John Deere 770G, 770GP, 772G, and 772GP Motor Graders Diagnosis and Tests Service Technical Manual (TM14244X19)
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.
TM14244X19 - John Deere 770G, 770GP, 772G, and 772GP Motor Graders Technical Manual.pdf
tm14244x63 - John Deere Motoniveladoras 770G, 770GP, 772G y 772GP.pdf
tm14244x054 - John Deere Motoniveladoras 770G, 770GP, 772G e 772GP.pdf
tm14244x28 - John Deere Niveleuses automotrices 770G, 770GP, 772G et 772GP.pdf
PRODUCT DETAILS:
Total Pages: 2,422 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: Spanish English French Portuguese
Category: Operation and Test
Models: John Deere - 770G Motor Grader - 1DW770G_ _ _ L700954—
John Deere - 770G Motor Grader - 1DW770G_ _ _F680878 - etc.
TABLE OF CONTENTS...1
Section 9000: General Information...42
Group 01: Safety...42
Information for European Union Directives and Eurasian Economic Union Technical Regulations Compliance...49
Recognize Safety Information...54
Follow Safety Instructions...55
Operate Only If Qualified...56
Wear Protective Equipment...57
Protect Against Noise...58
Avoid Unauthorized Machine Modifications...59
Inspect Machine...60
Stay Clear of Moving Parts...61
Avoid High-Pressure Fluids...62
Avoid High-Pressure Oils...63
Work In Ventilated Area...64
Avoid Static Electricity Risk When Refueling...65
High Debris Applications...67
Prevent Fires...68
In Case of Machine Fire...69
Prevent Battery Explosions...70
Handle Chemical Products Safely...71
Handle Starting Fluid Safely...72
Decommissioning — Proper Recycling and Disposal of Fluids and Components...73
Exhaust Filter Ash Handling and Disposal...74
Prepare for Emergencies...75
Clean Debris from Machine...76
Use Steps and Handholds Correctly...77
Start Only From Operator's Seat...78
Use and Maintain Seat Belt...79
Prevent Unintended Machine Movement...80
Avoid Work Site Hazards...82
Keep Riders Off Machine...84
Avoid Backover Accidents...85
Avoid Machine Tip Over and Machine Damage...86
Operating or Traveling On Public Roads...87
Inspect and Maintain ROPS...88
Operating in Water and Mud...89
Travel Safely...90
Prevent Acid Burns...91
Add and Operate Attachments Safely...93
Park And Prepare For Service Safely...94
Service Machines Safely...95
Clean Exhaust Filter Safely...96
Service Cooling System Safely...99
Service Accumulator Systems Safely...100
Remove Paint Before Welding or Heating...101
Make Welding Repairs Safely...102
Drive Metal Pins Safely...103
Service Tires Safely...104
Use Proper Lifting Equipment...105
Section 9001: Diagnostics...106
Group 10: Transmission Control Unit (TCU) Diagnostic Trouble Codes...128
Transmission Control Unit (TCU) Diagnostic Trouble Codes...128
000070.03 - Park Brake Pressure Switch Circuit Fault...106
000070.04 - Park Brake Pressure Switch Circuit Fault...106
000177.00 - Transmission Oil Temperature High...106
000177.03 - Transmission Oil Temperature Sensor Circuit Fault...106
000177.04 - Transmission Oil Temperature Sensor Circuit Fault...106
000177.16 - Transmission Oil Temperature High...106
000237.02 - Invalid VIN...106
000237.13 - VIN Options Not Learned...106
000237.14 - VIN Options Not Learned...106
000237.31 - VIN Message Missing...106
000444.03 - Unswitched Battery Voltage...106
000444.04 - Unswitched Battery Voltage...106
000525.02 - Undefined Gear...106
000525.07 - Undefined Gear...106
000525.12 - Undefined Gear...106
000578.00 - Rear Axle Oil Temperature High...106
000578.03 - Rear Axle Oil Temp Sensor Short to Power...106
000578.04 - Rear Axle Oil Temp Sensor Short to Ground...106
000619.05 - Transmission Park Circuit Fault...106
000619.06 - Transmission Park Circuit Fault...106
000619.07 - Park Fault...106
000619.31 - Park Fault...106
000628.12 - Control Unit Programming...106
001231.12 - Communication System Message Missing...106
001231.14 - Communication System Message Fault...106
002000.02 - Communication System Fault...106
002000.09 - Communication System Message Missing...106
002003.09 - Communication System Message Missing...106
002033.02 - Communication System Fault...106
002033.09 - Communication System Message Missing...106
002034.09 - Communication System Message Missing...107
002141.09 - Communication System Message Missing...107
002161.02 - Communication System Message Missing...107
002161.09 - Communication System Message Missing...107
002213.02 - Communication System Message Missing...107
002213.09 - Communication System Message Missing...107
002225.02 - Communication System Message Missing...107
002225.09 - Communication System Message Missing...107
002833.07 - Movement While Park Brake Applied...107
002833.31 - Park Fault...107
003510.03 - TCU Sensor Supply #2...107
003510.04 - TCU Sensor Supply #2...107
003511.03 - TCU Sensor Supply #3...107
003511.04 - TCU Sensor Supply #3...107
516321.03 - Switched Battery Voltage...107
516321.04 - Switched Battery Voltage...107
516755.05 - Transmission Rev Circuit Fault...107
516755.06 - Transmission Rev Circuit Fault...107
516770.05 - Transmission Left Rev Lamp Circuit Fault...107
516770.06 - Transmission Left Rev Lamp Circuit Fault...107
516773.05 - Transmission Right Rev Lamp Circuit Fault...107
516773.06 - Transmission Right Rev Lamp Circuit Fault...107
517056.12 - End of Line File - EOL...107
517056.31 - End of Line File - EOL...107
521601.12 - End of Line File - EOL...107
521601.31 - End of Line File - EOL...107
522087.07 - Park Fault...107
522087.12 - Park Fault...107
522087.31 - Park Fault...107
522252.00 - Clutch 1 Hold Pressure Too High...107
522252.01 - Clutch 1 Hold Pressure Too Low...107
522253.00 - Clutch 2 Hold Pressure Too High...107
522253.01 - Clutch 2 Hold Pressure Too Low...107
522254.00 - Clutch 3 Hold Pressure Too High...108
522254.01 - Clutch 3 Hold Pressure Too Low...108
522255.00 - Clutch 4 Hold Pressure Too High...108
522255.01 - Clutch 4 Hold Pressure Too Low...108
522256.00 - Clutch A Hold Pressure Too High...108
522256.01 - Clutch A Hold Pressure Too Low...108
522257.00 - Clutch B Hold Pressure Too High...108
