Complete technical Operation & Test Manual with electrical wiring diagrams for John Deere 670G, 670GP, 672G & 672GP Motor Grader. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

John Deere 670G, 670GP, 672G & 672GP Motor Grader Operation & Test Technical Manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

TM12135 - 670G, 670GP, 672G & 672GP Motor Grader Operation & Test Service Manual.pdf

MAIN SECTIONS
9000 - General Information
9001 - Diagnostic Trouble Codes (DTC)
9005 - Operational Checkout Procedure
9010 - Engine
9015 - Electrical System
9016 - Six Wheel Drive (6WD)
9020 - Power Train
9025 - Hydraulic System
9031 - Heating and Air Conditioning
...

TABLE OF CONTENTS....1
Section 9000: General Information....39
  Group 01: Safety....39
    Recognize Safety Information....42
    Follow Safety Instructions....43
    Operate Only If Qualified....44
    Wear Protective Equipment....45
    Avoid Unauthorized Machine Modifications....46
    Inspect Machine....47
    Stay Clear of Moving Parts....48
    Avoid High-Pressure Fluids....2052
    Avoid High-Pressure Oils....50
    Work In Ventilated Area....51
    Prevent Fires....52
    Prevent Battery Explosions....53
    Handle Chemical Products Safely....54
    Decommissioning — Proper Recycling and Disposal of Fluids and Components....55
    Exhaust Filter Ash Handling and Disposal....56
    Prepare for Emergencies....57
    Clean Debris from Machine....58
    Use Steps and Handholds Correctly....59
    Start Only From Operator's Seat....60
    Use and Maintain Seat Belt....61
    Prevent Unintended Machine Movement....62
    Avoid Work Site Hazards....64
    Keep Riders Off Machine....66
    Avoid Backover Accidents....67
    Avoid Machine Tip-Over....68
    Operating Or Traveling On Public Roads....69
    Inspect and Maintain ROPS....70
    Add and Operate Attachments Safely....71
    Park and Prepare for Service Safely....72
    Clean Exhaust Filter Safely....73
    Service Cooling System Safely....76
    Remove Paint Before Welding or Heating....77
    Make Welding Repairs Safely....78
    Drive Metal Pins Safely....79
    Service Tires Safely....80
Section 9001: Diagnostics....81
  Group 10: PCU Diagnostic Trouble Codes....81
    000177.00 - Transmission Oil Temperature High....81
    000177.04 - Transmission Oil Temperature Short To Ground....81
    000525.02 - Program Variable REQ_GEAR Has Taken On An Invalid Value....81
    000525.12 - Request For An Undefined Shift Being Made....81
    000723.02 - Transmission Input Speed Sensor Bad Data....81
    002000.02 - ECU CAN Data Invalid....81
    002000.09 - Can Communication Lost For ECU....81
    002033.02 - FLC CAN Data Invalid....81
    002033.09 - CAN Communication Lost For FLC....81
    002225.09 - CAN Communication Lost For Six Wheel Drive....81
    522252.00 - Clutch 1 Hold Pressure Too High....81
    522252.01 - Clutch 1 Hold Pressure Too Low....81
    522253.00 - Clutch 2 Hold Pressure Too High....81
    522253.01 - Clutch 2 Hold Pressure Too Low....81
    522254.00 - Clutch 3 Hold Pressure Too High....81
    522254.01 - Clutch 3 Hold Pressure Too Low....81
    522255.00 - Clutch 4 Hold Pressure Too High....81
    522255.01 - Clutch 4 Hold Pressure Too Low....81
    522256.00 - Clutch A Hold Pressure Too High....81
    522256.01 - Clutch A Hold Pressure Too Low....81
    522257.00 - Clutch B Hold Pressure Too High....81
    522257.01 - Clutch B Hold Pressure Too Low....81
    522258.00 - Clutch C Hold Pressure Too High....81
    522258.01 - Clutch C Hold Pressure Too Low....81
    522259.00 - Clutch D Hold Pressure Too High....81
    522259.01 - Clutch D Hold Pressure Too Low....81
    522397.04 - Not In Forward Or Reverse While In Gear....81
    522398.12 - Park And Not Park Both Active....81
    522405.05 - Park Brake Pressure Low At Power-up....81
    522413.12 - Gear Bits Active In Park....81
    522414.03 - Transmission Clutch D Short To Power....82
    522414.05 - Transmission Clutch D Open/Short To Ground....82
    522507.14 - Inching Pedal During Trans Calibration....82
    522517.31 - Engine Stall Prevention Active....82
    523655.03 - Forward And Reverse Both Active....82
    523699.31 - Transmission Speed Clutch Slipping....82
    523700.00 - Clutch Protection Excessive Inching....82
    523700.16 - Clutch Protection Excessive Inching....82
    523700.31 - Transmission Direction Clutch Slipping....82
    523708.02 - Inching Switch Signal Bad....82
    523712.31 - Transmission CAL Without Park Brake Set....82
    523717.31 - Helper Clutch Pressure High....82
    523718.31 - Clutch Drum Speed Decel Excessive....82
    523720.00 - Clutch D Fill Time Too Long....82
    523720.01 - Clutch D Fill Time Too Short....82
    523721.00 - Clutch C Fill Time Too Long....82
    523721.01 - Clutch C Fill Time Too Short....82
    523722.00 - Clutch B Fill Time Too Long....82
    523722.01 - Clutch B Fill Time Too Short....82
    523723.00 - Clutch A Fill Time Too Long....82
    523723.01 - Clutch A Fill Time Too Short....82
    523724.00 - Clutch 4 Fill Time Too Long....82
    523724.01 - Clutch 4 Fill Time Too Short....82
    523725.00 - Clutch 3 Fill Time Too Long....82
    523725.01 - Clutch 3 Fill Time Too Short....82
    523726.00 - Clutch 2 Fill Time Too Long....82
    523726.01 - Clutch 2 Fill Time Too Short....82
    523727.00 - Clutch 1 Fill Time Too Long....82
    523727.01 - Clutch 1 Fill Time Too Short....82
    523728.31 - Transmission Reverse Cylinder Speed Incorrect At Calibration....82
    523729.31 - Transmission Forward Cylinder Speed Incorrect At Calibration....82
    523730.31 - No Transmission Cylinder Speed During Calibration....82
    523731.31 - Transmission Output Speed Detected At Calibration....82
    523732.31 - Engine Speed Too Low To Calibrate The Transmission....83
    523733.31 - Engine Speed Too High To Calibrate The Transmission....83
    523734.31 - Transmission Too Cold To Calibrate....83
    523735.04 - Valve Driver Supply Voltage Low....83
    523736.14 - Bad Gear Position Switch State....83
    523738.02 - Shifter Handle Problem....83
    523738.31 - Shifter Handle Problem....83
    523739.31 - Not Park And Forward/Reverse Mismatch....83
    523740.31 - Forward/Reverse Switch And Gear Mismatch....83
    523741.31 - Started In Gear....83
    523742.31 - Shifter Vsense Low....83
    523747.14 - Park and Not Park Both Passive....83
    523750.04 - Not Park Passive In Gear Or Neutral....83
    523754.03 - Not Park Active At Startup....83
