Complete Operation and Test technical manual with electrical wiring diagrams for John Deere Motor Graders Models 870G, 870GP, 872G, and 872GP with Engines 6090HDW01, 6090HDW04, with workshop information to maintain, diagnose, service, and rebuild like professional mechanics.

John Deere Motor Graders Models 870G, 870GP, 872G and 872GP workshop Diagnosis and Test manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on 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.

TM11208 - John Deere Motor Graders 870G, 870GP, 872G, 872GP Technical Manual - Operation and Test.PDF
TM11208 - John Deere Motor Graders 870G, 870GP, 872G, 872GP Technical Manual - Operation and Test.EPUB

Total Pages: 2,331 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS  (SN. before 634753)
 Foreword
   General Information
      Safety
      Torque Values
   Wheels
      Powered Wheels and Fasteners
   Axles and Suspension Systems
      Input Drive Shafts and U-Joints
      Non-Powered Wheel Axles
      Powered Wheel Axles
      Axle Shafts, Bearings, and Reduction Gears
      Hydraulic System
   Transmission
      Removal and Installation
      Hydraulic System
   Engine
      Removal and Installation
   Engine Auxiliary System
      Cooling System
      External Fuel Supply Systems
   Torsional Isolator
      Elements
   Steering System
      Power Steering
      Hydraulic System
   Service Brakes
      Active Elements
      Hydraulic System
   Park Brake
      Active Elements
   Frame, Chassis or Supporting Structure
      Frame Installation
   Operator’s Station
      Removal and Installation
      Operator Enclosure
      Pedal Assembly
      Steering Tilt Console
      Seat and Seat Belt
      Heating and Air Conditioning
   Sheet Metal and Styling
      Grille and Grille Housing
   Main Hydraulic System
      Hydraulic System
   Grading Device
      Controls Linkage
      Frames
      Circle Gearbox
      Hydraulic System
   Ground Conditioning Tool
      Frames
   Dealer Fabricated Tools

tm11208 - 870G, 870GP, 872G, and 872GP Motor Grader

Table of Contents

Foreword

Section 9000: General Information

Group 01: Safety

Recognize Safety Information

Follow Safety Instructions

Operate Only If Qualified

Wear Protective Equipment

Avoid Unauthorized Machine Modifications

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Fluids

Avoid High-Pressure Oils

Beware of Exhaust Fumes

Prevent Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Dispose of Waste Properly