522257.01 - Clutch B Hold Pressure Too Low...108
522258.00 - Clutch C Hold Pressure Too High...108
522258.01 - Clutch C Hold Pressure Too Low...108
522259.00 - Clutch D Hold Pressure Too High...108
522259.01 - Clutch D Hold Pressure Too Low...108
522414.00 - Transmission Clutch Temperature Fault...108
522414.03 - Transmission Clutch D Solenoid Circuit Fault...108
522414.05 - Transmission Clutch D Solenoid Circuit Fault...108
522414.06 - Transmission Clutch D Solenoid Circuit Fault...108
522507.14 - Transmission Calibration Fault...108
522517.31 - Engine Stall Prevention Active...108
523438.31 - End of Line File - EOL...108
523655.03 - Forward and Reverse Both Active...108
523697.03 - Inching Pedal Circuit Fault...108
523697.04 - Inching Pedal Circuit Fault...108
523697.31 - Inching Pedal System Fault...108
523699.31 - Transmission Speed Clutch Slipping...108
523700.31 - Transmission Clutch Slipping...108
523708.03 - Inching Pedal Circuit Fault...108
523708.04 - Inching Pedal Circuit Fault...108
523708.31 - Inching Pedal Circuit Fault...108
523712.31 - Transmission Calibration Fault...108
523717.31 - Transmission Calibration Fault...108
523718.31 - Transmission Calibration Fault...108
523720.00 - Clutch Fill Time Too Long...108
523720.01 - Clutch Fill Time Too Short...108
523721.00 - Clutch Fill Time Too Long...109
523721.01 - Clutch Fill Time Too Short...109
523722.00 - Clutch Fill Time Too Long...109
523722.01 - Clutch Fill Time Too Short...109
523723.00 - Clutch Fill Time Too Long...109
523723.01 - Clutch Fill Time Too Short...109
523724.00 - Clutch Fill Time Too Long...109
523724.01 - Clutch Fill Time Too Short...109
523725.00 - Clutch Fill Time Too Long...109
523725.01 - Clutch Fill Time Too Short...109
523726.00 - Clutch Fill Time Too Long...109
523726.01 - Clutch Fill Time Too Short...109
523727.00 - Clutch Fill Time Too Long...109
523727.01 - Clutch Fill Time Too Short...109
523728.31 - Transmission Calibration Fault...109
523729.31 - Transmission Calibration Fault...109
523730.31 - Transmission Calibration Fault...109
523731.31 - Transmission Calibration Fault...109
523732.31 - Transmission Calibration Fault...109
523733.31 - Transmission Calibration Fault...109
523734.31 - Transmission Calibration Fault...109
523761.00 - Transmission Clutch Temperature Fault...109
523761.03 - Transmission Clutch Circuit Fault...109
523761.05 - Transmission Clutch Circuit Fault...109
523761.06 - Transmission Clutch Circuit Fault...109
523762.00 - Transmission Clutch Temperature Fault...109
523762.03 - Transmission Clutch Circuit Fault...109
523762.05 - Transmission Clutch Circuit Fault...109
523762.06 - Transmission Clutch Circuit Fault...109
523763.00 - Transmission Clutch Temperature Fault...109
523763.03 - Transmission Clutch Circuit Fault...109
523763.05 - Transmission Clutch Circuit Fault...109
523763.06 - Transmission Clutch Circuit Fault...109
523764.00 - Transmission Clutch Temperature Fault...110
523764.03 - Transmission Clutch Circuit Fault...110
523764.05 - Transmission Clutch Circuit Fault...110
523764.06 - Transmission Clutch Circuit Fault...110
524173.00 - Inching Pedal Circuit Fault...110
524173.01 - Inching Pedal Circuit Fault...110
524173.03 - Inching Pedal Circuit Fault...110
524173.04 - Inching Pedal Circuit Fault...110
524173.12 - Inching Pedal System Fault...110
524173.31 - Inching Pedal Circuit Fault...110
524271.00 - Transmission Clutch Temperature Fault...110
524271.03 - Transmission Clutch Circuit Fault...110
524271.05 - Transmission Clutch Circuit Fault...110
524271.06 - Transmission Clutch Circuit Fault...110
524272.00 - Transmission Clutch Temperature Fault...110
524272.03 - Transmission Clutch Circuit Fault...110
524272.05 - Transmission Clutch Circuit Fault...110
524272.06 - Transmission Clutch Circuit Fault...110
524273.00 - Transmission Clutch Temperature Fault...110
524273.03 - Transmission Clutch Circuit Fault...110
524273.05 - Transmission Clutch Circuit Fault...110
524273.06 - Transmission Clutch Circuit Fault...110
Group 20: Engine Control Unit (ECU) Diagnostic Trouble Codes...389
Engine Control Unit (ECU) Diagnostic Trouble Codes...389
000029.03 - Decel Pedal Short to Power...110
000091.03 - Accel Pedal Short to Power...110
000091.04 - Accel Pedal Open or Short...110
000111.01 - Coolant Level Extremely Low...110
000111.18 - Coolant Level Very Low...110
000237.02 - Vehicle Identification Conflict...110
000237.13 - Vehicle Identification Fault...110
000237.31 - Communication Fault...110
001321.05 - Starter Relay Open Circuit...110
001321.06 - Starter Relay High Current...111
001321.16 - Too Long to Start...111
001321.31 - Starter Sol Open Circuit...111
001761.01 - Diesel Exhaust Fluid is Extremely Low...111
001761.18 - Diesel Exhaust Fluid is Very Low...111
002003.09 - CAN Comm Lost for TCU...111
002033.09 - CAN Comm Lost for VCU...111
003031.12 - Diesel Exhaust Fluid Temperature Sensor Fault...111
003353.31 - Alternator Output Fault...111
003354.31 - Sensor Supply 3 Circuit Fault...111
003516.01 - Diesel Exhaust Fluid Concentration Extremely Low...111
003516.07 - Diesel Exhaust Fluid Concentration Invalid...111
003516.09 - Diesel Exhaust Fluid Tank Header Communication Fault...111
003516.12 - Diesel Exhaust Fluid Concentration Sensor Fault...111
003517.07 - Diesel Exhaust Fluid Tank Level Sensor Invalid...111
003517.12 - Diesel Exhaust Fluid Tank Level Sensor Fault...111
003587.06 - Ether Starting Aid Circuit Fault...111
004366.05 - DEF Tank Heater Coolant Control Valve Circuit Has High Resistance...111
004366.06 - DEF Tank Heater Coolant Control Valve Circuit Has Low Resistance...111
004366.16 - DEF Tank Temperature Moderately High...111
004366.18 - DEF Tank Insufficient Heating Fault...111
005004.06 - Softstart Solenoid Current High...111
516434.01 - Emergency Override Usage Time Expired...111
516434.14 - Emergency Override Enabled and Deactivated...111
516434.31 - Emergency Override Enabled and Active...111
516435.14 - Emergency Override Enabled Time Expired...111