    523755.05 - Park Start Input Passive At Power Up....83
    523761.03 - Transmission Clutch 4 Short To Power....83
    523761.05 - Transmission Clutch 4 Open/Short To Ground....83
    523762.03 - Transmission Clutch 3 Short To Power....83
    523762.05 - Transmission Clutch 3 Open/Short To Ground....83
    523763.03 - Transmission Clutch 2 Short To Power....83
    523763.05 - Transmission Clutch 2 Open/Short To Ground....83
    523764.03 - Transmission Clutch 1 Short To Power....83
    523764.05 - Transmission Clutch 1 Open/Short To Ground....83
    524029.00 - Inching Pedal Out Of Range High....83
    524029.01 - Inching Pedal Out Of Range Low....83
    524029.12 - Inching Pedal Minimum Voltage Exceeds Maximum Voltage....83
    524194.07 - Direction Sensor Mismatch....83
    524271.03 - Transmission Clutch C Short To Power....83
    524271.05 - Transmission Clutch C Open/Short To Ground....83
    524272.03 - Transmission Clutch B Short To Power....83
    524272.05 - Transmission Clutch B Open/Short To Ground....83
    524273.03 - Transmission Clutch A Short To Power....83
    524273.05 - Transmission Clutch A Open/Short To Ground....83
    524275.31 - Forward/Reverse Without Valid Gear....84
  Group 20: ECU Diagnostic Trouble Codes....84
    000029.03 - Decelerator Pedal Short to Power....84
    000091.03 - Accelerator Pedal Short to Power....84
    000091.04 - Accelerator Pedal Open or Short....84
    000111.07 - Engine Coolant Level Mismatch....84
    000111.17 - Engine Coolant Level Low....84
    000596.31 - Engine Speed Control Enable Switch Fault....84
    000600.31 - Engine Speed Accel/Decel Switch Fault....84
    001196.31 - ECU Anti Theft Locked....84
    001321.05 - Starter Relay Open Circuit....84
    001321.06 - Starter Relay High Current....84
    001321.30 - Starter Engaged for 30 Seconds....84
    001321.31 - Starter Solenoid Open Circuit....84
    002003.09 - CAN Communication Lost For TCU....84
    002033.09 - CAN Communication Lost For FLC....84
    002033.19 - Flex Power Messages Lost....84
    003353.31 - Alternator Output Fault....84
    003587.05 - Ether Solenoid Open or Short to Power....84
    003587.06 - Ether Solenoid Circuit Short to Ground....84
    005004.06 - Soft Start Solenoid Current High....84
  Group 30: ADU Diagnostic Trouble Codes....84
    000158.03 - Switched Power Voltage High....84
    000158.04 - Switched Power Voltage Low....84
    000168.03 - Battery Voltage High....84
    000168.04 - Battery Voltage Low....84
    000442.00 - Display Temperature High....84
    000442.01 - Display Temperature Low....84
    001491.11 - LCD Backlight Failure....84
    002033.09 - CAN Communication Lost For FLC....84
    003597.02 - 5.0 Volt Power Supply Invalid....84
    003598.02 - 1.5 Volt Power Supply Invalid....84
    003599.02 - 3.3 Volt Power Supply Invalid....84
    523436.14 - ADU Watchdog Time Out....85
    523438.31 - Memory Error....85
    523651.02 - Memory Stack Overflow....85
    523773.03 - CAN High Voltage High....85
    523773.04 - CAN High Voltage Low....85
    523774.03 - CAN Low Voltage High....85
    523774.04 - CAN Low Voltage Low....85
    524076.10 - Information Button Stuck....85
    524077.10 - Back Key Button Stuck....85
    524078.10 - Menu Select Button Stuck....85
    524080.10 - Down Arrow Button Stuck....85
    524082.10 - Up Arrow Button Stuck....85
  Group 40: FLC Diagnostic Trouble Codes....85
    000096.03 - Fuel Level Sender Open or Short....85
    000096.04 - Fuel Level Sender Short To Ground....85
    000117.01 - Service Brake Pressure Low....85
    000117.04 - Service Brake Accumulator Switch Short to Ground....85
    000167.03 - System Voltage Above Normal....85
    000167.04 - System Voltage Below Normal....85
    000168.03 - High Battery Voltage....85
    000168.04 - Low Battery Voltage....85
    000746.05 - Differential Lock Solenoid Open or Short....85
    000746.06 - Differential Lock Solenoid High Current....85
    000880.05 - Brake Lights Open or Short....85
    000880.06 - Brake Lights High Current....85
    000977.05 - Reverse Fan Solenoid Open or Short....85
    000977.06 - Reverse Fan Solenoid Short to Ground....85
    000977.07 - Fan Pressure Too High to Reverse....85
    001045.04 - Brake Light Switch Short to Ground....85
    001071.03 - Fan Speed Solenoid Open or Short....85
    001071.04 - Fan Speed Solenoid High Current....85
    001196.02 - ECU Toggle Lock Status Failed....85
    001550.05 - AC Clutch Open Circuit....85
    001550.06 - AC Clutch Short to Ground....86
    001638.00 - Hydraulic Oil High Temperature....86
    001638.03 - Hydraulic Oil Temperature Sensor Open or Short....86
    001638.04 - Hydraulic Oil Temp Short To Ground....86
    001639.01 - Fan Speed Signal Extremely Low....86
    001639.16 - Fan Speed Signal Moderately High....86
    001639.18 - Fan Speed Signal Moderately Low....86
    001713.01 - Hydraulic Oil Filter Restricted....86
    001713.03 - Hydraulic Oil Filter Switch Short to Power....86
    001762.01 - Hydraulic Pressure Low....86
    001762.03 - Hydraulic Pressure Short to Power....86
    001762.04 - Hydraulic Pressure Short to Ground....86
    002000.09 - CAN Communication Lost For ECU....86
    002003.09 - CAN Communication Lost For TCU....86
    002034.09 - CAN Communication Lost For AVC....86
    002040.09 - CAN Communication Lost For ADU....86
    002141.09 - CAN Communication Lost For SSM....86
    002160.09 - CAN Communication Lost For RJ1....86
    002161.09 - CAN Communication Lost For RJ2....86
    002162.09 - CAN Communication Lost For RJ3....86
    002163.09 - CAN Communication Lost For RJ4....86
    002165.09 - CAN Communication Lost For LJ1....86
    002166.09 - CAN Communication Lost For LJ2....86
    002167.09 - CAN Communication Lost For LJ3....86
    002168.09 - CAN Communication Lost For LJ4....86
    002213.09 - CAN Communication Lost For HVC....86
    002225.09 - CAN Communication Lost For 6WD....86
    002251.09 - JDL CAN Comm Bad Update Rate....86
    002348.05 - High Beam Lamps Open Circuit....86
    002348.06 - High Beam Lamps High Current....86
    002350.05 - Low Beam Lamps Open Circuit....86
    002350.06 - Low Beam Lamps High Current....86
    002352.05 - Cab Front Work Lights Open Circuit....86
    002352.06 - Cab Front Work Lights High Current....87
    002353.05 - Front Work Lights Open Circuit....87
    002353.06 - Front Work Lights High Current....87
    002356.05 - Front Cab Corner Lights Open Circuit....87
