Compressor Clutch Circuit Fault...106
000876.06 - A/C Compressor Clutch Circuit Fault...107
000880.03 - Stop Lamp Circuit (Red) Fault...107
000880.05 - Stop Lamp Circuit (Red) Fault...107
000880.06 - Stop Lamp Circuit (Red) Fault...107
000977.03 - Reversing Fan Solenoid Circuit Fault...107
000977.05 - Reversing Fan Solenoid Circuit Fault...107
000977.06 - Reversing Fan Solenoid Circuit Fault...107
000977.07 - Reversing Fan Pressure High...107
001045.04 - Brake Light Switch Circuit Fault...107
001071.03 - Fan Speed Solenoid Circuit Fault...107
001071.04 - Fan Speed Solenoid Circuit Fault...107
001071.05 - Fan Speed Solenoid Circuit Fault...107
001071.06 - Fan Speed Solenoid Circuit Fault...107
001231.12 - Communication System Message Missing...107
001231.14 - Communication System Fault...107
001569.31 - Engine Derated...107
001638.00 - Hydraulic Oil Temperature High...107
001638.03 - Hydraulic Oil Temperature Sensor Circuit Fault...107
001638.04 - Hydraulic Oil Temperature Sensor Circuit Fault...107
001639.00 - Hydraulic Fan Speed High...107
001639.16 - Hydraulic Fan Speed High...107
001639.18 - Hydraulic Fan Speed Low...107
001713.01 - Hydraulic Oil Filter Restricted...107
001713.03 - Hydraulic Oil Filter Restriction Switch Circuit Fault...107
001762.01 - Hydraulic Oil Pressure Low...107
001762.03 - Hydraulic Pressure Sensor Circuit Fault...107
001762.04 - Hydraulic Pressure Sensor Circuit Fault...107
001983.03 - Steering Valve Circuit Fault...107
001983.04 - Steering Valve Circuit Fault...107
001983.05 - Steering Valve Circuit Fault...107
001983.06 - Steering Valve Circuit Fault...107
001984.03 - Steering Valve Circuit Fault...107
001984.04 - Steering Valve Circuit Fault...107
001984.05 - Steering Valve Circuit Fault...108
001984.06 - Steering Valve Circuit Fault...108
002000.09 - Communication System Message Missing...108
002003.09 - Communication System Message Missing...108
002034.09 - Communication System Message Missing...108
002040.09 - Communication System Message Missing...108
002141.09 - Communication System Message Missing...108
002160.09 - Communication System Message Missing...108
002161.09 - Communication System Message Missing...108
002213.09 - Communication System Message Missing...108
002348.03 - Hi Beam Light Circuit Fault...108
002348.05 - Hi Beam Light Circuit Fault...108
002348.06 - Hi Beam Light Circuit Fault...108
002350.03 - Low Beam Light Circuit Fault...108
002350.05 - Low Beam Light Circuit Fault...108
002350.06 - Low Beam Light Circuit Fault...108
002352.06 - Cab Front Work Light Circuit Fault...108
002354.06 - Front Work Light Circuit Fault...108
002356.06 - Front Cab Corner Light Circuit Fault...108
002358.06 - Front Work Light Circuit Fault...108
002362.06 - Rear Cab Corner Light Circuit Fault...108
002366.06 - Right Side Work Light Circuit Fault...108
002367.04 - Left Turn Signal Lights Command Switch Circuit Fault...108
002368.03 - Marker/Tail Light Circuit Fault...108
002368.05 - Marker/Tail Light Circuit Fault...108
002368.06 - Left Turn Light Circuit Fault...108
002369.04 - Right Turn Signal Lights Command Switch Circuit Fault...108
002370.03 - Marker/Tail Light Circuit Fault...108
002370.05 - Marker/Tail Light Circuit Fault...108
002370.06 - Right Turn Light Circuit Fault...108
002378.03 - Marker/Tail Light Circuit Fault...108
002378.05 - Marker/Tail Light Circuit Fault...108
002378.06 - Marker/Tail Light Circuit Fault...108
002386.06 - Rotary Beacon Circuit Fault...109
002642.03 - Left Heated Mirror Circuit Fault...109
002642.05 - Left Heated Mirror Circuit Fault...109
002642.06 - Left Heated Mirror Circuit Fault...109
002874.04 - Hi Beam Switch Circuit Fault...109
003318.03 - Blade Pitch Sensor Circuit Fault...109
003318.04 - Blade Pitch Sensor Circuit Fault...109
003319.03 - Slope Sensor Circuit Fault...109
003319.04 - Slope Sensor Circuit Fault...109
003331.03 - Circle Rotate Sensor Circuit Fault...109
003331.04 - Circle Rotate Sensor Circuit Fault...109
003509.03 - Sensor Supply 1 Circuit Fault...109
003509.04 - Sensor Supply 1 Circuit Fault...109
003510.03 - Sensor Supply 2 Circuit Fault...109
003510.04 - Sensor Supply 2 Circuit Fault...109
003511.03 - Sensor Supply 3 Circuit Fault...109
003511.04 - Sensor Supply 3 Circuit Fault...109