Prepare for Emergencies

Use Steps and Handholds Correctly

Start Only From Operator's Seat

Use and Maintain Seat Belt

Prevent Unintended Machine Movement

Avoid Work Site Hazards

Keep Riders Off Machine

Avoid Backover Accidents

Avoid Machine Tip-Over

Operating Or Traveling On Public Roads

Inspect and Maintain ROPS

Add and Operate Attachments Safely

Park And Prepare For Service Safely

Service Cooling System Safely

Remove Paint Before Welding or Heating

Make Welding Repairs Safely

Drive Metal Pins Safely

Service Tires Safely

Section 9001: Diagnostics

Group 10: Transmission Control Unit (TCU) Diagnostic Trouble Codes

000177.00 - Transmission Oil Temperature High

000177.04 - Transmission Oil Temperature Short To Ground

000525.02 - Program Variable REQ_GEAR Has Taken On An Invalid Value

000525.12 - Request For An Undefined Shift Being Made

000723.02 - Engine Speed Sensor Bias Voltage Out Of Tolerance

002000.02 - ECU CAN Data Invalid

002000.09 - Can Communication Lost For ECU

002033.02 - FLC CAN Data Invalid

002033.09 - CAN Communication Lost For FLC

002225.09 - CAN Communication Lost For Six Wheel Drive

522252.00 - Clutch 1 Hold Pressure Too High

522252.01 - Clutch 1 Hold Pressure Too Low

522253.00 - Clutch 2 Hold Pressure Too High

522253.01 - Clutch 2 Hold Pressure Too Low

522254.00 - Clutch 3 Hold Pressure Too High

522254.01 - Clutch 3 Hold Pressure Too Low

522255.00 - Clutch 4 Hold Pressure Too High

522255.01 - Clutch 4 Hold Pressure Too Low

522256.00 - Clutch A Hold Pressure Too High

522256.01 - Clutch A Hold Pressure Too Low

522257.00 - Clutch B Hold Pressure Too High

522257.01 - Clutch B Hold Pressure Too Low

522258.00 - Clutch C Hold Pressure Too High

522258.01 - Clutch C Hold Pressure Too Low

522259.00 - Clutch D Hold Pressure Too High

522259.01 - Clutch D Hold Pressure Too Low

522397.04 - Not In Forward Or Reverse While In Gear

522398.12 - Park And Not Park Both Active

522405.05 - Park Brake Pressure Low At Power-up

522413.12 - Gear Bits Active In Park

522414.03 - Transmission Clutch D Short To Power

522414.05 - Transmission Clutch D Open/Short To Ground

522507.14 - Inching Pedal During Trans Calibration

522517.31 - Engine Stall Prevention Active

523655.03 - Forward And Reverse Both Active

523699.31 - Transmission Speed Clutch Slipping

523700.00 - Clutch Protection Excessive Inching

523700.16 - Clutch Protection Excessive Inching

523700.31 - Transmission Direction Clutch Slipping

523708.02 - Inching Switch Signal Bad

523712.31 - Transmission CAL Without Park Brake Set

523717.31 - Helper Clutch Pressure High

523718.31 - Clutch Drum Speed Decel Excessive

523720.00 - Clutch D Fill Time Too Long

523720.01 - Clutch D Fill Time Too Short

523721.00 - Clutch C Fill Time Too Long

523721.01 - Clutch C Fill Time Too Short

523722.00 - Clutch B Fill Time Too Long

523722.01 - Clutch B Fill Time Too Short

523723.00 - Clutch A Fill Time Too Long

523723.01 - Clutch A Fill Time Too Short

523724.00 - Clutch 4 Fill Time Too Long

523724.01 - Clutch 4 Fill Time Too Short

523725.00 - Clutch 3 Fill Time Too Long

523725.01 - Clutch 3 Fill Time Too Short

523726.00 - Clutch 2 Fill Time Too Long

523726.01 - Clutch 2 Fill Time Too Short

523727.00 - Clutch 1 Fill Time Too Long

523727.01 - Clutch 1 Fill Time Too Short

523728.31 - Transmission Reverse Cylinder Speed Incorrect At Calibration

523729.31 - Transmission Forward Cylinder Speed Incorrect At Calibration

523730.31 - No Transmission Cylinder Speed During Calibration

523731.31 - Transmission Output Speed Detected At Calibration

523732.31 - Engine Speed Too Low To Calibrate The Transmission

523733.31 - Engine Speed Too High To Calibrate The Transmission

523734.31 - Transmission Too Cold To Calibrate

523735.04 - Valve Driver Supply Voltage Low