    002356.06 - Front Cab Corner Lights High Current....87
    002360.05 - Rear Work Lights Open Circuit....87
    002360.06 - Rear Work Lights High Current....87
    002362.05 - Rear Cab Corner Lights Open Circuit....87
    002362.06 - Rear Cab Corner Lights High Current....87
    002366.05 - Side Work Lights Open Circuit....87
    002366.06 - Side Work Lights High Current....87
    002368.05 - Left Turn Lights Open Circuit....87
    002368.06 - Left Turn Lights High Current....87
    002370.05 - Right Turn Lights Open Circuit....87
    002370.06 - Right Turn Lights High Current....87
    002378.05 - Marker/Tail Lights Open Circuit....87
    002378.06 - Marker/Tail Lights High Current....87
    002386.06 - Rotary Beacon Short to Ground....87
    002874.04 - High Beam Switch Short to Ground....87
    002876.04 - Turn Signal Switch Short to Ground....87
    003318.03 - Blade Pitch Sensor Short to Power....87
    003318.04 - Blade Pitch Sensor Short to Ground....87
    003319.03 - Slope Sensor Short to Power....87
    003319.04 - Slope Sensor Short to Ground....87
    003331.03 - Circle Rotate Sensor Short to Power....87
    003331.04 - Circle Rotate Sensor Short to Ground....87
    3509.03 - Sensor Supply 1 Short to Power....87
    3509.04 - Sensor Supply 1 Short to Ground....87
    003510.03 - Sensor Supply 2 Short to Power....87
    003510.04 - Sensor Supply 2 Short to Ground....87
    003511.03 - Sensor Supply 3 Short to Power....87
    003511.04 - Sensor Supply 3 Short to Ground....87
    520450.03 - Saddle Lock Pin Switch Short to Power....87
    521900.03 - Articulation Angle Sensor Short to Power....88
    521900.04 - Articulation Angle Sensor Short to Ground....88
    522340.05 - Saddle Lock Solenoid Open Circuit....88
    522340.06 - Saddle Lock Solenoid High Current....88
    522341.05 - Heated Mirror Open Circuit....88
    522341.06 - Heated Mirror High Current....88
    522343.06 - Rear Window Defrost Relay High Current....88
    522375.01 - Transmission Oil Filter Restricted....88
    522375.03 - Transmission Oil Filter Switch Short to Power....88
    522415.05 - Front Lower Washer Pump Open Circuit....88
    522415.06 - Front Lower Washer Pump High Current....88
    522416.05 - Front Lower Wiper High Speed Open Circuit....88
    522416.06 - Front Lower Wiper High Speed High Current....88
    522417.05 - Front Lower Wiper Park Open Circuit....88
    522418.05 - Front Lower Wiper Low Speed Open Circuit....88
    522418.06 - Front Lower Wiper Low Speed High Current....88
    522426.05 - Rear Wiper Park Open Circuit....88
    522427.05 - Front Wiper Park Open Circuit....88
    522433.05 - Rear Wiper Low Speed Open Circuit....88
    522433.06 - Rear Wiper Low Speed High Current....88
    522434.05 - Front Wiper Low Speed Open Circuit....88
    522434.06 - Front Wiper Low Speed High Current....88
    522435.05 - Front Wiper High Speed Open Circuit....88
    522435.06 - Front Wiper High Speed High Current....88
    522796.05 - Rear Washer Pump Open Circuit....88
    522796.06 - Rear Washer Pump High Current....88
    522797.05 - Front Washer Pump Open Circuit....88
    522797.06 - Front Washer Pump High Current....88
    523440.04 - Unswitched Power Voltage Low....88
    523688.03 - Steering Angle Sensor Short to Power....88
    523688.04 - Steering Angle Sensor Short to Ground....88
    523689.04 - Differential Lock Switch Short to Ground....88
    523901.01 - Front Lower Window Switch Short to Ground....88
    524044.01 - Axle Oil Filter Restricted....89
    524044.03 - Axle Oil Filter Switch Short to Power....89
  Group 50: HVC Diagnostic Trouble Codes....89
    000583.03 - Mainfall Sensor Short to Power....89
    000583.04 - Mainfall Sensor Short to Ground....89
    001503.04 - Left Armrest Up Switch Short to Ground....89
    001503.13 - Left Armrest Position Undetermined....89
    001565.04 - Left Armrest Down Switch Short to Ground....89
    001566.04 - Right Armrest Down Switch Short to Ground....89
    001899.03 - Circle Side Shift A Short to Power....89
    001899.04 - Circle Side Shift A Open or Short to Ground....89
    001899.15 - Circle Side Shift Valve Warm Up Circuit Fault....89
    001899.17 - Circle Side Shift Valve Warm Up Circuit Fault....89
    001900.03 - Circle Side Shift B Short to Power....89
    001900.04 - Circle Side Shift B Open or Short to Ground....89
    001900.15 - Circle Side Shift Valve Warm Up Circuit Fault....89
    001900.17 - Circle Side Shift Valve Warm Up Circuit Fault....89
    001911.03 - Wheel Lean A Short to Power....89
    001911.04 - Wheel Lean A Open or Short to Ground....89
    001911.15 - Wheel Lean Valve Warm Up Circuit Fault....89
    001911.17 - Wheel Lean Valve Warm Up Circuit Fault....89
    001912.03 - Wheel Lean B Short to Power....89
    001912.04 - Wheel Lean B Open or Short to Ground....89
    001912.15 - Wheel Lean Valve Warm Up Circuit Fault....89
    001912.17 - Wheel Lean Valve Warm Up Circuit Fault....89
    001923.03 - Right Blade Lift A Short to Power....89
    001923.04 - Right Blade Lift A Open or Short to Ground....89
    001923.15 - Right Blade Lift Valve Warm Up Circuit Fault....89
    001923.17 - Right Blade Lift Valve Warm Up Circuit Fault....89
    001924.03 - Right Blade Lift B Short to Power....89
    001924.04 - Right Blade Lift B Open or Short to Ground....89
    001924.15 - Right Blade Lift Valve Warm Up Circuit Fault....89
    001924.17 - Right Blade Lift Valve Warm Up Circuit Fault....89
    001935.03 - Articulation A Short to Power....90
    001935.04 - Articulation A Open or Short to Ground....90
    001935.15 - Articulation Valve Warm Up Circuit Fault....90
    001935.17 - Articulation Valve Warm Up Circuit Fault....90
    001936.03 - Articulation B Short to Power....90
    001936.04 - Articulation B Open or Short to Ground....90
    001936.15 - Articulation Valve Warm Up Circuit Fault....90
    001936.17 - Articulation Valve Warm Up Circuit Fault....90
    001947.03 - Circle Rotate A Short to Power....90
    001947.04 - Circle Rotate A Open or Short to Ground....90
    001947.15 - Circle Rotate Valve Warm Up Circuit Fault....90
    001947.17 - Circle Rotate Valve Warm Up Circuit Fault....90
    001948.03 - Circle Rotate B Short to Power....90
    001948.04 - Circle Rotate B Open or Short to Ground....90
    001948.15 - Circle Rotate Valve Warm Up Circuit Fault....90
    001948.17 - Circle Rotate Valve Warm Up Circuit Fault....90
    001959.03 - Blade Side Shift A Short to Power....90