524225.31 - Start Signal Missing...111
Group 30: Primay Display Unit (PDU) Diagnostic Trouble Codes...111
Primary Display Unit (PDU) Diagnostic Trouble Codes...456
000237.02 - Vehicle Identification Number...111
000237.13 - Vehicle Identification Number...111
000237.31 - Vehicle Identification Number...111
000629.12 - Control Unit Fault...111
000920.03 - Audible Alarm Circuit Fault...112
000920.04 - Audible Alarm Circuit Fault...112
002000.09 - Communication System Fault...112
002084.09 - Communication System Message Missing...112
516628.10 - Display Button - UP...112
516629.10 - Display Button - DOWN...112
516630.10 - Display Button - SELECT...112
517057.12 - EE Vehicle Hours Checksum Failure...112
517170.10 - Display Button - LEFT...112
517171.10 - Display Button - RIGHT...112
520760.02 - Camera Signal...112
521859.10 - Display Button - MENU...112
524050.12 - Real Time Clock...112
Group 40: Vehicle Control Unit (VCU) Diagnostic Trouble Codes...477
Vehicle Control Unit (VCU) Diagnostic Trouble Codes...477
000096.03 - Fuel Level Sensor Circuit Fault...112
000096.04 - Fuel Level Sensor Circuit Fault...112
000117.01 - Service Brake Pressure Low...112
000117.03 - Service Brake Accumulator Switch Circuit Fault...112
000117.04 - Service Brake Accumulator Switch Circuit Fault...112
000167.03 - Switched Power Circuit Fault...112
000167.04 - Switched Power Circuit Fault...112
000168.03 - Unswitched Power Circuit Fault...112
000168.04 - Unswitched Power Circuit Fault...112
000237.02 - Vehicle Identification Fault...112
000237.13 - Vehicle Identification Fault...112
000237.31 - Vehicle Identification Fault...112
000583.03 - Mainfall Sensor Circuit Fault (S.N. —693168)...112
000583.04 - Mainfall Sensor Circuit Fault (S.N. —693168)...112
000628.12 - Control Unit Programming...112
000629.12 - Control Unit Fault...112
000639.12 - Communication System Message Missing...112
000639.14 - Communication System Fault...112
000746.03 - Differential Lock Solenoid Circuit Fault...113
000746.05 - Differential Lock Solenoid Circuit Fault...113
000746.06 - Differential Lock Solenoid Circuit Fault...113
000876.03 - A/C Compressor Clutch Circuit Fault...113
000876.05 - A/C Compressor Clutch Circuit Fault...113
000876.06 - A/C Compressor Clutch Circuit Fault...113
000880.03 - Stop Lamp Circuit (Red) Fault...113
000880.05 - Stop Lamp Circuit (Red) Fault...113
000880.06 - Stop Lamp Circuit (Red) Fault...113
000977.03 - Reversing Fan Solenoid Circuit Fault...113
000977.05 - Reversing Fan Solenoid Circuit Fault...113
000977.06 - Reversing Fan Solenoid Circuit Fault...113
000977.07 - Reversing Fan Pressure High...113
001045.04 - Brake Light Switch Circuit Fault...113
001071.03 - Fan Speed Solenoid Circuit Fault...113
001071.04 - Fan Speed Solenoid Circuit Fault...113
001071.05 - Fan Speed Solenoid Circuit Fault...113
001071.06 - Fan Speed Solenoid Circuit Fault...113
001231.12 - Communication System Message Missing...113
001231.14 - Communication System Fault...113
001569.31 - Engine Derated...113
001638.00 - Hydraulic Oil Temperature High...113
001638.03 - Hydraulic Oil Temperature Sensor Circuit Fault...113
001638.04 - Hydraulic Oil Temperature Sensor Circuit Fault...113
001639.00 - Hydraulic Fan Speed High...113
001639.16 - Hydraulic Fan Speed High...113
001639.18 - Hydraulic Fan Speed Low...113
001713.01 - Hydraulic Oil Filter Restricted...113
001713.03 - Hydraulic Oil Filter Restriction Switch Circuit Fault...113
001762.01 - Hydraulic Oil Pressure Low...113
001762.03 - Hydraulic Pressure Sensor Circuit Fault...113
001762.04 - Hydraulic Pressure Sensor Circuit Fault...113
001983.03 - Steering Valve Circuit Fault...113
001983.04 - Steering Valve Circuit Fault...114
001983.05 - Steering Valve Circuit Fault...114
001983.06 - Steering Valve Circuit Fault...114
001984.03 - Steering Valve Circuit Fault...114
001984.04 - Steering Valve Circuit Fault...114
001984.05 - Steering Valve Circuit Fault...114
001984.06 - Steering Valve Circuit Fault...114
002000.09 - Communication System Message Missing...114
002003.09 - Communication System Message Missing...114
002034.09 - Communication System Message Missing...114
002040.09 - Communication System Message Missing...114
002141.09 - Communication System Message Missing...114
002160.09 - Communication System Message Missing...114
002161.09 - Communication System Message Missing...114
002162.09 - Communication System Message Missing...114
002163.09 - Communication System Message Missing...114
002213.09 - Communication System Message Missing...114
002348.03 - Hi Beam Light Circuit Fault...114
002348.05 - Hi Beam Light Circuit Fault...114
002348.06 - Hi Beam Light Circuit Fault...114
002350.03 - Low Beam Light Circuit Fault...114
002350.05 - Low Beam Light Circuit Fault...114
002350.06 - Low Beam Light Circuit Fault...114
002352.06 - Cab Front Work Light Circuit Fault...114
002354.06 - Front Work Light Circuit Fault...114
002356.06 - Front Cab Corner Light Circuit Fault...114
002358.06 - Front Work Light Circuit Fault...114
002362.06 - Rear Cab Corner Light Circuit Fault...114
002366.06 - Right Side Work Light Circuit Fault...114
002367.04 - Left Turn Signal Lights Command Switch Circuit Fault...114
002368.03 - Marker/Tail Light Circuit Fault...114
002368.05 - Marker/Tail Light Circuit Fault...114
002368.06 - Left Turn Light Circuit Fault...114
002369.04 - Right Turn Signal Lights Command Switch Circuit Fault...115
002370.03 - Marker/Tail Light Circuit Fault...115
002370.05 - Marker/Tail Light Circuit Fault...115
002370.06 - Right Turn Light Circuit Fault...115
002378.03 - Marker/Tail Light Circuit Fault...115
002378.05 - Marker/Tail Light Circuit Fault...115
002378.06 - Marker/Tail Light Circuit Fault...115
002642.03 - Left Heated Mirror Circuit Fault...115
002642.05 - Left Heated Mirror Circuit Fault...115
002642.06 - Left Heated Mirror Circuit Fault...115
002682.12 - Left Joystick FNR Invalid Position...115
002689.31 - Left Joystick Button 5 Stuck...115