523736.14 - Bad Gear Position Switch State

523738.02 - Shifter Handle Problem

523738.31 - Shifter Handle Problem

523739.31 - Not Park And Forward/Reverse Mismatch

523740.31 - Forward/Reverse Switch And Gear Mismatch

523741.31 - Started In Gear

523742.31 - Shifter Vsense Low

523747.14 - Park and Not Park Both Passive

523750.04 - Not Park Passive In Gear Or Neutral

523754.03 - Not Park Active At Startup

523755.05 - Park Start Input Passive At Power Up

523761.03 - Transmission Clutch 4 Short To Power

523761.05 - Transmission Clutch 4 Open/Short To Ground

523762.03 - Transmission Clutch 3 Short To Power

523762.05 - Transmission Clutch 3 Open/Short To Ground

523763.03 - Transmission Clutch 2 Short To Power

523763.05 - Transmission Clutch 2 Open/Short To Ground

523764.03 - Transmission Clutch 1 Short To Power

523764.05 - Transmission Clutch 1 Open/Short To Ground

524029.00 - Inching Pedal Out Of Range High

524029.01 - Inching Pedal Out Of Range Low

524029.12 - Inching Pedal Minimum Voltage Exceeds Maximum Voltage

524194.07 - Direction Sensor Mismatch

524271.03 - Transmission Clutch C Short To Power

524271.05 - Transmission Clutch C Open/Short To Ground

524272.03 - Transmission Clutch B Short To Power

524272.05 - Transmission Clutch B Open/Short To Ground

524273.03 - Transmission Clutch A Short To Power

524273.05 - Transmission Clutch A Open/Short To Ground

524275.31 - Forward/Reverse Without Valid Gear

Group 20: Engine Control Unit (ECU) Diagnostic Trouble Codes

29.03 - Decel Pedal Short to Power

91.03 - Accel Pedal Short to Power

91.04 - Accel Pedal Open or Short

107.00 - Engine Air Filter Restricted

596.31 - Engine Speed Control Enable Switch Fault

600.31 - Engine Speed Accel/ Decel Switch Fault

1196.31 - ECU Anti Theft Locked

1321.05 - Starter Relay Open Circuit

1321.06 - Starter Relay High Current

1321.30 - Starter Engaged for 30 Seconds

1321.31 - Starter Solenoid Open Circuit

2003.09 - CAN Communication Lost For TCU

2033.09 - CAN Communication Lost For FLC

Group 30: Advance Display Unit (ADU) Diagnostic Trouble Codes

158.03 - Switched Power Voltage High

158.04 - Switched Power Voltage Low

168.03 - Battery Voltage High

168.04 - Battery Voltage Low

442.00 - Display Temperature High

442.01 - Display Temperature Low

1491.11 - LCD Backlight Failure

2033.09 - CAN Communication Lost For FLC

3597.02 - 5.0 Volt Power Supply Invalid

3598.02 - 1.5 Volt Power Supply Invalid

3599.02 - 3.3 Volt Power Supply Invalid

523436.14 - ADU Watchdog Time Out

523438.31 - Memory Error

523651.02 - Memory Stack Overflow

523773.03 - CAN High Voltage High

523773.04 - CAN High Voltage Low

523774.03 - CAN Low Voltage High

523774.04 - CAN Low Voltage Low

524076.10 - Information Button Stuck

524077.10 - Back Key Button Stuck

524078.10 - Menu Select Button Stuck

524080.10 - Down Arrow Button Stuck

524082.10 - Up Arrow Button Stuck

Group 40: Flex Load Controller (FLC) Diagnostic Trouble Codes

96.03 - Fuel Level Sender Open or Short

96.04 - Fuel Level Sender Short To Ground

117.01 - Service Brake Pressure Low

117.04 - Service Brake Accumulator Switch Short to Ground

167.03 - System Voltage Above Normal

167.04 - System Voltage Below Normal

168.03 - High Battery Voltage

168.04 - Low Battery Voltage

628.12 - Updating Software

746.05 - Differential Lock Solenoid Open or Short

746.06 - Differential Lock Solenoid High Current

880.05 - Brake Lights Open or Short

880.06 - Brake Lights High Current

977.05 - Reverse Fan Solenoid Open or Short

977.06 - Reverse Fan Solenoid Short to Ground

977.07 - Fan Pressure Too High to Reverse

1045.04 - Brake Light Switch Short to Ground

1071.03 - Fan Speed Solenoid Open or Short

1071.04 - Fan Speed Solenoid High Current

1550.05 - AC Clutch Open Circuit

1550.06 - AC Clutch Short to Ground