    001959.04 - Blade Side Shift A Open or Short to Ground....90
    001959.15 - Blade Side Shift Valve Warm Up Circuit Fault....90
    001959.17 - Blade Side Shift Valve Warm Up Circuit Fault....90
    001960.03 - Blade Side Shift B Short to Power....90
    001960.04 - Blade Side Shift B Open or Short to Ground....90
    001960.15 - Blade Side Shift Valve Warm Up Circuit Fault....90
    001960.17 - Blade Side Shift Valve Warm Up Circuit Fault....90
    001971.03 - Left Blade Lift A Short to Power....90
    001971.04 - Left Blade Lift A Open or Short to Ground....90
    001971.15 - Left Blade Lift Valve Warm Up Circuit Fault....90
    001971.17 - Left Blade Lift Valve Warm Up Circuit Fault....90
    001972.03 - Left Blade Lift B Short to Power....90
    001972.04 - Left Blade Lift B Open or Short to Ground....90
    001972.15 - Left Blade Lift Valve Warm Up Circuit Fault....90
    001972.17 - Left Blade Lift Valve Warm Up Circuit Fault....90
    001983.03 - Steering Left A Short to Power....90
    001983.04 - Steering Left A Open or Short to Ground....91
    001983.15 - Steering Valve Warm Up Circuit Fault....91
    001983.17 - Steering Valve Warm Up Circuit Fault....91
    001984.03 - Steering Left B Short to Power....91
    001984.04 - Steering Left B Open or Short to Ground....91
    001984.15 - Steering Valve Warm Up Circuit Fault....91
    001984.17 - Steering Valve Warm Up Circuit Fault....91
    002000.09 - CAN Communication Lost For ECU....91
    002003.09 - CAN Communication Lost For TCU....91
    002033.09 - CAN Communication Lost For FLC....91
    002034.09 - CAN Communication Lost For AVC....91
    002160.09 - CAN Communication Lost For RJ1....91
    002161.09 - CAN Communication Lost For RJ2....91
    002162.09 - CAN Communication Lost For RJ3....91
    002163.09 - CAN Communication Lost For RJ4....91
    002165.09 - CAN Communication Lost For LJ1....91
    002166.09 - CAN Communication Lost For LJ2....91
    002167.09 - CAN Communication Lost For LJ3....91
    002168.09 - CAN Communication Lost For LJ4....91
    520752.04 - Return to Straight Switch 1 Short to Ground....91
    520753.04 - Return to Straight Switch 2 Short to Ground....91
    520754.04 - Return to Straight Switch 3 Short to Ground....91
    520755.04 - Return to Straight Switch 4 Short to Ground....91
    521485.04 - Right Armrest Up Switch Short to Ground....91
    521485.13 - Right Armrest Position Undetermined....91
    523849.13 - Return to Straight Switch Mismatch....91
  Group 60: AVC Diagnostic Trouble Codes....91
    001995.03 - Blade Pitch A Short to Power....91
    001995.04 - Blade Pitch A Open or Short to Ground....91
    001995.15 - Blade Pitch Solenoid Warm Up Circuit Fault....91
    001995.17 - Blade Pitch Solenoid Warm Up Circuit Fault....91
    001996.03 - Blade Pitch B Short to Power....91
    001996.04 - Blade Pitch B Open or Short to Ground....91
    001996.15 - Blade Pitch Solenoid Warm Up Circuit Fault....92
    001996.17 - Blade Pitch Solenoid Warm Up Circuit Fault....92
    002000.09 - CAN Communication Lost For ECU....92
    002003.09 - CAN Communication Lost For TCU....92
    002033.09 - CAN Communication Lost For FLC....92
    002160.09 - CAN Communication Lost For RJ1....92
    002161.09 - CAN Communication Lost For RJ2....92
    002162.09 - CAN Communication Lost For RJ3....92
    002163.09 - CAN Communication Lost For RJ4....92
    002165.09 - CAN Communication Lost For LJ1....92
    002166.09 - CAN Communication Lost For LJ2....92
    002167.09 - CAN Communication Lost For LJ3....92
    002168.09 - CAN Communication Lost For LJ4....92
    002213.09 - CAN Communication Lost For HVC....92
    002263.03 - Ripper/Under Cab Auxiliary 1 A Short to Power....92
    002263.04 - Ripper/Under Cab Auxiliary 1 A Open or Short to Ground....92
    002263.15 - Draft Frame Auxiliary Valve 1 Circuit Fault....92
    002263.17 - Draft Frame Auxiliary Valve 1 Circuit Fault....92
    002264.03 - Ripper/Under Cab Auxiliary 1 B Short to Power....92
    002264.04 - Ripper/Under Cab Auxiliary 1 B Open or Short to Ground....92
    002264.15 - Under Cab Auxiliary Valve 1 Warm Up Circuit Fault....92
    002264.17 - Under Cab Auxiliary Valve 1 Warm Up Circuit Fault....92
    002275.03 - Under Cab Auxiliary 2 A Short to Power....92
    002275.04 - Under Cab Auxiliary 2 A Open or Short to Ground....92
    002275.15 - Under Cab Auxiliary Valve 2 Warm Up Circuit Fault....92
    002275.17 - Under Cab Auxiliary Valve 2 Warm Up Circuit Fault....92
    002276.03 - Under Cab Auxiliary 2 B Short to Power....92
    002276.04 - Under Cab Auxiliary 2 B Open or Short to Ground....92
    002276.15 - Under Cab Auxiliary Valve 2 Warm Up Circuit Fault....92
    002276.17 - Under Cab Auxiliary Valve 2 Warm Up Circuit Fault....92
    002287.03 - Under Cab Auxiliary 3 A Short to Power....92
    002287.04 - Under Cab Auxiliary 3 A Open or Short to Ground....92
    002287.15 - Under Cab Auxiliary Valve 3 Warm Up Circuit Fault....92
    002287.17 - Under Cab Auxiliary Valve 3 Warm Up Circuit Fault....93
    002288.03 - Under Cab Auxiliary 3 B Short to Power....93
    002288.04 - Under Cab Auxiliary 3 B Open or Short to Ground....93
    002288.15 - Under Cab Auxiliary Valve 3 Warm Up Circuit Fault....93
    002288.17 - Under Cab Auxiliary Valve 3 Warm Up Circuit Fault....93
    002299.03 - Draft Frame Auxiliary 1 A Short to Power....93
    002299.04 - Draft Frame Auxiliary 1 A Open or Short to Ground....93
    002299.15 - Under Cab Auxiliary Valve 1 Warm Up Circuit Fault....93
    002299.17 - Under Cab Auxiliary Valve 1 Warm Up Circuit Fault....93
    002300.03 - Draft Frame Auxiliary 1 B Short to Power....93
    002300.04 - Draft Frame Auxiliary 1 B Open or Short to Ground....93
    002300.15 - Under Cab Auxiliary Valve 1 Warm Up Circuit Fault....93
    002300.17 - Under Cab Auxiliary Valve 1 Warm Up Circuit Fault....93
    002311.03 - Draft Frame Auxiliary 2 A Short to Power....93
    002311.04 - Draft Frame Auxiliary 2 A Open or Short to Ground....93
    002311.15 - Draft Frame Auxiliary Valve 2 Warm Up Circuit Fault....93
    002311.17 - Draft Frame Auxiliary Valve 2 Warm Up Circuit Fault....93
    002312.03 - Draft Frame Auxiliary 2 B Short to Power....93
    002312.04 - Draft Frame Auxiliary 2 B Open or Short to Ground....93
    002312.15 - Draft Frame Auxiliary Valve 2 Warm Up Circuit Fault....93
    002312.17 - Draft Frame Auxiliary Valve 2 Warm Up Circuit Fault....93
    002323.03 - Draft Frame Auxiliary 3 A Short to Power....93