004026.03 - Right Heated Mirror Circuit Fault...109
004026.05 - Right Heated Mirror Circuit Fault...109
004026.06 - Right Heated Mirror Circuit Fault...109
516688.06 - Left Rear Beacon Light Driver Circuit Fault...109
516689.06 - Right Rear Beacon Light Driver Circuit Fault...109
516690.03 - Engine Compartment Light 1 Circuit Fault...109
516690.06 - Engine Compartment Light 1 Circuit Fault...109
516691.03 - Engine Compartment Light 2 Circuit Fault...109
516691.06 - Engine Compartment Light 2 Circuit Fault...109
520450.03 - Saddle Lock Pin Switch Circuit Fault...109
520911.03 - Engine Compartment Light Switch Circuit Fault...109
520911.04 - Engine Compartment Light Switch Circuit Fault...109
521465.02 - Joystick Mismatch...109
521466.03 - Fan Direction/Relief Actuator Circuit Fault...109
521466.05 - Fan Direction/Relief Actuator Circuit Fault...109
521466.06 - Fan Direction/Relief Actuator Circuit Fault...109
521900.03 - Articulation Angle Sensor Circuit Fault...110
521900.04 - Articulation Angle Sensor Circuit Fault...110
522176.01 - Secondary Steering Active...110
522340.03 - Saddle Lock Solenoid Circuit Fault...110
522340.04 - Saddle Lock Solenoid Circuit Fault...110
522340.05 - Saddle Lock Solenoid Circuit Fault...110
522340.06 - Saddle Lock Solenoid Circuit Fault...110
522343.03 - Rear Window Defrost Relay Circuit Fault...110
522343.05 - Rear Window Defrost Relay Circuit Fault...110
522343.06 - Rear Window Defrost Relay Circuit Fault...110
522375.01 - Transmission Oil Filter Restricted...110
522375.03 - Transmission Oil Filter Restriction Switch Circuit Fault...110
522415.06 - Front Lower Washer Pump Circuit Fault...110
522416.06 - Front Lower Wiper Hi Speed Circuit Fault...110
522418.06 - Front Lower Wiper Low Speed Circuit Fault...110
522433.06 - Rear Wiper Low Speed Circuit Fault...110
522434.06 - Front Wiper Low Speed Circuit Fault...110
522435.06 - Front Wiper Hi Speed Circuit Fault...110
522796.06 - Rear Washer Pump Circuit Fault...110
522797.06 - Front Washer Pump Circuit Fault...110
523688.03 - Steering Angle Sensor Circuit Fault...110
523688.04 - Steering Angle Sensor Circuit Fault...110
523689.04 - Diff Lock Switch Circuit Fault...110
523901.04 - Front Window Switch Circuit Fault...110
524044.01 - Axle Oil Filter Restricted...110
524044.03 - Axle Oil Filter Restriction Switch Circuit Fault...110
Group 50: Hydraulic Valve Controller (HVC) Diagnostic Trouble Codes...748
Hydraulic Valve Controller (HVC) Diagnostic Trouble Codes...748
000237.02 - Vehicle Identification Fault...110
000237.13 - Vehicle Identification Fault...110
000237.31 - Vehicle Identification Fault...110
000628.12 - Control Unit Programming...110
000629.12 - Control Unit Fault...110
000639.12 - Communication System Message Missing...111
000639.14 - Communication System Fault...111
001231.12 - Communication System Message Missing...111
001231.14 - Communication System Fault...111
001503.04 - Left Armrest Position Circuit Fault...111
001503.13 - Left Armrest Position Circuit Fault...111
001565.04 - Left Armrest Down Switch Circuit Fault...111
001566.04 - Right Armrest Down Switch Circuit Fault...111
001899.03 - Circle Side Shift Valve Circuit Fault...111
001899.04 - Circle Side Shift Valve Circuit Fault...111
001899.15 - Circle Side Shift Valve Warm Up Circuit...111
001899.17 - Circle Side Shift Valve Warm Up Circuit...111
001900.03 - Circle Side Shift Valve Circuit Fault...111
001900.04 - Circle Side Shift Valve Circuit Fault...111
001900.15 - Circle Side Shift Valve Warm Up Circuit...111
001900.17 - Circle Side Shift Valve Warm Up Circuit...111
001911.03 - Wheel Lean Valve Circuit Fault...111
001911.04 - Wheel Lean Valve Circuit Fault...111
001911.15 - Wheel Lean Valve Warm Up Circuit Fault...111
001911.17 - Wheel Lean Valve Warm Up Circuit Fault...111
001912.03 - Wheel Lean Valve Circuit Fault...111
001912.04 - Wheel Lean Valve Circuit Fault...111
001912.15 - Wheel Lean Valve Warm Up Circuit Fault...111
001912.17 - Wheel Lean Valve Warm Up Circuit Fault...111
001923.03 - Right Blade Lift Valve Circuit Fault...111
001923.04 - Right Blade Lift Valve Circuit Fault...111
001923.15 - Right Blade Lift Valve Warm Up Circuit Fault...111
001923.17 - Right Blade Lift Valve Warm Up Circuit Fault...111
001924.03 - Right Blade Lift Valve Circuit Fault...111