002690.31 - Left Joystick Button 6 Stuck...115
002874.04 - Hi Beam Switch Circuit Fault...115
003318.03 - Blade Pitch Sensor Circuit Fault (S.N. —693168)...115
003318.04 - Blade Pitch Sensor Circuit Fault (S.N. —693168)...115
003319.03 - Slope Sensor Circuit Fault (S.N. —693168)...115
003319.04 - Slope Sensor Circuit Fault (S.N. —693168)...115
003331.03 - Circle Rotate Sensor Circuit Fault...115
003331.04 - Circle Rotate Sensor Circuit Fault...115
003509.03 - Sensor Supply 1 Circuit Fault...115
003509.04 - Sensor Supply 1 Circuit Fault...115
003510.03 - Sensor Supply 2 Circuit Fault...115
003510.04 - Sensor Supply 2 Circuit Fault...115
003511.03 - Sensor Supply 3 Circuit Fault...115
004026.03 - Right Heated Mirror Circuit Fault...115
004026.05 - Right Heated Mirror Circuit Fault...115
004026.06 - Right Heated Mirror Circuit Fault...115
516688.06 - Left Rear Beacon Light Driver Circuit Fault...115
516689.06 - Right Rear Beacon Light Driver Circuit Fault...115
516690.03 - Engine Compartment Light 1 Circuit Fault...115
516690.06 - Engine Compartment Light 1 Circuit Fault...115
516691.03 - Engine Compartment Light 2 Circuit Fault...115
516691.06 - Engine Compartment Light 2 Circuit Fault...116
520450.03 - Saddle Lock Pin Switch Circuit Fault...116
520911.03 - Engine Compartment Light Switch Circuit Fault...116
520911.04 - Engine Compartment Light Switch Circuit Fault...116
521465.02 - Joystick Mismatch...116
521466.03 - Fan Direction/Relief Actuator Circuit Fault...116
521466.05 - Fan Direction/Relief Actuator Circuit Fault...116
521466.06 - Fan Direction/Relief Actuator Circuit Fault...116
521900.03 - Articulation Angle Sensor Circuit Fault...116
521900.04 - Articulation Angle Sensor Circuit Fault...116
522176.01 - Secondary Steering Active...116
522340.03 - Saddle Lock Solenoid Circuit Fault...116
522340.04 - Saddle Lock Solenoid Circuit Fault...116
522340.05 - Saddle Lock Solenoid Circuit Fault...116
522340.06 - Saddle Lock Solenoid Circuit Fault...116
522343.03 - Rear Window Defrost Relay Circuit Fault...116
522343.05 - Rear Window Defrost Relay Circuit Fault...116
522343.06 - Rear Window Defrost Relay Circuit Fault...116
522375.01 - Transmission Oil Filter Restricted...116
522375.03 - Transmission Oil Filter Restriction Switch Circuit Fault...116
522415.06 - Front Lower Washer Pump Circuit Fault...116
522416.06 - Front Lower Wiper Hi Speed Circuit Fault...116
522418.06 - Front Lower Wiper Low Speed Circuit Fault...116
522433.06 - Rear Wiper Low Speed Circuit Fault...116
522434.06 - Front Wiper Low Speed Circuit Fault...116
522435.06 - Front Wiper Hi Speed Circuit Fault...116
522796.06 - Rear Washer Pump Circuit Fault...116
522797.06 - Front Washer Pump Circuit Fault...116
523688.03 - Steering Angle Sensor Circuit Fault...116
523688.04 - Steering Angle Sensor Circuit Fault...116
523689.04 - Diff Lock Switch Circuit Fault...116
523901.04 - Front Window Switch Circuit Fault...116
524044.01 - Axle Oil Filter Restricted...116
524044.03 - Axle Oil Filter Restriction Switch Circuit Fault...117
Group 50: Hydraulic Valve Controller (HVC) Diagnostic Trouble Codes...757
Hydraulic Valve Controller (HVC) Diagnostic Trouble Codes...757
000237.02 - Vehicle Identification Fault...117
000237.13 - Vehicle Identification Fault...117
000237.31 - Vehicle Identification Fault...117
000628.12 - Control Unit Programming...117
000629.12 - Control Unit Fault...117
000639.12 - Communication System Message Missing...117
000639.14 - Communication System Fault...117
001231.12 - Communication System Message Missing...117
001231.14 - Communication System Fault...117
001503.04 - Left Armrest Position Circuit Fault...117
001503.13 - Left Armrest Position Circuit Fault...117
001565.04 - Left Armrest Down Switch Circuit Fault...117
001566.04 - Right Armrest Down Switch Circuit Fault...117
001899.03 - Circle Side Shift Valve Circuit Fault...117
001899.04 - Circle Side Shift Valve Circuit Fault...117
001899.15 - Circle Side Shift Valve Warm Up Circuit...117
001899.17 - Circle Side Shift Valve Warm Up Circuit...117
001900.03 - Circle Side Shift Valve Circuit Fault...117
001900.04 - Circle Side Shift Valve Circuit Fault...117
001900.15 - Circle Side Shift Valve Warm Up Circuit...117
001900.17 - Circle Side Shift Valve Warm Up Circuit...117
001911.03 - Wheel Lean Valve Circuit Fault...117
001911.04 - Wheel Lean Valve Circuit Fault...117
001911.15 - Wheel Lean Valve Warm Up Circuit Fault...117
001911.17 - Wheel Lean Valve Warm Up Circuit Fault...117
001912.03 - Wheel Lean Valve Circuit Fault...117
001912.04 - Wheel Lean Valve Circuit Fault...117
001912.15 - Wheel Lean Valve Warm Up Circuit Fault...117
001912.17 - Wheel Lean Valve Warm Up Circuit Fault...117
001923.03 - Right Blade Lift Valve Circuit Fault...117
001923.04 - Right Blade Lift Valve Circuit Fault...118
001923.15 - Right Blade Lift Valve Warm Up Circuit Fault...118
001923.17 - Right Blade Lift Valve Warm Up Circuit Fault...118
001924.03 - Right Blade Lift Valve Circuit Fault...118
001924.04 - Right Blade Lift Valve Circuit Fault...118
001924.15 - Right Blade Lift Valve Warm Up Circuit Fault...118
001924.17 - Right Blade Lift Valve Warm Up Circuit Fault...118
001935.03 - Articulation Valve Circuit Fault...118
001935.04 - Articulation Valve Circuit Fault...118
001935.15 - Articulation Valve Warm Up Circuit Fault...118
001935.17 - Articulation Valve Warm Up Circuit Fault...118
001936.03 - Articulation Valve Circuit Fault...118
001936.04 - Articulation Valve Circuit Fault...118
001936.15 - Articulation Valve Warm Up Circuit Fault...118
001936.17 - Articulation Valve Warm Up Circuit Fault...118
001947.03 - Circle Rotate Valve Circuit Fault...118
001947.04 - Circle Rotate Valve Circuit Fault...118
001947.15 - Circle Rotate Valve Warm Up Circuit Fault...118
001947.17 - Circle Rotate Valve Warm Up Circuit Fault...118
001948.03 - Circle Rotate Valve Circuit Fault...118
001948.04 - Circle Rotate Valve Circuit Fault...118
001948.15 - Circle Rotate Valve Warm Up Circuit Fault...118