    002323.04 - Draft Frame Auxiliary 3 A Open or Short to Ground....93
    002323.15 - Draft Frame Auxiliary Valve 3 Warm Up Circuit Fault....93
    002323.17 - Draft Frame Auxiliary Valve 3 Warm Up Circuit Fault....93
    002324.03 - Draft Frame Auxiliary 3 B Short to Power....93
    002324.04 - Draft Frame Auxiliary 3 B Open or Short to Ground....93
    002324.15 - Draft Frame Auxiliary Valve 3 Warm Up Circuit Fault....93
    002324.17 - Draft Frame Auxiliary Valve 3 Warm Up Circuit Fault....93
    004528.03 - Right Auxiliary X Axis 2 Short to Power....93
    004528.04 - Right Auxiliary X Axis 2 Short to Ground....93
    004531.03 - Right Auxiliary X Axis Short to Power....93
    004531.04 - Right Auxiliary X Axis Short to Ground....93
    004531.13 - Right Auxiliary X Axis Redundance Mismatch....94
    004532.03 - Right Auxiliary Y Axis 2 Short to Power....94
    004532.04 - Right Auxiliary Y Axis 2 Short to Ground....94
    004535.03 - Right Auxiliary Y Axis Short to Power....94
    004535.04 - Right Auxiliary Y Axis Short to Ground....94
    004535.13 - Right Auxiliary Y Axis Redundance Mismatch....94
    004539.03 - Right Auxiliary 2 Switch Short to Power (Stuck On)....94
    004539.04 - Right Auxiliary 2 Switch Short to Ground....94
    004540.03 - Right Blade Lift Float Switch Short to Power (Stuck On)....94
    004540.04 - Right Blade Lift Float Switch Short to Ground....94
    004541.03 - Right Auxiliary 1 Switch Short to Power (Stuck On)....94
    004541.04 - Right Auxiliary 1 Switch Short to Ground....94
    004713.03 - Left Auxiliary X Axis Short to Power 2....94
    004713.04 - Left Auxiliary X Axis Short to Ground 2....94
    004716.03 - Left Auxiliary X Axis Short to Power....94
    004716.04 - Left Auxiliary X Axis Short to Ground....94
    004716.13 - Left Auxiliary X Axis Redundance Mismatch....94
    004717.03 - Left Auxiliary Y Axis 2 Short to Power....94
    004717.04 - Left Auxiliary Y Axis 2 Short to Ground....94
    004720.03 - Left Auxiliary Y Axis Short to Power....94
    004720.04 - Left Auxiliary Y Axis Short to Ground....94
    004720.13 - Left Auxiliary Y Axis Redundance Mismatch....94
    004724.03 - Left Auxiliary 2 Switch Short to Power (Stuck On)....94
    004724.04 - Left Auxiliary 2 Switch Short to Ground....94
    004725.03 - Left Blade Lift Float Switch Short to Power (Stuck On)....94
    004725.04 - Left Blade Lift Float Switch Short to Ground....94
    004726.03 - Left Auxiliary 1 Switch Short to Power (Stuck On)....94
    004726.04 - Left Auxiliary 1 Switch Short to Ground....94
    516292.05 - Under Cab End Plate Warm-Up Open Circuit....94
    516292.06 - Under Cab End Plate Warm-Up High Current....94
    516300.05 - Draft Frame End Plate Warm-Up Open Circuit....94
    516300.06 - Draft Frame End Plate Warm-Up High Current....94
  Group 70: OC3 Diagnostic Trouble Codes....94
    000629.12 - SSM Watchdog Time Out....95
    002033.09 - CAN Communication Lost For FLC....95
    002634.04 - Ignition Relay Output Short to Ground....95
    002634.05 - Ignition Relay Output Open....95
    520752.04 - Heated Mirror Button Stuck....95
    520752.09 - Heated Mirror Button Missing CAN Status Message....95
    520753.04 - Rear Defrost Button Stuck....95
    520753.09 - Rear Defrost Button Missing CAN Message....95
    520754.04 - Lower Washer Button Stuck....95
    520754.09 - Lower Washer Button Missing CAN Status Message....95
    520755.04 - Lower Wiper Button Stuck....95
    520755.09 - Lower Wiper Button Missing CAN Status Message....95
    523335.04 - Rear Wiper Button Stuck....95
    523335.09 - Rear Wiper Button Missing CAN Status Message....95
    523336.04 - Rear Washer Button Stuck....95
    523336.09 - Rear Washer Button Missing CAN Status Message....95
    523338.04 - Auto Blade Button Stuck....95
    523338.09 - Auto Blade Button Missing CAN Status Message....95
    523339.04 - Auto Differential Lock Button Stuck....95
    523339.09 - Auto Differential Lock Button Missing CAN Status Message....95
    523340.04 - Auto Shift Button Stuck....95
    523340.09 - Auto Shift Button Missing CAN Status Message....95
    523849.04 - Air Conditioning/Defrost Button Stuck....95
    523849.09 - Air Conditioning/Defrost Button Missing CAN Status Message....95
    523850.04 - Front Wiper Button Stuck....95
    523850.09 - Front Wiper Button Missing CAN Status Message....95
Section 9005: Operational Checkout Procedure....1445
  Group 10: Operational Checkout Procedure....1445
    Operational Checkout....1481
Section 9010: Engine....1516
  Group 05: Theory of Operation....1516
    John Deere Engine....1552
    Exhaust Aftertreatment....1519
    Cold Start Aid—If Equipped....1520
    Soft Start....1521
  Group 15: Diagnostic Information....1516
    John Deere Engine....1552
    Engine Cranks/Won't Start....1516
    Engine Misfires/Runs Irregularly....1516
    Engine Does Not Develop Full Power....1516
    Engine Emits Excessive White Exhaust Smoke....1516
    Engine Emits Excessive Black or Gray Exhaust Smoke....1516
    Engine Will Not Crank....1516
    Engine Idles Poorly....1516
    Abnormal Engine Noise....1516
    Fuel Supply System Check....1516
    Excessive Fuel Consumption....1516
    Fuel in Oil....1516
    Engine Sampling Port Location....1544
    Engine Cooling System Component Location....1545
    Engine Fuel System Component Location....1546
    Engine Intake and Exhaust Component Location....1547
  Group 20: Adjustments....1516
    John Deere Engine....1552
    Service Filter Cleaning....1550
  Group 25: Tests....1516
    John Deere Engine....1552
    Fluid Sampling Procedure....1553
    Engine Slow and Fast Idle Speed Check....1558
    Radiator Temperature Differential Test....1559
    Exhaust Emissions Test Point....1561
Section 9015: Electrical System....1563
  Group 05: System Information....1563
    Electrical Diagram Information....1572
    Electrical Schematic Symbols....1576
  Group 10: System Diagrams....1563
    Fuse and Relay Specifications....1580
    System Functional Schematic, Wiring Diagram and Component Location Master Legend....1582
    System Functional Schematic....1595
    Power and Ground Cables Component Location....1605
    Power and Ground Cables Wiring Diagram....1607
    Front 6WD Harness (W10) Component Location....1610
    Front 6WD Harness (W10) Wiring Diagram....1611
    Heater and Air Conditioner Harness (W12) Component Location....1613
    Heater and Air Conditioner Harness (W12) Wiring Diagram....1615