001924.04 - Right Blade Lift Valve Circuit Fault...111
001924.15 - Right Blade Lift Valve Warm Up Circuit Fault...111
001924.17 - Right Blade Lift Valve Warm Up Circuit Fault...111
001935.03 - Articulation Valve Circuit Fault...111
001935.04 - Articulation Valve Circuit Fault...112
001935.15 - Articulation Valve Warm Up Circuit Fault...112
001935.17 - Articulation Valve Warm Up Circuit Fault...112
001936.03 - Articulation Valve Circuit Fault...112
001936.04 - Articulation Valve Circuit Fault...112
001936.15 - Articulation Valve Warm Up Circuit Fault...112
001936.17 - Articulation Valve Warm Up Circuit Fault...112
001947.03 - Circle Rotate Valve Circuit Fault...112
001947.04 - Circle Rotate Valve Circuit Fault...112
001947.15 - Circle Rotate Valve Warm Up Circuit Fault...112
001947.17 - Circle Rotate Valve Warm Up Circuit Fault...112
001948.03 - Circle Rotate Valve Circuit Fault...112
001948.04 - Circle Rotate Valve Circuit Fault...112
001948.15 - Circle Rotate Valve Warm Up Circuit Fault...112
001948.17 - Circle Rotate Valve Warm Up Circuit Fault...112
001959.03 - Blade Side Shift Valve Circuit Fault...112
001959.04 - Blade Side Shift Valve Circuit Fault...112
001959.15 - Blade Side Shift Valve Warm Up Circuit...112
001959.17 - Blade Side Shift Valve Warm Up Circuit...112
001960.03 - Blade Side Shift Valve Circuit Fault...112
001960.04 - Blade Side Shift Valve Circuit Fault...112
001960.15 - Blade Side Shift Valve Warm Up Circuit Fault...112
001960.17 - Blade Side Shift Valve Warm Up Circuit Fault...112
001971.03 - Left Blade Lift Valve Circuit Fault...112
001971.04 - Left Blade Lift Valve Circuit Fault...112
001971.15 - Left Blade Lift Valve Warm Up Circuit Fault...112
001971.17 - Left Blade Lift Valve Warm Up Circuit Fault...112
001972.03 - Left Blade Lift Valve Circuit Fault...112
001972.04 - Left Blade Lift Valve Circuit Fault...112
001972.15 - Left Blade Lift Valve Warm Up Circuit Fault...112
001972.17 - Left Blade Lift Valve Warm Up Circuit Fault...112
002000.09 - Communication System Message Missing...112
002003.09 - Communication System Message Missing...112
002033.09 - Communication System Message Missing...113
002034.09 - Communication System Message Missing...113
002040.09 - Communication System Message Missing...113
002160.09 - Communication System Message Missing...113
002161.09 - Communication System Message Missing...113
005493.04 - Right Armrest Position Circuit Fault...113
005493.13 - Right Armrest Position Circuit Fault...113
520752.04 - Return to Straight Switch 1 Circuit Fault...113
520753.04 - Return to Straight Switch 2 Circuit Fault...113
520754.04 - Return to Straight Switch 3 Circuit Fault...113
520755.04 - Return to Straight Switch 4 Circuit Fault...113
523849.13 - Return to Straight Module Circuit Fault...113
Group 60: Auxiliary Valve Controller (AVC) Diagnostic Trouble Codes...900
Auxiliary Valve Controller (AVC) Diagnostic Trouble Codes...900
000237.02 - Vehicle Identification Fault...113
000237.13 - Vehicle Identification Fault...113
000237.31 - Vehicle Identification Fault...113
000628.12 - Control Unit Programing...113
000629.12 - Control Unit Fault...113
001995.03 - Blade Pitch Valve Circuit Fault...113
001995.04 - Blade Pitch Valve Circuit Fault...113
001995.15 - Blade Pitch Valve Warm Up Circuit Fault...113
001995.17 - Blade Pitch Valve Warm Up Circuit Fault...113
001996.03 - Blade Pitch Valve Circuit Fault...113
001996.04 - Blade Pitch Valve Circuit Fault...113
001996.15 - Blade Pitch Valve Warm Up Circuit Fault...113
001996.17 - Blade Pitch Valve Warm Up Circuit Fault...113
002000.09 - Communication System Message Missing...113
002003.09 - Communication System Message Missing...113
002033.09 - Communication System Message Missing...113
002040.09 - Communication System Message Missing...113
002160.09 - Communication System Message Missing...113
002165.09 - Communication System Message Missing...113
002213.09 - Communication System Message Missing...114
002263.03 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002263.04 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002263.15 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002263.17 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002264.03 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002264.04 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002264.15 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002264.17 - Under Cab Auxiliary Valve 1 Circuit Fault...114