001948.17 - Circle Rotate Valve Warm Up Circuit Fault...118
001959.03 - Blade Side Shift Valve Circuit Fault...118
001959.04 - Blade Side Shift Valve Circuit Fault...118
001959.15 - Blade Side Shift Valve Warm Up Circuit...118
001959.17 - Blade Side Shift Valve Warm Up Circuit...118
001960.03 - Blade Side Shift Valve Circuit Fault...118
001960.04 - Blade Side Shift Valve Circuit Fault...118
001960.15 - Blade Side Shift Valve Warm Up Circuit Fault...118
001960.17 - Blade Side Shift Valve Warm Up Circuit Fault...118
001971.03 - Left Blade Lift Valve Circuit Fault...118
001971.04 - Left Blade Lift Valve Circuit Fault...118
001971.15 - Left Blade Lift Valve Warm Up Circuit Fault...119
001971.17 - Left Blade Lift Valve Warm Up Circuit Fault...119
001972.03 - Left Blade Lift Valve Circuit Fault...119
001972.04 - Left Blade Lift Valve Circuit Fault...119
001972.15 - Left Blade Lift Valve Warm Up Circuit Fault...119
001972.17 - Left Blade Lift Valve Warm Up Circuit Fault...119
002000.09 - Communication System Message Missing...119
002003.09 - Communication System Message Missing...119
002033.09 - Communication System Message Missing...119
002034.09 - Communication System Message Missing...119
002040.09 - Communication System Message Missing...119
002160.09 - Communication System Message Missing...119
002161.09 - Communication System Message Missing...119
002162.09 - Communication System Message Missing...119
002163.09 - Communication System Message Missing...119
002170.09 - Communication System Message Missing...119
002171.09 - Communication System Message Missing...119
002172.09 - Communication System Message Missing...119
002173.09 - Communication System Message Missing...119
002174.09 - Communication System Message Missing...119
002226.09 - Communication System Message Missing...119
005493.04 - Right Armrest Position Circuit Fault...119
005493.13 - Right Armrest Position Circuit Fault...119
520752.04 - Return to Straight Switch 1 Circuit Fault...119
520753.04 - Return to Straight Switch 2 Circuit Fault...119
520754.04 - Return to Straight Switch 3 Circuit Fault...119
520755.04 - Return to Straight Switch 4 Circuit Fault...119
521900.10 - Articulation Angle Sensor Fault...119
523849.13 - Return to Straight Module Circuit Fault...119
Group 60: Auxiliary Valve Controller (AVC) Diagnostic Trouble Codes...918
Auxiliary Valve Controller (AVC) Diagnostic Trouble Codes...918
000237.02 - Vehicle Identification Fault...119
000237.13 - Vehicle Identification Fault...119
000237.31 - Vehicle Identification Fault...120
000628.12 - Control Unit Programing...120
000629.12 - Control Unit Fault...120
000639.12 - Communication System Message Missing...120
000639.14 - Communication System Fault...120
Section 9005: Operational Checkout Procedure...1252
Group 10: Operational Checkout Procedure...1252
Operational Checkout...1295
Section 9010: Engine...1337
Group 05: Theory of Operation...1337
John Deere Engine Theory of Operation...1339
Exhaust Aftertreatment...1340
Cold Start Aid—If Equipped...1341
Soft Start...1343
Group 10: System Diagrams...1337
Engine Sampling Port Location...1345
Engine Cooling System Component Location...1346
Engine Fuel System Component Location...1347
Engine Intake and Exhaust Component Location...1348
Group 15: Diagnostic Information...1337
John Deere Engine Diagnostic Information...1350
Group 20: Adjustments...1337
John Deere Engine Adjustments...1352
Service Filter Cleaning...1353
Group 25: Tests...1337
John Deere Engine Tests...1355
Fluid Sampling Procedure...1356
Engine Slow and Fast Idle Speed Check...1361
Radiator Temperature Differential Test...1362
Exhaust Emissions Test Point...1364
Section 9015: Electrical System...1366
Group 05: Theory of Operation...1366
Controller Area Network (CAN) Theory of Operation...1378
Start and Charge Circuits Theory of Operation...1384
Park Brake Circuit Theory of Operation...1390
Primary Display Unit (PDU) and Sealed Switch Module (SSM) Circuits Theory of Operation...1392
Engine Control Unit (ECU) Circuit Theory of Operation...1396
Exhaust Aftertreatment Circuit Theory of Operation...1408
Transmission Control Unit (TCU) Circuit Theory of Operation...1416
Hydraulic Valve Controller (HVC) Circuit Theory of Operation...1425
Auxiliary Valve Controller (AVC) Circuit Theory of Operation...1433
Six-Wheel Drive (6WD) Circuit Theory of Operation...1439
Vehicle Control Unit (VCU) Circuit Theory of Operation...1444
Hydraulic Fan Speed and Fan Reversing Circuits Theory of Operation...1453
Differential Lock Circuit Theory of Operation...1458
Saddle Lock Circuit Theory of Operation...1461
Secondary Steering Electric Motor Circuit Theory of Operation—If Equipped...1463
Drive Lights, Marker Lights, Hazards, and Turn Lights Circuits Theory of Operation...1465
Work Lights Circuit Theory of Operation...1469
Brake Lights and Brake Accumulator Pressure Warning Circuit Theory of Operation...1472
Backup Lights Circuit Theory of Operation—If Equipped...1474
Beacon Light Circuit Theory of Operation—If Equipped...1476
Wipers and Washers Circuits Theory of Operation...1478
Rear Window Defog and Heated Side Mirrors Circuits Theory of Operation...1483
Air Conditioner, Heater, and Precleaner Circuits Theory of Operation...1486
JDLink™ Circuit Theory of Operation...1490
Group 10: System Diagrams...1366
Electrical Diagram Information...1496
Electrical Schematic Symbols...1500
Fuse and Relay Specifications...1503
System Functional Schematic, Wiring Diagram, and Component Location Master Legend...1507
System Functional Schematic...1518
Power and Ground Cables Component Location...1526
Power and Ground Cables Wiring Diagram...1527
Front 6WD Harness (W10) Component Location...1530
Front 6WD Harness (W10) Wiring Diagram...1532
Cab Roof Harness (W14) Component Location...1533
Cab Roof Harness (W14) Wiring Diagram...1535
Cab Interior Harness (W15) Component Location—6WD...1537
Cab Interior Harness (W15) Wiring Diagram—6WD...1541
Cab Interior Harness (W16) Component Location—Non 6WD...1557