1638.00 - Hydraulic Oil High Temperature

1638.04 - Hydraulic Oil Temp Short To Ground

1713.01 - Hydraulic Oil Filter Restricted

1713.03 - Hydraulic Oil Filter Switch Short to Power

001762.01 - Hydraulic Pressure Low

001762.03 - Hydraulic Pressure Short to Power

001762.04 - Hydraulic Pressure Short to Ground

2000.09 - CAN Communication Lost For ECU

2003.09 - CAN Communication Lost For TCU

2034.09 - CAN Communication Lost For AVC

2040.09 - CAN Communication Lost For ADU

2141.09 - CAN Communication Lost For SSM

2160.09 - CAN Communication Lost For RJ1

2161.09 - CAN Communication Lost For RJ2

2162.09 - CAN Communication Lost For RJ3

2163.09 - CAN Communication Lost For RJ4

2165.09 - CAN Communication Lost For LJ1

2166.09 - CAN Communication Lost For LJ2

2167.09 - CAN Communication Lost For LJ3

2168.09 - CAN Communication Lost For LJ4

2213.09 - CAN Communication Lost For HVC

2225.09 - CAN Communication Lost For 6WD

2348.05 - Hi Beam Lamps Open Circuit

2348.06 - High Beam Lamps High Current

2350.05 - Low Beam Lamps Open Circuit

2350.06 - Low Beam Lamps High Current

2352.05 - Cab Front Work Lights Open Circuit

2352.06 - Cab Front Work Lights High Current

2353.05 - Front Work Lights Open Circuit

2353.06 - Front Work Lights High Current

2356.05 - Front Cab Corner Lights Open Circuit

2356.06 - Front Cab Corner Lights High Current

2360.05 - Rear Work Lights Open Circuit

2360.06 - Rear Work Lights High Current

2362.05 - Rear Cab Corner Lights Open Circuit

2362.06 - Rear Cab Corner Lights High Current

2366.05 - Side Work Lights Open Circuit

2366.06 - Side Work Lights High Current

2368.05 - Left Turn Lights Open Circuit

2368.06 - Left Turn Lights High Current

2370.05 - Right Turn Lights Open Circuit

2370.06 - Right Turn Lights High Current

2378.05 - Marker/Tail Lights Open Circuit

2378.06 - Marker/Tail Lights High Current

2386.06 - Rotary Beacon Short to Ground

2874.04 - High Beam Switch Short to Ground

2876.04 - Turn Signal Switch Short to Ground

2927.03 - Steering Angle Sensor Short to Power

2927.04 - Steering Angle Sensor Short to Ground

3318.03 - Blade Pitch Sensor Short to Power

3318.04 - Blade Pitch Sensor Short to Ground

3319.03 - Slope Sensor Short to Power

3319.04 - Slope Sensor Short to Ground

3331.03 - Circle Rotate Sensor Short to Power

3331.04 - Circle Rotate Sensor Short to Ground

3509.04 - Sensor Supply 1 Short to Ground

3510.03 - Sensor Supply 2 Short to Power

3510.04 - Sensor Supply Voltage 2 Short to Ground

3511.03 - Sensor Supply Voltage 3 Short to Power

3511.04 - Sensor Supply Voltage 3 Short to Ground

520450.03 - Saddle Lock Pin Switch Short to Power

521650.00 - Fan Pressure Extremely High

521650.03 - Hydraulic Fan Pressure Sensor Short to Power

521650.04 - Hydraulic Fan Pressure Sensor Short to Ground

521900.03 - Articulation Angle Sensor Short to Power

521900.04 - Articulation Angle Sensor Short to Ground

522340.05 - Saddle Lock Solenoid Open Circuit

522340.06 - Saddle Lock Solenoid High Current

522341.05 - Heated Mirror Open Circuit

522341.06 - Heated Mirror High Current

522343.06 - Rear Window Defrost Relay High Current

522375.01 - Transmission Oil Filter Restricted

522375.03 - Transmission Oil Filter Switch Short to Power

522415.05 - Front Lower Washer Pump Open Circuit

522415.06 - Front Lower Washer Pump High Current

522416.05 - Front Lower Wiper High-Speed Open Circuit

522416.06 - Front Lower Wiper High-Speed High Current

522417.05 - Front Lower Wiper Park Open Circuit

522426.05 - Rear Wiper Park Open Circuit

522427.05 - Front Wiper Park Open Circuit

522418.05 - Front Lower Wiper Low-Speed Open Circuit

522418.06 - Front Lower Wiper Low-Speed High Current

522433.05 - Rear Wiper Low-Speed Open Circuit

522433.06 - Rear Wiper Low-Speed High Current