002275.03 - Under Cab Auxiliary Valve 2 Circuit Fault...114
002275.04 - Under Cab Auxiliary Valve 2 Circuit Fault...114
Section 9005: Operational Checkout Procedure...1220
Group 10: Operational Checkout Procedure...1220
Operational Checkout...1258
Section 9010: Engine...1295
Group 05: Theory of Operation...1295
John Deere Engine Theory of Operation...1297
Exhaust Aftertreatment...1298
Cold Start Aid—If Equipped...1299
Soft Start...1301
Group 10: System Diagrams...1295
Engine Sampling Port Location...1303
Engine Cooling System Component Location...1304
Engine Fuel System Component Location...1305
Engine Intake and Exhaust Component Location...1306
Group 15: Diagnostic Information...1295
John Deere Engine Diagnostic Information...1308
Group 20: Adjustments...1295
John Deere Engine Adjustments...1310
Service Filter Cleaning...1311
Group 25: Tests...1295
John Deere Engine Tests...1313
Fluid Sampling Procedure...1314
Engine Slow and Fast Idle Speed Check...1319
Radiator Temperature Differential Test...1320
Exhaust Emissions Test Point...1322
Section 9015: Electrical System...1324
Group 05: Theory of Operation...1324
Controller Area Network (CAN) Theory of Operation...1334
Start and Charge Circuits Theory of Operation...1338
Park Brake Circuit Theory of Operation...1344
Primary Display Unit (PDU) and Sealed Switch Module (SSM) Circuits Theory of Operation...1346
Engine Control Unit (ECU) Circuit Theory of Operation...1350
Exhaust Aftertreatment Circuit Theory of Operation...1362
Transmission Control Unit (TCU) Circuit Theory of Operation...1370
Hydraulic Valve Controller (HVC) Circuit Theory of Operation...1378
Auxiliary Valve Controller (AVC) Circuit Theory of Operation...1386
Six-Wheel Drive (6WD) Circuit Theory of Operation...1391
Vehicle Control Unit (VCU) Circuit Theory of Operation...1396
Hydraulic Fan Speed and Fan Reversing Circuits Theory of Operation...1405
Differential Lock Circuit Theory of Operation...1410
Saddle Lock Circuit Theory of Operation...1413
Drive Lights, Marker Lights, Hazards, and Turn Lights Circuits Theory of Operation...1415
Work Lights Circuit Theory of Operation...1419
Brake Lights and Brake Accumulator Pressure Warning Circuit Theory of Operation...1422
Backup Lights Circuit Theory of Operation—If Equipped...1424
Beacon Light Circuit Theory of Operation—If Equipped...1426
Wipers and Washers Circuits Theory of Operation...1428
Rear Window Defog and Heated Side Mirrors Circuits Theory of Operation...1433
Air Conditioner, Heater, and Precleaner Circuits Theory of Operation...1436
JDLink™ Circuit Theory of Operation...1440
Group 10: System Diagrams...1324
Electrical Diagram Information...1446
Electrical Schematic Symbols...1450
Fuse and Relay Specifications...1452
System Functional Schematic, Wiring Diagram, and Component Location Master Legend...1454
System Functional Schematic...1464
Power and Ground Cables Component Location...1472
Power and Ground Cables Wiring Diagram...1473
Front 6WD Harness (W10) Component Location...1476
Front 6WD Harness (W10) Wiring Diagram...1478
Cab Roof Harness (W14) Component Location...1479
Cab Roof Harness (W14) Wiring Diagram...1481
Cab Interior Harness (W15) Component Location—6WD...1482
Cab Interior Harness (W15) Wiring Diagram—6WD...1486
Cab Interior Harness (W16) Component Location—Non 6WD...1490
Cab Interior Harness (W16) Wiring Diagram—Non 6WD...1494
Front Motor Speed Sensor Harnesses (W17 and W18) Component Location—6WD...1498
Front Motor Speed Sensor Harnesses (W17 and W18) Wiring Diagram—6WD...1499
Blade Impact Harness (W19) Component Location—If Equipped...1501
Blade Impact Harness (W19) Wiring Diagram—If Equipped...1502
Drive and Turn Lights Harnesses (W22 and W23) Component Location...1503
Drive and Turn Lights Harnesses (W22 and W23) Wiring Diagram...1504
Steering Angle Sensor Harness (W24) Component Location—6WD...1506
Steering Angle Sensor Harness (W24) Wiring Diagram—6WD...1507
Front Platform Harness (W25) Component Location...1508
Front Platform Harness (W25) Wiring Diagram...1510