Cab Interior Harness (W16) Wiring Diagram—Non 6WD...1561
Front Motor Speed Sensor Harnesses (W17 and W18) Component Location—6WD...1575
Front Motor Speed Sensor Harnesses (W17 and W18) Wiring Diagram—6WD...1576
Blade Impact Harness (W19) Component Location—If Equipped...1578
Blade Impact Harness (W19) Wiring Diagram—If Equipped...1579
Drive and Turn Lights Harnesses (W22 and W23) Component Location...1580
Drive and Turn Lights Harnesses (W22 and W23) Wiring Diagram...1581
Steering Angle Sensor Harness (W24) Component Location—6WD...1583
Steering Angle Sensor Harness (W24) Wiring Diagram—6WD...1584
Front Platform Harness (W25) Component Location...1585
Front Platform Harness (W25) Wiring Diagram...1587
Rear Platform Harness (W26) Component Location...1592
Rear Platform Harness (W26) Wiring Diagram...1594
Rear Camera Harness (W27) Component Location—If Equipped...1597
Rear Camera Harness (W27) Wiring Diagram—If Equipped...1598
Front Camera Harness (W28) Component Location—If Equipped...1599
Front Camera Harness (W28) Wiring Diagram—If Equipped...1600
Secondary Steering Electrical Motor Harness (W29) Component Location—If Equipped...1601
Secondary Steering Electrical Motor Harness (W29) Wiring Diagram—If Equipped...1602
Fan Door Harness (W31) Component Location...1603
Fan Door Harness (W31) Wiring Diagram...1604
Heater and Air Conditioner Harness (W32) Component Location...1605
Heater and Air Conditioner Harness (W32) Wiring Diagram...1606
Radio Harness (W33) Component Location...1607
Radio Harness (W33) Wiring Diagram...1609
Midstructure Harness (W34) Component Location...1610
Midstructure Harness (W34) Wiring Diagram...1611
Transmission Harness (W35) Component Location...1612
Transmission Harness (W35) Wiring Diagram...1614
Tilt Console Harness (W36) Component Location...1616
Tilt Console Harness (W36) Wiring Diagram...1618
Electrohydraulic (EH) Main Cab Harness (W38) Component Location...1620
Electrohydraulic (EH) Main Cab Harness (W38) Wiring Diagram...1623
Electrohydraulic (EH) Main Frame Harness (W39) Component Location...1627
Electrohydraulic (EH) Main Frame Harness (W39) Wiring Diagram...1631
Electrohydraulic (EH) Draft Frame Harness (W40) Component Location...1636
Electrohydraulic (EH) Draft Frame Harness (W40) Wiring Diagram...1637
Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Component Location...1641
Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Wiring Diagram...1643
Satellite Radio Harness (W46) Component Location—If Equipped...1645
Satellite Radio Harness (W46) Wiring Diagram—If Equipped...1646
Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Component Location...1647
Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Wiring Diagram...1649
Engine Interface Harness (W50) Component Location...1652
Engine Interface Harness (W50) Wiring Diagram...1653
Engine Harness (W51) Component Location...1654
Engine Harness (W51) Wiring Diagram...1656
Low-Pressure Fuel System Harness (W52) Component Location...1659
Low-Pressure Fuel System Harness (W52) Wiring Diagram...1661
Exhaust Aftertreatment Harness (W53) Component Location...1662
Exhaust Aftertreatment Harness (W53) Wiring Diagram...1663
Diesel Exhaust Fluid (DEF) Harness (W54) Component Location...1664
Diesel Exhaust Fluid (DEF) Harness (W54) Wiring Diagram...1666
Selective Catalytic Reduction (SCR) Harness (W55) Component Location...1667
Selective Catalytic Reduction (SCR) Harness (W55) Wiring Diagram...1669
Taillight Harnesses (W57 and W58) Component Location...1670
Taillight Harnesses (W57 and W58) Wiring Diagram...1672
Auxiliary Radio Input Harness (W59) Component Location—If Equipped...1674
Auxiliary Radio Input Harness (W59) Wiring Diagram—If Equipped...1675
Camera Display Harness (W67) Component Location...1676
Camera Display Harness (W67) Wiring Diagram...1677
Hydraulic Pump Pressure Sensor Harness (W68) Component Location...1679
Hydraulic Pump Pressure Sensor Harness (W68) Wiring Diagram...1680
Drive Light Extension Jumper Harnesses (W75 and W76) Component Location—If Equipped...1681
Drive Light Extension Jumper Harnesses (W75 and W76) Wiring Diagram—If Equipped...1683
Diesel Fired Coolant Heater (DFCH) Harness (W77) Component Location—If Equipped...1685
Diesel Fired Coolant Heater Harness (W77) Wiring Diagram—If Equipped...1686
Blade Lift Cylinder Harnesses (W82 and W83) Component Location...1688
Blade Lift Cylinder Harnesses (W82 and W83) Wiring Diagram...1689
Circle Side Shift Cylinder Harness (W84) Component Location...1692
Circle Side Shift Cylinder Harness (W84) Wiring Diagram...1693
Six-Wheel Drive (6WD) Pump Harness (W90) Component Location...1695
Six-Wheel Drive (6WD) Pump Harness (W90) Wiring Diagram...1696
JDLink™ Harnesses (W6002 and W6003) Component Location—If Equipped...1698
JDLink™ Modular Telematics Gateway (MTG) Harness (W6002) Wiring Diagram—If Equipped...1700
JDLink™ Satellite (SAT) Harness (W6003) Wiring Diagram—If Equipped...1701
Group 15: Diagnostic Information...1369
Electrical Component Specifications...1708
Vehicle Control Unit (VCU) Outputs...1714
Service ADVISOR™ Application...1718
Service ADVISOR™ Connection Procedure...1719
Service ADVISOR™ Remote (SAR) Connection Procedure...1721
Reading Diagnostic Trouble Codes (DTCs) With Service ADVISOR™ Application...1723
Intermittent Diagnostic Trouble Code (DTC) Diagnostics...1726
JDLink™ Connection Procedure—If Equipped...1727
Group 16: Monitor Operation...1369
Primary Display Unit (PDU)—Service Mode...1730
Service Menu—Display Settings—Menu Access...1732
Service Menu—Diagnostics—Codes—Clear Codes...1733
Service Menu—Diagnostics—OBD Tool...1734
Service Menu—Diagnostics—OBD Tool—Auxiliary Valve Controller (AVC)...1736
Service Menu—Diagnostics—OBD Tool—Hydraulic Valve Controller (HVC)...1742
Service Menu—Diagnostics—OBD Tool—Six-Wheel Drive (6WD) Controller (HWD)...1748
Service Menu—Diagnostics—OBD Tool—Transmission Control Unit (TCU)...1755
Service Menu—Diagnostics—OBD Tool—Vehicle Control Unit (VCU)...1765
Service Menu—Machine Setup—Tire Size...1775