522434.05 - Front Wiper Low-Speed Open Circuit

522434.06 - Front Wiper Low-Speed High Current

522435.05 - Front Wiper High-Speed Open Circuit

522435.06 - Front Wiper High-Speed High Current

522796.05 - Rear Washer Pump Open Circuit

522796.06 - Rear Washer Pump High Current

522797.05 - Front Washer Pump Open Circuit

522797.06 - Front Washer Pump High Current

523440.04 - Unswitched Power Voltage Low

523688.03 - Steering Angle Sensor Short To Power

523688.04 - Steering Angle Sensor Short To Ground

523689.04 - Differential Lock Switch Short to Ground

523901.01 - Front Lower Window Switch Short to Ground

524044.01 - Axle Oil Filter Restricted

524044.03 - Axle Oil Filter Switch Short to Power

Group 50: Hydraulic Valve Controller (HVC) Diagnostic Trouble Codes

000583.03 - Mainfall Sensor Short to Power

000583.04 - Mainfall Sensor Short to Ground

1503.04 - Left Armrest Up Switch Short to Ground

1503.13 - Left Armrest Position Undetermined

1565.04 - Left Armrest Down Switch Short to Ground

1566.04 - Right Armrest Down Switch Short to Ground

001899.03 - Circle Side Shift A Short to Power

001899.04 - Circle Side Shift A Open or Short to Ground

001900.03 - Circle Side Shift B Short to Power

001900.04 - Circle Side Shift B Open or Short to Ground

001911.03 - Wheel Lean A Short to Power

001911.04 - Wheel Lean A Open or Short to Ground

001912.03 - Wheel Lean B Short to Power

001912.04 - Wheel Lean B Open or Short to Ground

001923.03 - Right Blade Lift A Short to Power

001923.04 - Right Blade Lift A Open or Short to Ground

001924.03 - Right Blade Lift B Short to Power

001924.04 - Right Blade Lift B Open or Short to Ground

001935.03 - Articulation A Short to Power

001935.04 - Articulation A Open or Short to Ground

001936.03 - Articulation B Short to Power

001936.04 - Articulation B Open or Short to Ground

001947.03 - Circle Rotate A Short to Power

001947.04 - Circle Rotate A Open or Short to Ground

001948.03 - Circle Rotate B Short to Power

001948.04 - Circle Rotate B Open or Short to Ground

001959.03 - Blade Side Shift A Short to Power

001959.04 - Blade Side Shift A Open or Short to Ground

001960.03 - Blade Side Shift B Short to Power

001960.04 - Blade Side Shift B Open or Short to Ground

001971.03 - Left Blade Lift A Short to Power

001971.04 - Left Blade Lift A Open or Short to Ground

001972.03 - Left Blade Lift B Short to Power

001972.04 - Left Blade Lift B Open or Short to Ground

001983.03 - Steering Left A Short to Power

001983.04 - Steering Left A Open or Short to Ground

001984.03 - Steering Left B Short to Power

001984.04 - Steering Left B Open or Short to Ground

2000.09 - CAN Communication Lost For ECU

002003.09 - CAN Communication Lost For TCU

002033.09 - CAN Communication Lost For FLC

002034.09 - CAN Communication Lost For AVC

002160.09 - CAN Communication Lost For RJ1

002161.09 - CAN Communication Lost For RJ2

002162.09 - CAN Communication Lost For RJ3

002163.09 - CAN Communication Lost For RJ4

002165.09 - CAN Communication Lost For LJ1

002166.09 - CAN Communication Lost For LJ2

002167.09 - CAN Communication Lost For LJ3

002168.09 - CAN Communication Lost For LJ4

520752.04 - Return to Straight Switch 1 Short to Ground

520753.04 - Return to Straight Switch 2 Short to Ground

520754.04 - Return to Straight Switch 3 Short to Ground

520755.04 - Return to Straight Switch 4 Short to Ground

521485.04 - Right Armrest Up Switch Short to Ground

521485.13 - Right Armrest Position Undetermined

523849.13 - Return to Straight Switch Mismatch

Group 60: Auxiliary Valve Controller (AVC) Diagnostic Trouble Codes

001995.03 - Blade Pitch A Short to Power

001995.04 - Blade Pitch A Open or Short to Ground

001996.03 - Blade Pitch B Short to Power

001996.04 - Blade Pitch B Open or Short to Ground

2000.09 - CAN Communication Lost For ECU