    Radio Harness (W13) Component Location....1616
    Radio Harness (W13) Wiring Diagram....1617
    Cab Roof Harness (W14) Component Location....1619
    Cab Roof Harness (W14) Wiring Diagram....1621
    Cab Interior Harness (W15) Component Location—6WD....1623
    Cab Interior Harness (W15) Wiring Diagram—6WD....1625
    Cab Interior Harness (W16) Component Location—Non 6WD....1640
    Cab Interior Harness (W16) Wiring Diagram—Non 6WD....1642
    Front Motor Speed Sensor Harnesses (W17 and W18) Component Location—6WD....1657
    Front Motor Speed Sensor Harnesses (W17 and W18) Wiring Diagram—6WD....1659
    Blade Impact Harness (W19) Component Location—If Equipped....1661
    Blade Impact Harness (W19) Wiring Diagram—If Equipped....1662
    Drive and Turn Lights Harnesses (W22 and W23) Component Location....1663
    Drive and Turn Lights Harnesses (W22 and W23) Wiring Diagram....1664
    Steering Angle Sensor Harness (W24) Component Location—6WD....1668
    Steering Angle Sensor Harness (W24) Wiring Diagram—6WD....1669
    Front Platform Harness (W25) Component Location....1671
    Front Platform Harness (W25) Wiring Diagram....1674
    Rear Platform Harness (W26) Component Location....1676
    Rear Platform Harness (W26) Wiring Diagram....1678
    Rear Camera Harness (W27) Component Location—If Equipped....1680
    Rear Camera Harness (W27) Wiring Diagram....1681
    Fan Door Harness (W31) Component Location....1684
    Fan Door Harness (W31) Wiring Diagram....1685
    Midstructure Harness (W34) Component Location....1686
    Midstructure Harness (W34) Wiring Diagram....1688
    Transmission Harness (W35) Component Location....1689
    Transmission Harness (W35) Wiring Diagram....1691
    Tilt Console Harness (W36) Component Location....1692
    Tilt Console Harness (W36) Wiring Diagram....1694
    Electrohydraulic (EH) Main Cab Harness (W38) Component Location....1697
    Electrohydraulic (EH) Main Cab Harness (W38) Wiring Diagram....1698
    Electrohydraulic (EH) Main Frame Harness (W39) Component Location....1699
    Electrohydraulic (EH) Main Frame Harness (W39) Wiring Diagram....1701
    Electrohydraulic (EH) Draft Frame Harness (W40) Component Location....1703
    Electrohydraulic (EH) Draft Frame Harness (W40) Wiring Diagram....1704
    Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Component Location....1705
    Electrohydraulic (EH) Armrest Harnesses (W44 and W45) Wiring Diagram....1707
    Electrohydraulic (EH) Armrest Interlock Harnesses (W46 and W47) Component Location....1709
    Electrohydraulic (EH) Armrest Interlock Harnesses (W46 and W47) Wiring Diagram....1710
    Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Component Location....1712
    Electrohydraulic (EH) Integrated Grade Control (IGC) Harnesses (W48 and W49) Wiring Diagram....1713
    Engine Interface Harness (W50) Component Location....1716
    Engine Interface Harness (W50) Wiring Diagram....1718
    Engine Harness (W51) Component Location....1719
    Engine Harness (W51) Wiring Diagram....1723
    Low Pressure Fuel System Harness (W52) Component Location....1725
    Low Pressure Fuel System Harness (W52) Wiring Diagram....1727
    Exhaust Aftertreatment Harness (W53) Component Location....1728
    Exhaust Aftertreatment Harness (W53) Wiring Diagram....1729
    Rear View Camera Display Harness (W67) Component Location....1730
    Rear View Camera Display Harness (W67) Wiring Diagram....1731
    JDLink™ Harnesses (W6002 and W6003) Component Location—If Equipped....1732
    JDLink™ Modular Telematics Gateway (MTG) Harness (W6002) Wiring Diagram—If Equipped....1734
    JDLink™ Satellite (SAT) Harness (W6003) Wiring Diagram—If Equipped....1735
  Group 15: Sub-System Diagnostics....1565
    Controller Area Network (CAN) Theory of Operation....1740
    Start and Charge Circuits Theory of Operation....1744
    Park Brake Circuit Theory of Operation....1750
    Advanced Display Unit (ADU) and Sealed Switch Module (SSM) Circuits Theory of Operation....1752
    Engine Control Unit (ECU) Circuit Theory of Operation....1756
    Exhaust Aftertreatment Circuit Theory of Operation....1768
    Transmission Control Unit (TCU) Circuit Theory of Operation....1773
    Hydraulic Valve Controller (HVC) Circuit Theory of Operation....1783
    Auxiliary Valve Controller (AVC) Circuit Theory of Operation....1791
    Six Wheel Drive (6WD) Controller Circuit Theory of Operation....1798
    Flex Load Controller (FLC) Circuit Theory of Operation....1804
    Hydraulic Fan Speed and Fan Reversing Circuits Theory of Operation....1812
    Differential Lock Circuit Theory of Operation....1817
    Saddle Lock Circuit Theory of Operation....1821
    Drive Lights, Marker Lights, Hazards, and Turn Lights Circuits Theory of Operation....1823
    Work Lights Circuit Theory of Operation....1827
    Brake Lights and Brake Accumulator Pressure Warning Circuit Theory of Operation....1830
    Backup Lights Circuit Theory of Operation—IF Equipped....1832
    Beacon Light Circuit Theory of Operation—If Equipped....1833
    Wipers and Washers Circuits Theory of Operation....1835
    Rear Window Defog and Heated Side Mirrors Circuits Theory of Operation....1839
    Air Conditioner, Heater, and Precleaner Circuits Theory of Operation....1841
    JDLink™ Circuit Theory of Operation....1845
  Group 16: Monitor Operation....1565
    Advanced Display Unit (ADU)—Service Mode....1849
    Advanced Display Unit (ADU)—Clear Codes....1851
    Advanced Display Unit (ADU)—Show/Hide Main Menu....1852
    Advanced Display Unit (ADU)—Enable Options....1853
    Advanced Display Unit (ADU)—Tire Size....1854
    Advanced Display Unit (ADU)—Fan Speed....1855
    Advanced Display Unit (ADU)—Articulation Calibration....1856
    Advanced Display Unit (ADU)—Steering Cal....1857
    Advanced Display Unit (ADU)—GP Auxiliary Valve Flows....1858
    Advanced Display Unit (ADU)—GP Auxiliary Control Setup....1859
    Advanced Display Unit (ADU)—Exhaust Filter Service....1860
    Advanced Display Unit (ADU)—Exhaust Filter Auto Cleaning Setting....1861
  Group 20: References....1566
    Flex Load Controller (FLC) Outputs....1865
    Service ADVISOR™ Application....1868
    Service ADVISOR™ Connection Procedure....1869
    Reading Diagnostic Trouble Codes (DTC) With Service ADVISOR™ Application....1870
    Intermittent Diagnostic Trouble Code (DTC) Diagnostics....1873
    Cross Slope Diagnostics....1874
    JDLink™ Connection Procedure—If Equipped....1882