Service Menu—Machine Setup—Auto Shutdown...1776
Service Menu—Machine Setup—Auxiliary Valve Controls...1777
Service Menu—Exhaust Filter—Service Cleaning...1778
Group 17: Diagnostic Test Box...1370
Setup and Functional Test...1788
Two Wire Sensor Circuit Check—Out of Range High...1797
Two Wire Sensor Circuit Check—Out of Range Low...1799
Three Wire Sensor Circuit Check—Out of Range High...1801
Three Wire Sensor Circuit Check—Out of Range Low...1803
Group 20: Adjustments...1370
Transmission Control Unit (TCU) Calibration...1808
Six-Wheel Drive (6WD) Controller Calibration—If Equipped...1811
Six-Wheel Drive (6WD) Motor Incomplete Calibration Test...1814
CAN Circuit Testing...1818
Lower Windshield Wiper Proximity Switch Adjustment and Installation...1824
Articulation Sensor Linkage Adjustment (Rear Steer)...1826
Electrohydraulic Valve Calibration Procedure...1827
Articulation Sensor Calibration Procedure...1830
Steering Angle Sensor Calibration Procedure...1831
Blade Lift Cylinder Learning Procedure...1832
Cylinder Offset Calibration Procedure...1837
Set Machine Hours in Primary Display Unit (PDU)...1842
Group 25: Tests...1370
Component Exchange Diagnostic Test...1845
Alternator Test...1847
Output Shaft Speed Sensor Test...1851
Inching Pedal Module Test...1852
Accelerator Pedal Sensor Test...1856
Hydraulic Pump Pressure Sensor Test...1858
Hydraulic Fan Speed Sensor Test...1861
Switch Test...1864
Wiper Motor Test...1869
Electrical Component Checks...1871
Connector Terminal Test...1877
Section 9016: Six-Wheel Drive (6WD)...1880
Group 05: Theory of Operation...1880
Six-Wheel Drive (6WD) System Operation...1884
6WD Pump and Displacement Control Operation...1886
Six-Wheel Drive (6WD) Forward Operation...1887
Six-Wheel Drive (6WD) Pump Operation...1890
Six-Wheel Drive (6WD) Charge Circuit Operation...1892
Flushing Valve and Charge Pressure Regulating Valve Operation...1894
Six-Wheel Drive (6WD) Circuit Relief and Make-Up Valve Operation...1896
Six-Wheel Drive (6WD) Engagement Manifold Operation...1899
Six-Wheel Drive (6WD) Motor Operation...1901
6WD Wheel Operation...1903
6WD Precision Mode Operation...1905
6WD Inching Mode Operation...1907
Group 10: System Diagrams...1880
Six-Wheel Drive (6WD) System Schematic...1910
Six-Wheel Drive (6WD) System Component Location...1912
Group 15: Diagnostic Information...1880
No Front Wheel Motion (Both Wheels)...1880
No Front Wheel Motion During Inching Operation (Both Wheels)...1880
No Front Wheel Motion (One Wheel)...1880
Intermittent or Erratic Six-Wheel Drive (6WD) Operation...1880
Six-Wheel Drive (6WD) Charge Pressure Indicator Light On...1880
Hydraulic Oil Temperature Indicator Light On...1880
Six-Wheel Drive (6WD) System Oil Temperature Too Hot (6WD Oil Temperature Indicator On)...1880
Low Torque (One Wheel)...1880
Low Torque (Both Wheels)...1880
Front Wheel Operates in Either Low or High Speed Only...1880
Six-Wheel Drive (6WD) Front Wheel Motor Always Runs...1880
Front Wheel Drags...1880
Operates in One Direction Only...1880
Wheels Rotate Opposite Each Other...1880
Group 20: Adjustments...1881
6WD Start-Up Procedure...1961
Six-Wheel Drive (6WD) Pump Control Neutral Adjustment...1963
Group 25: Tests...1881
Six-Wheel Drive (6WD) Oil Warm-Up Procedure...1968
Six-Wheel Drive (6WD) Planetary Brake Leakage Test...1969
Six-Wheel Drive (6WD) Neutral Charge Pressure Test...1972
Six-Wheel Drive (6WD) Charge Pressure Regulating Valve Test...1976
Six-Wheel Drive (6WD) Neutral Charge Pressure Balance Test...1981
Six-Wheel Drive (6WD) Motor Leakage Test...1984
Six-Wheel Drive (6WD) Circuit Relief and Make-Up Valve Test...1989
Six-Wheel Drive (6WD) Charge Pump Flow Test...1994
Six-Wheel Drive (6WD) Engagement Solenoid Valve Test...1996
Six-Wheel Drive (6WD) Hydraulic Oil Cooler Bypass Valve Pressure Test...1998
Section 9020: Power Train...2002
Group 05: Theory of Operation...2002
DF180 Powershift Transmission Operation...2006
Differential Lock Operation...2008
Internal Park Brake Operation...2011
Rear Axle and Tandem Operation...2013
Group 10: System Diagrams...2002
Power Train Schematic...2016
Power Train Component Location...2018
Group 15: Diagnostic Information...2002
Transmission Overfills With Oil...2002
Transmission Slippage...2002
Machine “Jumps” When Inching Pedal Engaged...2002
Machine Lacks Power Or Moves Slow...2002
Transmission Shifts Too Slow (Machine Stops When Changing Gears Under Load)...2002
Transmission Shifts Too Quickly...2002
Machine Will Not Move In Any Gear and Park Brake Indicator Light Is On (No Load Put On Engine When Shifted Into Gear)...2002
Machine Will Not Move (Load Put On Engine Or Engine Stalls When Shifted Into Gear)...2002
Low Pressure In Different Gears Using Same Proportional Solenoid Valve...2002
Machine Creeps In Neutral (Load Put On Engine When Service Brakes Are Applied)...2002
Machine Creeps In Gear With Inching Pedal Fully Depressed...2002
Transmission System Overheats...2002
Transmission Control Lever Does Not Move Freely...2002
Excessive Transmission Noise (Under Load or No Load)...2002
Transmission Engages In a Gear, but Not Gear Selected...2002
Transmission Fails To Change Gear From First Gear Selected...2002
Transmission Faults To Neutral...2002
Excessive Machine Vibration...2002
Erratic Transmission Oil Pressure...2002
Excessive Oil Pressure...2002
Low Oil Pressure In All Gears...2002
Low Pressure In One Gear But Correct In Other Gears...2002
Transmission Breather Oil Leakage...2003
Filter Or Filter Oil Lines Blow Out...2003
Low Lube Pressure In Some Gears But Correct In Other Gears...2003
Excessive Lube Pressure In Some Gears But Correct In Other Gears...2003
Low Transmission Cooler Inlet Pressure And Lube Pressure...2003
Park Brake Engages While Vehicle Is Moving...2003
Park Brake Will Not Release...2003
Park Brake Will Not Hold...2003
Park Brake Overheats...2003
Park Brake Noisy...2003
No Differential Lock Operation...2008
Differential Lock Slippage...2003
Excessive Differential and/or Axle Noise...2003