Rear Platform Harness (W26) Component Location...1515
Rear Platform Harness (W26) Wiring Diagram...1517
Rear Camera Harness (W27) Component Location—If Equipped...1519
Rear Camera Harness (W27) Wiring Diagram—If Equipped...1520
Fan Door Harness (W31) Component Location...1521
Fan Door Harness (W31) Wiring Diagram...1522
Heater and Air Conditioner Harness (W32) Component Location...1523
Heater and Air Conditioner Harness (W32) Wiring Diagram...1524
Radio Harness (W33) Component Location...1525
Radio Harness (W33) Wiring Diagram...1527
Midstructure Harness (W34) Component Location...1528
Midstructure Harness (W34) Wiring Diagram...1529
Transmission Harness (W35) Component Location...1530
Transmission Harness (W35) Wiring Diagram...1531
Tilt Console Harness (W36) Component Location...1533
Tilt Console Harness (W36) Wiring Diagram...1535
Electrohydraulic (EH) Main Cab Harness (W38) Component Location...1538
Electrohydraulic (EH) Main Cab Harness (W38) Wiring Diagram...1540
Electrohydraulic (EH) Main Frame Harness (W39) Component Location...1542
Electrohydraulic (EH) Main Frame Harness (W39) Wiring Diagram...1544
Electrohydraulic (EH) Draft Frame Harness (W40) Component Location...1547
Electrohydraulic (EH) Draft Frame Harness (W40) Wiring Diagram...1548
Fan Door Grounding Harness (W41) Component Location...1549
Fan Door Grounding Harness (W41) Wiring Diagram...1550
Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Component Location...1551
Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Wiring Diagram...1552
Satellite Radio Harness (W46) Component Location—If Equipped...1554
Satellite Radio Harness (W46) Wiring Diagram—If Equipped...1555
Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Component Location...1556
Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Wiring Diagram...1557
Engine Interface Harness (W50) Component Location...1559
Engine Interface Harness (W50) Wiring Diagram...1560
Engine Harness (W51) Component Location...1561
Engine Harness (W51) Wiring Diagram...1563
Low-Pressure Fuel System Harness (W52) Component Location...1566
Low-Pressure Fuel System Harness (W52) Wiring Diagram...1568
Exhaust Aftertreatment Harness (W53) Component Location...1569
Exhaust Aftertreatment Harness (W53) Wiring Diagram...1570
Diesel Exhaust Fluid (DEF) Harness (W54) Component Location...1571
Diesel Exhaust Fluid (DEF) Harness (W54) Wiring Diagram...1573
Selective Catalytic Reduction (SCR) Harness (W55) Component Location...1574
Selective Catalytic Reduction (SCR) Harness (W55) Wiring Diagram...1576
Tail Light Harnesses (W57 and W58) Component Location...1577
Tail Light Harnesses (W57 and W58) Wiring Diagram...1579
Auxiliary Radio Input Harness (W59) Component Location—If Equipped...1583
Auxiliary Radio Input Harness (W59) Wiring Diagram—If Equipped...1584
Rear Camera Display Harness (W67) Component Location...1585
Rear Camera Display Harness (W67) Wiring Diagram...1586
Hydraulic Pump Pressure Sensor Harness (W68) Component Location...1587
Hydraulic Pump Pressure Sensor Harness (W68) Wiring Diagram...1588
Drive Light Extension Jumper Harnesses (W75 and W76) Component Location—If Equipped...1589
Drive Light Extension Jumper Harnesses (W75 and W76) Wiring Diagram—If Equipped...1591
Diesel Fired Coolant Heater (DFCH) Harness (W77) Component Location—If Equipped...1593
Diesel Fired Coolant Heater Harness (W77) Wiring Diagram—If Equipped...1594
Six-Wheel Drive (6WD) Pump Harness (W90) Component Location...1596
Six-Wheel Drive (6WD) Pump Harness (W90) Wiring Diagram...1597
JDLink™ Harnesses (W6002 and W6003) Component Location—If Equipped...1599
JDLink™ Modular Telematics Gateway (MTG) Harness (W6002) Wiring Diagram—If Equipped...1601
JDLink™ Satellite (SAT) Harness (W6003) Wiring Diagram—If Equipped...1602
Group 15: Diagnostic Information...1327
Vehicle Control Unit (VCU) Outputs...1607
Service ADVISOR™ Application...1611
Service ADVISOR™ Connection Procedure...1612
Service ADVISOR™ Remote (SAR) Connection Procedure...1614
Reading Diagnostic Trouble Codes (DTCs) With Service ADVISOR™ Application...1616
Intermittent Diagnostic Trouble Code (DTC) Diagnostics...1619
Cross Slope Diagnostics...1620
JDLink™ Connection Procedure—If Equipped...1629
Group 16: Monitor Operation...1327
Primary Display Unit (PDU)—Service Mode...1632