    Transmission Control Unit (TCU) Calibration....1883
    6WD Controller Calibration (If Equipped)....1886
    CAN Circuit Testing....1889
    Electrical Component Specifications....1895
    Alternator Test....1899
    Transmission Control and Park Brake Lever Test....1901
    Park/Neutral/Gear Position Switch Module and Forward/Reverse Switch Module Test....1903
    Output Shaft Speed Sensor Test....1906
    Inching Pedal Module Test....1907
    Accelerator Pedal Sensor Test....1911
    Hydraulic Pump Pressure Sensor Test....1913
    Hydraulic Fan Speed Sensor Test....1915
    Lower Windshield Wiper Proximity Switch Adjustment and Installation....1918
    Electrical Component Checks....1920
    Articulation Sensor Linkage Adjustment (Rear Steer)....1926
    Electrohydraulic Valve Calibration Procedure....1928
    Articulation Sensor Calibration Procedure....1931
    Steering Angle Sensor Calibration Procedure....1932
    Park/Neutral/Gear Position Switch Module and Forward/Reverse Switch Module Remove and Install....1933
    Controller Remove and Install....1938
    Steering Angle Sensor Remove and Install....1939
    Connector Terminal Test....1943
    Replace Weather Pack™ Connector....1946
    Install Weather Pack™ Contact....1948
    Replace DEUTSCH® Connectors....1950
    Replace DEUTSCH DEUTSCH is a trademark of Deutsch Co. Rectangular or Triangular Connectors....1567
    Install DEUTSCH® Contact....1954
    Replace (Pull Type) Metri-Pack™ Connectors....1956
    Replace (Push Type) Metri-Pack™ Connectors....1958
    Replace CINCH CINCH is a trademark of the Cinch Co. Connectors....1567
    Install CINCH CINCH is a trademark of the Cinch Co. Contact....1567
    Repair 32 and 48 Way CINCH CINCH is a trademark of the Cinch Co. Connectors....1567
Section 9016: Six Wheel Drive (6WD)....1967
  Group 05: Theory of Operation....1967
    6WD System Operation....1971
    6WD Pump and Displacement Control Operation....1973
    6WD Forward Operation....1974
    6WD Pump and Motor Flushing Pump Operation....1976
    6WD Charge Circuit Operation....1978
    Flushing Valve and Operating Charge Pressure Regulating Valve Operation....1980
    6WD Circuit Relief and Make-Up Valve Operation....1982
    6WD Engagement Manifold Operation....1984
    6WD Motor Operation....1986
    6WD Wheel Operation....1988
    6WD Precision Mode Operation....1990
    6WD Inching Mode Operation....1992
  Group 15: Diagnostic Information....1967
    6WD System Schematic....1995
    6WD System Component Location....1997
    No Front Wheel Motion (Both Wheels)....1967
    No Front Wheel Motion During Inching Operation (Both Wheels)....1967
    No Front Wheel Motion (One Wheel)....1967
    Intermittent or Erratic 6WD Operation....1967
    6WD Charge Pressure Indicator Light On....1967
    Hydraulic Oil Filter....1967
    Hydraulic Oil Temperature Indicator Light On....1967
    6WD System Oil Temperature Too Hot (6WD oil temperature indicator light on)....1967
    Low Torque (One Wheel)....1967
    Low Torque (Both Wheels)....1967
    Wheel Overspeed (One Wheel)....1967
    Operates in Low Speed Only (One Wheel)....1967
    Operates in High Speed Only (One Wheel)....1967
    Wheel(s) Will Not Stay in Neutral....1967
    Operates in One Direction Only....1967
    Wheels Rotate Opposite Each Other....1968
    6WD Will Not Calibrate (No Diagnostic Trouble Codes)....1968
  Group 20: Adjustments....1968
    6WD Start-Up Procedure....2046
    6WD Pump Control Neutral Adjustment....2048
  Group 25: Tests....1968
    Avoid High-Pressure Fluids....2052
    6WD Oil Warm-Up Procedure....2053
    6WD Planetary Brake Leakage Test....2054
    6WD Neutral Charge Pressure Test....2057
    6WD Neutral Charge Pressure Regulating Valve Test....2060
    6WD Operating Charge Pressure Regulating Valve Test....2063
    6WD Neutral Charge Pressure Balance Test....2067
    6WD Motor Leakage Test....2070
    Pressure Override Valve and 6WD Circuit Relief and Make-Up Valve Test....2075
    6WD Motor Flushing Pump Relief Valve Test....2080
    6WD Charge Pump Flow Test....2083
    6WD Engagement Solenoid Valve Test....2084
    Hydraulic Oil Cooler Bypass Valve Pressure Test....2086
Section 9020: Power Train....2088
  Group 05: Theory of Operation....2088
    DF180 Powershift Transmission Operation....2092
    Differential Lock Operation....2094
    Internal Park Brake Operation....2097
    Rear Axle and Tandem Operation....2099
  Group 15: Diagnostic Information....2088
    Power Train Schematic....2102
    Power Train Component Location....2104
    Transmission Overfills With Oil....2088
    Transmission Slippage....2088
    Machine “Jumps” When Inching Pedal Engaged....2088
    Machine Lacks Power Or Moves Slow....2088
    Transmission Shifts Too Slow (Machine Stops When Changing Gears Under Load)....2088
    Transmission Shifts Too Quickly....2088
    Machine Will Not Move In Any Gear and Park Brake Indicator Light Is On (No Load Put On Engine When Shifted Into Gear)....2088
    Machine Will Not Move (Load Put On Engine Or Engine Stalls When Shifted Into Gear)....2088
    Low Pressure In Different Gears Using Same Proportional Solenoid Valve....2088
    Machine Creeps In Neutral (Load Put On Engine When Service Brakes Are Applied)....2088
    Machine Creeps In Gear With Inching Pedal Fully Depressed....2088
    Transmission System Overheats....2088
    Transmission Control and Park Brake Lever Does Not Move Freely....2088
    Excessive Transmission Noise (Under Load or No Load)....2088
    Transmission Engages In a Gear, but Not Gear Selected....2088
    Transmission Fails To Change Gear From First Gear Selected....2088
    Transmission Faults To Neutral....2088
    Excessive Machine Vibration....2088
    Erratic Transmission Oil Pressure....2088
    Excessive Oil Pressure....2088
    Low Oil Pressure In All Gears....2088
    Low Pressure In One Gear But Correct In Other Gears....2088
    Transmission Breather Oil Leakage....2089
    Filter Or Filter Oil Lines Blow Out....2089
    Low Lube Pressure In Some Gears But Correct In Other Gears....2089
    Excessive Lube Pressure In Some Gears But Correct In Other Gears....2089
    Low Transmission Cooler Inlet Pressure And Lube Pressure....2089
    Park Brake Engages While Vehicle Is Moving....2089
    Park Brake Will Not Release....2089
    Park Brake Will Not Hold....2089
    Park Brake Overheats....2089
    Park Brake Noisy....2089
    No Differential Lock Operation....2094