Group 25: Tests...2003
Differential Oil Warm-Up Procedure...2075
Differential Lock Valve Pressure Test...2077
Differential Lock Charge Pump Flow Test...2079
Differential Oil Cooler Differential Pressure Test...2081
Differential Oil Cooler Bypass Valve Pressure Test...2085
Transmission Oil Cooler Differential Pressure Test...2087
Park Brake Release Pressure Test...2091
Section 9025: Hydraulic System...2092
Group 05: Theory of Operation...2092
Hydraulic System Operation...2097
Hydraulic Pump Operation...2099
Hydraulic Fan Pump Operation...2102
Hydraulic System Manifold Operation...2105
Control Valve Operation—Standard Controls...2107
Control Valve Operation—EH Controls...2111
Hydraulic Oil Filter Operation...2115
System Relief Valve Operation...2117
Circuit Relief Valve Operation...2118
Service Brake Valve Operation...2119
Service Brake Accumulator Operation...2121
Hydraulic Fan Drive Operation...2123
Steering System Operation...2127
Steering System Operation—EH Controls...2129
Load Sense Operation With All Functions in Neutral...2131
Load Sense Operation With One Function Activated...2133
Load Sense Operation With Multiple Functions Activated...2135
Wheel Lean, Articulation, Circle Side Shift, Blade Pitch, and Blade Side Shift Valve Operation...2138
Circle Rotate Valve Operation...2140
Saddle Locking Pin Valve Operation...2142
Blade Lift and Auxiliary Valve Operation...2144
Blade Impact Absorption System Operation...2147
Circle Drive Gearbox Operation-Without Slip Clutch...2150
Circle Drive Gearbox Operation-With Slip Clutch...2152
Dual Input Circle Drive Gearbox Operation—If Equipped...2155
Dual Input Circle Drive Gearbox (With Slip Clutch) Operation—If Equipped...2157
Group 10: System Diagrams...2092
Hydraulic Schematic Symbols...2163
Hydraulic System Schematic...2167
Hydraulic System Schematic—EH Controls...2172
Hydraulic System Component Location...2178
Hydraulic System Component Location—EH Controls...2184
Group 15: Diagnostic Information...2093
No Hydraulics...2093
Hydraulic System Overheats...2093
Slow Hydraulic Functions...2093
Hydraulic Function (or Pump) Makes “Chattering” Noise...2093
Pump Appears To Be Stuck At Minimum Displacement...2093
Pump Appears To Be Stuck At Maximum Displacement...2093
Function Moves Too Fast...2093
Function Drifts Down...2093
Excessive Effort to Move Function Control Lever...2093
Individual Function Is Slow (Cycle Time Checked Slow)...2093
Slow or Hard Steering...2093
No Steering...2093
Erratic Steering...2093
Excessive Steering Wheel Turns to Steer Machine...2093
Wheels Move After Steering Wheel Stopped...2093
Excessive Vibration of Steering Wheel...2093
Steering Wheel Kickback...2093
Poor or No Brakes (Steering and Hydraulic System Operation Normal)...2093
Aggressive Brakes or Brakes Lock Up...2093
Brakes Drag...2093
Brakes Chatter or Noisy...2093
Delay in Braking...2093
Hydraulic Fan Does Not Reach Full Speed...2093
Hydraulic Fan Runs At Full Speed Only...2093
Hydraulic Fan Does Not Spin...2093
Hydraulic Fan Will Not Reverse Direction...2093
Group 25: Tests...2093
JT02156A Digital Pressure and Temperature Analyzer Kit Installation...2254
Hydraulic Oil Warm-Up Procedure...2255
Vacuum Pump Installation...2256
Hydraulic Pump Standby Pressure and Load Sense Standby Pressure Test...2257
Load Sense Relief Valve Load Sense Relief Valve & Pump Relief Test{pgNO}2094 Pump Relief Test...2261
System Relief Valve Pressure Test...2265
Load Sense Shuttle Valve Isolation Test—Standard Controls...2269
Load Sense Shuttle Valve Isolation Test—EH Controls...2276
Hydraulic Pump Leakage Test...2286
Hydraulic Pump Flow Test...2289
Hydraulic Oil Cooler Differential Pressure Test...2292
Service Brake Valve Pressure Test...2297
Service Brake Accumulator Precharge Test...2300
Service Brake Pressure Switch Test...2303
Service Brake Valve Leakage Test...2306
Hydraulic Cylinder Drift Test...2308
Hydraulic Cylinder Leakage Test...2310
Rotary Manifold Leakage Test...2313
Steering System Leakage Test...2317
Service Brake Accumulator Inlet Check Valve Leakage Test...2323
Blade Impact Absorption Accumulator Charge Pressure Test...2326
Blade Impact Absorption Accumulator Hydraulic Discharge Procedure...2329
Secondary Steering Accumulator Charge Pressure Test...2331
Blade Lift Relief Valve Test...2334
Circuit Relief Valve Test—Midmount Scarifier...2337
Saddle Locking Cylinder Pressure Reducing Valve Test...2339
Hydraulic Fan Pump Flow Test...2342
Hydraulic Fan Pump Case Drain Test...2345
Hydraulic Fan Motor Speed Test...2348
Hydraulic Fan Pump Control Test and Adjustment...2351
Hydraulic Fan Motor Case Drain Test...2355
Four-Wheel Drive (4WD) Hydraulic Oil Cooler Bypass Valve Pressure Test...2357
Section 9031: Heating and Air Conditioning...2361
Group 05: Theory of Operation...2361
Air Conditioning System Cycle of Operation...2364
Group 10: System Diagrams...2361
Air Conditioner and Heater Component Location...2368
Group 15: Diagnostic Information...2361
Diagnose Air Conditioning System Malfunctions...2371
Air Conditioning System Does Not Operate...2361
Air Conditioner Does Not Cool Interior of Cab...2361
Air Conditioner Runs Constantly, Too Cold...2361
Diagnose Heater System Malfunctions...2382
Heater System Does Not Operate...2361
Heater Does Not Warm Interior of Cab...2361
Interior Windows Continue to Fog...2361
Group 25: Tests...2361
R134a Refrigerant Cautions and Proper Handling...2394
Heater and Air Conditioner Operational Checks...2395
Operating Pressure Diagnostic Chart...2398
Air Conditioner Compressor Clutch Test...2400
Air Conditioner High/Low-Pressure Switch Test...2401
R134a Refrigerant Leak Test...2404
R134a Oil Charge Capacity...2405
R134a Refrigerant Charge Capacity...2406
Air Conditioner Freeze Control Switch Test...2407
Heater Blower Switch Test...2409
Heater Blower Resistor Test...2410
Heater Blower Motor Test...2412
R134a Air Conditioning System Test...2413
John Deere 770G, 770GP, 772G, and 772GP Motor Graders Diagnosis and Tests Service Technical Manual (TM14244X19)