Service Menu—Display Settings—Menu Access...1634
Service Menu—Calibrations—Six-Wheel Drive (6WD)...1635
Service Menu—Calibrations—Transmission...1636
Service Menu—Calibrations—Articulation Angle...1637
Service Menu—Diagnostics—Codes—Clear Codes...1638
Service Menu—Diagnostics—OBD Tool...1639
Service Menu—Diagnostics—OBD Tool—Auxiliary Valve Controller (AVC)...1641
Service Menu—Diagnostics—OBD Tool—Hydraulic Valve Controller (HVC)...1647
Service Menu—Diagnostics—OBD Tool—Six-Wheel Drive (6WD) Controller (HWD)...1653
Main Menu—Diagnostics—OBD Tool—Modular Telematics Gateway (MTG)...1660
Main Menu—Diagnostics—OBD Tool—JDLink™ 2 (JL2) Control Unit...1672
Service Menu—Diagnostics—OBD Tool—Transmission Control Unit (TCU)...1684
Service Menu—Diagnostics—OBD Tool—Vehicle Control Unit (VCU)...1694
Service Menu—Machine Setup—Tire Size...1704
Main Menu—Machine Setting—Auto Low Idle...1705
Service Menu—Machine Setup—Auto Shutdown...1706
Service Menu—Exhaust Filter—Service Cleaning...1707
Group 17: Diagnostic Test Box...1328
Setup and Functional Test...1717
Two Wire Sensor Circuit Check—Out of Range High...1726
Two Wire Sensor Circuit Check—Out of Range Low...1728
Three Wire Sensor Circuit Check—Out of Range High...1730
Three Wire Sensor Circuit Check—Out of Range Low...1732
Group 20: Adjustments...1328
Transmission Control Unit (TCU) Calibration...1737
Six-Wheel Drive (6WD) Controller Calibration—If Equipped...1740
Six-Wheel Drive (6WD) Motor Incomplete Calibration Test...1743
CAN Circuit Testing...1747
Lower Windshield Wiper Proximity Switch Adjustment and Installation...1753
Articulation Sensor Linkage Adjustment (Rear Steer)...1755
Electrohydraulic Valve Calibration Procedure...1756
Articulation Sensor Calibration Procedure...1759
Steering Angle Sensor Calibration Procedure...1760
Group 25: Tests...1328
Electrical Component Specifications...1768
Component Exchange Diagnostic Test...1775
Alternator Test...1777
Output Shaft Speed Sensor Test...1781
Inching Pedal Module Test...1782
Accelerator Pedal Sensor Test...1786
Hydraulic Pump Pressure Sensor Test...1788
Hydraulic Fan Speed Sensor Test...1791
Switch Test...1794
Wiper Motor Test...1799
Electrical Component Checks...1801
Connector Terminal Test...1807
Section 9016: Six-Wheel Drive (6WD)...1810
Group 05: Theory of Operation...1810
Six-Wheel Drive (6WD) System Operation...1814
6WD Pump and Displacement Control Operation...1816
Six-Wheel Drive (6WD) Forward Operation...1817
Six-Wheel Drive (6WD) Pump Operation...1820
Six-Wheel Drive (6WD) Charge Circuit Operation...1822
Flushing Valve and Charge Pressure Regulating Valve Operation...1824
Six-Wheel Drive (6WD) Circuit Relief and Make-Up Valve Operation...1826
Six-Wheel Drive (6WD) Engagement Manifold Operation...1829
Six-Wheel Drive (6WD) Motor Operation...1831
6WD Wheel Operation...1833
6WD Precision Mode Operation...1835
6WD Inching Mode Operation...1837
Group 10: System Diagrams...1810
Six-Wheel Drive (6WD) System Schematic...1840
Six-Wheel Drive (6WD) System Component Location...1842
Group 15: Diagnostic Information...1810
No Front Wheel Motion (Both Wheels)...1810
No Front Wheel Motion During Inching Operation (Both Wheels)...1810
No Front Wheel Motion (One Wheel)...1810
Intermittent or Erratic Six-Wheel Drive (6WD) Operation...1810
Six-Wheel Drive (6WD) Charge Pressure Indicator Light On...1810
Hydraulic Oil Temperature Indicator Light On...1810
Six-Wheel Drive (6WD) System Oil Temperature Too Hot (6WD Oil Temperature Indicator On)...1810
Low Torque (One Wheel)...1810
Low Torque (Both Wheels)...1810
Front Wheel Operates in Either Low or High Speed Only...1810
Six-Wheel Drive (6WD) Front Wheel Motor Always Runs...1810
Front Wheel Drags...1810
Operates in One Direction Only...1810
Wheels Rotate Opposite Each Other...1810
Group 20: Adjustments...1811
6WD Start-Up Procedure...1891
Six-Wheel Drive (6WD) Pump Control Neutral Adjustment...1893
Group 25: Tests...1811
Six-Wheel Drive (6WD) Oil Warm-Up Procedure...1898
Six-Wheel Drive (6WD) Planetary Brake Leakage Test...1899
Six-Wheel Drive (6WD) Neutral Charge Pressure Test...1902
Six-Wheel Drive (6WD) Charge Pressure Regulating Valve Test...1906
Six-Wheel Drive (6WD) Neutral Charge Pressure Balance Test...1911
Six-Wheel Drive (6WD) Motor Leakage Test...1914