    Differential Lock Slippage....2089
    Excessive Differential and/or Axle Noise....2089
  Group 25: Tests....2089
    Differential Oil Warm-Up Procedure....2153
    Differential Lock Valve Pressure Test....2155
    Differential Oil Cooler Flow Test....2157
    Differential Oil Cooler Relief Valve Pressure Test....2160
    Park Brake Release Pressure Test....2163
Section 9025: Hydraulic System....2164
  Group 05: Theory of Operation....2164
    Hydraulic System Operation....2169
    Hydraulic Pump Operation....2171
    Hydraulic Fan Pump Operation....2173
    Hydraulic System Manifold Operation....2176
    Control Valve Operation—Standard Controls....2178
    Control Valve Operation—EH Controls....2181
    Hydraulic Oil Filter Operation....2185
    System Relief Valve Operation....2187
    Circuit Relief Valve Operation....2188
    Service Brake Valve Operation....2189
    Service Brake Accumulator Operation....2191
    Hydraulic Fan Drive Operation....2193
    Steering System Operation....2196
    Steering System Operation—EH Controls....2198
    Load Sense Operation With All Functions in Neutral....2200
    Load Sense Operation With One Function Activated....2202
    Load Sense Operation With Multiple Functions Activated....2204
    Wheel Lean, Articulation, Circle Side Shift, Blade Pitch, and Blade Side Shift Valve Operation....2207
    Circle Rotate Valve Operation....2209
    Saddle Locking Pin Valve Operation....2211
    Blade Lift and Auxiliary Valve Operation....2213
    Blade Impact Absorption System Operation....2215
    Circle Drive Gearbox Operation-Without Slip Clutch....2218
    Circle Drive Gearbox Operation-With Slip Clutch....2220
    Dual Input Circle Drive Gearbox Operation—If Equipped....2222
    Dual Input Circle Drive Gearbox (With Slip Clutch) Operation—If Equipped....2224
  Group 15: Diagnostic Information....2164
    Hydraulic System Schematic....2233
    Hydraulic System Schematic—EH Controls....2240
    Hydraulic System Component Location....2248
    Hydraulic System Component Location—EH Controls....2254
    No Hydraulics....2165
    Hydraulic System Overheats....2165
    Slow Hydraulic Functions....2165
    Hydraulic Function (or Pump) Makes “Chattering” Noise....2165
    Pump Appears To Be Stuck At Minimum Displacement....2165
    Pump Appears To Be Stuck At Maximum Displacement....2165
    Function Moves Too Fast....2165
    Function Drifts Down....2165
    Excessive Effort to Move Function Control Lever....2165
    Individual Function Is Slow (Cycle Time Checked Slow)....2165
    Slow or Hard Steering....2165
    No Steering....2165
    Erratic Steering....2165
    Excessive Steering Wheel Turns to Steer Machine....2165
    Wheels Move After Steering Wheel Stopped....2165
    Excessive Vibration of Steering Wheel....2165
    Steering Wheel Kickback....2165
    Poor or No Brakes (Steering and Hydraulic System Operation Normal)....2165
    Aggressive Brakes or Brakes Lock Up....2165
    Brakes Drag....2165
    Brakes Chatter or Noisy....2165
    Delay in Braking....2165
    Hydraulic Fan Does Not Reach Full Speed....2165
    Hydraulic Fan Runs At Full Speed Only....2165
    Hydraulic Fan Does Not Spin....2165
    Hydraulic Fan Will Not Reverse Direction....2165
  Group 25: Tests....2165
    Hydraulic Test Port Location....2318
    JT02156A Digital Pressure/Temperature Analyzer Kit Installation....2320
    JT07148 Digital Hydraulic Flowmeter Tester....2321
    Hydraulic Oil Warm-Up Procedure....2322
    Vacuum Pump Installation....2323
    Hydraulic Pump Standby Pressure Hydraulic Pump Standby Pressure & Load Sense Standby Pressure Test{pgNO}2166 Load Sense Standby Pressure Test....2324
    Load Sense Relief Valve Load Sense Relief Valve & Pump Relief Test{pgNO}2166 Pump Relief Test....2329
    System Relief Valve Pressure Test....2333
    Load Sense Shuttle Valve Isolation Test—Standard Controls....2336
    Load Sense Shuttle Valve Isolation Test—EH Controls....2341
    Hydraulic Pump Leakage Test....2346
    Hydraulic Pump Flow Test....2348
    Service Brake Valve Pressure Test....2351
    Service Brake Accumulator Precharge Test....2354
    Service Brake Pressure Switch Test....2357
    Service Brake Valve Leakage Test....2360
    Hydraulic Cylinder Drift Test....2362
    Hydraulic Cylinder Leakage Test....2364
    Rotary Manifold Leakage Test....2367
    Steering System Leakage Test....2371
    Service Brake Accumulator Inlet Check Valve Leakage Test....2376
    Blade Impact Absorption Accumulator Charge Pressure Test....2379
    Blade Impact Absorption Accumulator Hydraulic Discharge Procedure....2382
    Secondary Steering Accumulator Charge Pressure Test....2384
    Blade Lift Relief Valve Test....2387
    Circuit Relief Valve Test—Midmount Scarifier....2389
    Saddle Locking Cylinder Pressure Reducing Valve Test....2391
    Hydraulic Fan Pump Pressure Test....2394
    Hydraulic Fan Pump Flow Test....2396
    Hydraulic Fan Pump Case Drain Test....2398
    Hydraulic Fan Motor Speed Test....2402
    Hydraulic Fan Pump Control Test and Adjustment....2404
    Hydraulic Fan Motor Case Drain Test....2407
Section 9031: Heating and Air Conditioning....2409
  Group 05: Theory of Operation....2409
    Air Conditioning System Cycle Of Operation....2412
  Group 15: Diagnostic Information....2409
    Air Conditioner and Heater Component Location....2415
    Diagnose Air Conditioning System Malfunctions....2416
    Air Conditioning System Does Not Operate....2409
    Air Conditioner Does Not Cool Interior of Cab....2409
    Air Conditioner Runs Constantly, Too Cold....2409
    Diagnose Heater System Malfunctions....2427
    Heater System Does Not Operate....2409
    Heater Does Not Warm Interior of Cab....2409
    Interior Windows Continue to Fog....2409
  Group 25: Tests....2409
    Refrigerant Cautions and Proper Handling....2438
    Air Conditioner and Heater Operational Checks....2439
    Refrigerant Leak Test....2443
    R134a Oil Charge Capacity....2444
    R134a Refrigerant Charge Capacity....2445
    Air Conditioner Compressor Clutch Test....2446
    Air Conditioner High/Low Pressure Switch Test....2447
    Air Conditioner Freeze Control Switch Test....2449
    Heater Blower Switch Test....2451
    Heater Blower Resistor Test....2452
    Heater Blower Motor Test....2454
    R134a Air Conditioning System Test....2455
    Operating Pressure Diagnostic Chart....2457

John Deere 670G, 670GP, 672G & 672GP Motor Grader Operation & Test Technical Manual (TM12135)