Six-Wheel Drive (6WD) Circuit Relief and Make-Up Valve Test...1919
Six-Wheel Drive (6WD) Charge Pump Flow Test...1924
Six-Wheel Drive (6WD) Engagement Solenoid Valve Test...1926
Six-Wheel Drive (6WD) Hydraulic Oil Cooler Bypass Valve Pressure Test...1928
Section 9020: Power Train...1932
Group 05: Theory of Operation...1932
DF180 Powershift Transmission Operation...1936
Differential Lock Operation...1938
Internal Park Brake Operation...1941
Rear Axle and Tandem Operation...1943
Group 10: System Diagrams...1932
Power Train Schematic...1945
Power Train Component Location...1946
Group 15: Diagnostic Information...1932
Transmission Overfills With Oil...1932
Transmission Slippage...1932
Machine “Jumps” When Inching Pedal Engaged...1932
Machine Lacks Power Or Moves Slow...1932
Transmission Shifts Too Slow (Machine Stops When Changing Gears Under Load)...1932
Transmission Shifts Too Quickly...1932
Machine Will Not Move In Any Gear and Park Brake Indicator Light Is On (No Load Put On Engine When Shifted Into Gear)...1932
Machine Will Not Move (Load Put On Engine Or Engine Stalls When Shifted Into Gear)...1932
Low Pressure In Different Gears Using Same Proportional Solenoid Valve...1932
Machine Creeps In Neutral (Load Put On Engine When Service Brakes Are Applied)...1932
Machine Creeps In Gear With Inching Pedal Fully Depressed...1932
Transmission System Overheats...1932
Transmission Control Lever Does Not Move Freely...1932
Excessive Transmission Noise (Under Load or No Load)...1932
Transmission Engages In a Gear, but Not Gear Selected...1932
Transmission Fails To Change Gear From First Gear Selected...1932
Transmission Faults To Neutral...1932
Excessive Machine Vibration...1932
Erratic Transmission Oil Pressure...1932
Excessive Oil Pressure...1932
Low Oil Pressure In All Gears...1932
Low Pressure In One Gear But Correct In Other Gears...1932
Transmission Breather Oil Leakage...1933
Filter Or Filter Oil Lines Blow Out...1933
Low Lube Pressure In Some Gears But Correct In Other Gears...1933
Excessive Lube Pressure In Some Gears But Correct In Other Gears...1933
Low Transmission Cooler Inlet Pressure And Lube Pressure...1933
Park Brake Engages While Vehicle Is Moving...1933
Park Brake Will Not Release...1933
Park Brake Will Not Hold...1933
Park Brake Overheats...1933
Park Brake Noisy...1933
No Differential Lock Operation...1938
Differential Lock Slippage...1933
Excessive Differential and/or Axle Noise...1933
Group 25: Tests...1933
Differential Oil Warm-Up Procedure...2002
Differential Lock Valve Pressure Test...2004
Differential Lock Charge Pump Flow Test...2006
Differential Oil Cooler Differential Pressure Test...2008
Differential Oil Cooler Bypass Valve Pressure Test...2012
Transmission Oil Cooler Differential Pressure Test...2014
Park Brake Release Pressure Test...2018
Section 9025: Hydraulic System...2019
Group 05: Theory of Operation...2019
Hydraulic System Operation...2024
Hydraulic Pump Operation...2026
Hydraulic Fan Pump Operation...2029
Hydraulic System Manifold Operation...2032
Control Valve Operation—Standard Controls...2034
Control Valve Operation—EH Controls...2038
Hydraulic Oil Filter Operation...2042
System Relief Valve Operation...2044
Circuit Relief Valve Operation...2045
Service Brake Valve Operation...2046
Service Brake Accumulator Operation...2048
Hydraulic Fan Drive Operation...2050
Steering System Operation...2054
Steering System Operation—EH Controls...2056
Load Sense Operation With All Functions in Neutral...2058
Load Sense Operation With One Function Activated...2060
Load Sense Operation With Multiple Functions Activated...2062
Wheel Lean, Articulation, Circle Side Shift, Blade Pitch, and Blade Side Shift Valve Operation...2065
Circle Rotate Valve Operation...2067
Saddle Locking Pin Valve Operation...2069
Blade Lift and Auxiliary Valve Operation...2071
Blade Impact Absorption System Operation...2074
Circle Drive Gearbox Operation-Without Slip Clutch...2077
Circle Drive Gearbox Operation-With Slip Clutch...2079
Dual Input Circle Drive Gearbox Operation—If Equipped...2082
Dual Input Circle Drive Gearbox (With Slip Clutch) Operation—If Equipped...2084
Group 10: System Diagrams...2019
Hydraulic System Schematic Master Legend...2090
Hydraulic System Schematic...2094
Hydraulic System Schematic Master Legend—EH Controls...2099
Hydraulic System Schematic—EH Controls...2104
Hydraulic System Component Location...2110
Hydraulic System Component Location—EH Controls...2116
Group 15: Diagnostic Information...2020
No Hydraulics...2020
Hydraulic System Overheats...2020
Slow Hydraulic Functions...2020
Hydraulic Function (or Pump) Makes “Chattering” Noise...2020
Pump Appears To Be Stuck At Minimum Displacement...2020
Pump Appears To Be Stuck At Maximum Displacement...2020
Function Moves Too Fast...2020
Function Drifts Down...2020
Excessive Effort to Move Function Control Lever...2020
Individual Function Is Slow (Cycle Time Checked Slow)...2020
Slow or Hard Steering...2020
No Steering...2020
Erratic Steering...2020
Excessive Steering Wheel Turns to Steer Machine...2020
Wheels Move After Steering Wheel Stopped...2020
Excessive Vibration of Steering Wheel...2020
Steering Wheel Kickback...2020
Poor or No Brakes (Steering and Hydraulic System Operation Normal)...2020
Aggressive Brakes or Brakes Lock Up...2020
Brakes Drag...2020
Brakes Chatter or Noisy...2020
Delay in Braking...2020
Hydraulic Fan Does Not Reach Full Speed...2020
Hydraulic Fan Runs At Full Speed Only...2020
Hydraulic Fan Does Not Spin...2020
Hydraulic Fan Will Not Reverse Direction...2020
Group 25: Tests...2020
JT02156A Digital Pressure and Temperature Analyzer Kit Installation...2186
Hydraulic Oil Warm-Up Procedure...2187
Vacuum Pump Installation...2188
Hydraulic Pump Standby Pressure and Load Sense Standby Pressure Test...2189
Load Sense Relief Valve Load Sense Relief Valve & Pump Relief Test{pgNO}2021 Pump Relief Test...2193
System Relief Valve Pressure Test...2197
Load Sense Shuttle Valve Isolation Test—Standard Controls...2201
Load Sense Shuttle Valve Isolation Test—EH Controls...2208
Hydraulic Pump Leakage Test...2218
Hydraulic Pump Flow Test...2221
Hydraulic Oil Cooler Differential Pressure Test...2224
Service Brake Valve Pressure Test...2229
Service Brake Accumulator Precharge Test...2232
Service Brake Pressure Switch Test...2235
Service Brake Valve Leakage Test...2238
Hydraulic Cylinder Drift Test...2240
Hydraulic Cylinder Leakage Test...2242
Rotary Manifold Leakage Test...2245
Steering System Leakage Test...2249
Service Brake Accumulator Inlet Check Valve Leakage Test...2255
Blade Impact Absorption Accumulator Charge Pressure Test...2258
Blade Impact Absorption Accumulator Hydraulic Discharge Procedure...2261
Secondary Steering Accumulator Charge Pressure Test...2263
Blade Lift Relief Valve Test...2266
Circuit Relief Valve Test—Midmount Scarifier...2269
Saddle Locking Cylinder Pressure Reducing Valve Test...2271
Hydraulic Fan Pump Flow Test...2274
Hydraulic Fan Pump Case Drain Test...2277
Hydraulic Fan Motor Speed Test...2280
Hydraulic Fan Pump Control Test and Adjustment...2283
Hydraulic Fan Motor Case Drain Test...2287
Four-Wheel Drive (4WD) Hydraulic Oil Cooler Bypass Valve Pressure Test...2289
Section 9031: Heating and Air Conditioning...2293
Group 05: Theory of Operation...2293
Air Conditioning System Cycle of Operation...2296
Group 10: System Diagrams...2293
Air Conditioner and Heater Component Location...2300
Group 15: Diagnostic Information...2293
Diagnose Air Conditioning System Malfunctions...2303
Air Conditioning System Does Not Operate...2293
Air Conditioner Does Not Cool Interior of Cab...2293
Air Conditioner Runs Constantly, Too Cold...2293
Diagnose Heater System Malfunctions...2314
Heater System Does Not Operate...2293
Heater Does Not Warm Interior of Cab...2293
Interior Windows Continue to Fog...2293
Group 25: Tests...2293
R134a Refrigerant Cautions and Proper Handling...2326
Heater and Air Conditioner Operational Checks...2327
Operating Pressure Diagnostic Chart...2330
Air Conditioner Compressor Clutch Test...2332
Air Conditioner High/Low-Pressure Switch Test...2333
R134a Refrigerant Leak Test...2336
R134a Oil Charge Capacity...2337
R134a Refrigerant Charge Capacity...2338
Air Conditioner Freeze Control Switch Test...2339
Heater Blower Switch Test...2341
Heater Blower Resistor Test...2342
Heater Blower Motor Test...2344
R134a Air Conditioning System Test...2345
John Deere 770G, 770GP, 772G, and 772GP Motor Graders Diagnosis and Tests Service Technical Manual (TM14070X19)