002003.09 - CAN Communication Lost For TCU

002033.09 - CAN Communication Lost For FLC

002160.09 - CAN Communication Lost For RJ1

002161.09 - CAN Communication Lost For RJ2

002162.09 - CAN Communication Lost For RJ3

002163.09 - CAN Communication Lost For RJ4

002165.09 - CAN Communication Lost For LJ1

002166.09 - CAN Communication Lost For LJ2

002167.09 - CAN Communication Lost For LJ3

002168.09 - CAN Communication Lost For LJ4

002213.09 - CAN Communication Lost For HVC

2263.03 - Ripper/Under Cab Auxiliary 1 A Short to Power

2263.04 - Ripper/Under Cab Auxiliary 1 A Open or Short to Ground

2264.03 - Ripper/Under Cab Auxiliary 1 B Short to Power

2264.04 - Ripper/Under Cab Auxiliary 1 B Open or Short to Ground

2275.03 - Under Cab Auxiliary 2 A Short to Power

2275.04 - Under Cab Auxiliary 2 A Open or Short to Ground

2276.03 - Under Cab Auxiliary 2 B Short to Power

2276.04 - Under Cab Auxiliary 2 B Open or Short to Ground

2287.03 - Under Cab Auxiliary 3 A Short to Power

2287.04 - Under Cab Auxiliary 3 A Open or Short to Ground

2288.03 - Under Cab Auxiliary 3 B Short to Power

2288.04 - Under Cab Auxiliary 3 B Open or Short to Ground

2299.03 - Draft Frame Auxiliary 1 A Short to Power

2299.04 - Draft Frame Auxiliary 1 A Open or Short to Ground

2300.03 - Draft Frame Auxiliary 1 B Short to Power

2300.04 - Draft Frame Auxiliary 1 B Open or Short to Ground

2311.03 - Draft Frame Auxiliary 2 A Short to Power

2311.04 - Draft Frame Auxiliary 2 A Open or Short to Ground

2312.03 - Draft Frame Auxiliary 2 B Short to Power

2312.04 - Draft Frame Auxiliary 2 B Open or Short to Ground

2323.03 - Draft Frame Auxiliary 3 A Short to Power

2323.04 - Draft Frame Auxiliary 3 A Open or Short to Ground

2324.03 - Draft Frame Auxiliary 3 B Short to Power

2324.04 - Draft Frame Auxiliary 3 B Open or Short to Ground

004528.03 - Right Auxiliary X Axis 2 Short to Power

004528.04 - Right Auxiliary X Axis 2 Short to Ground

004531.03 - Right Auxiliary X Axis Short to Power

004531.04 - Right Auxiliary X Axis Short to Ground

004531.13 - Right Auxiliary X Axis Redundance Mismatch

004532.03 - Right Auxiliary Y Axis 2 Short to Power

004532.04 - Right Auxiliary Y Axis 2 Short to Ground

004535.03 - Right Auxiliary Y Axis Short to Power

004535.04 - Right Auxiliary Y Axis Short to Ground

004535.13 - Right Auxiliary Y Axis Redundance Mismatch

4539.03 - Right Auxiliary 2 Switch Short to Power (Stuck On)

4539.04 - Right Auxiliary 2 Switch Short to Ground

4540.03 - Right Blade Lift Float Switch Short to Power (Stuck On)

4540.04 - Right Blade Lift Float Switch Short to Ground

4541.03 - Right Auxiliary 1 Switch Short to Power (Stuck On)

4541.04 - Right Auxiliary 1 Switch Short to Ground

004713.03 - Left Auxiliary X Axis Short to Power 2

004713.04 - Left Auxiliary X Axis Short to Ground 2

004716.03 - Left Auxiliary X Axis Short to Power

004716.04 - Left Auxiliary X Axis Short to Ground

004716.13 - Left Auxiliary X Axis Redundance Mismatch

004717.03 - Left Auxiliary Y Axis 2 Short to Power

004717.04 - Left Auxiliary Y Axis 2 Short to Ground

004720.03 - Left Auxiliary Y Axis Short to Power

004720.04 - Left Auxiliary Y Axis Short to Ground

004720.13 - Left Auxiliary Y Axis Redundance Mismatch

4724.03 - Left Auxiliary 2 Switch Short to Power (Stuck On)

4724.04 - Left Auxiliary 1 Switch Short to Ground

4725.03 - Left Blade Lift Float Switch Short to Power (Stuck On)

4725.04 - Left Blade Lift Float Switch Short to Ground

4726.03 - Left Auxiliary 1 Switch Short to Power (Stuck On)

4726.04 - Left Auxiliary 1 Switch Short to Ground

516292.05 - Under Cab End Plate Warm-Up Open Circuit

516292.06 - Under Cab End Plate Warm-Up High Current

516300.05 - Draft Frame End Plate Warm-Up Open Circuit

516300.06 - Draft Frame End Plate Warm-Up High Current

Group 70: Sealed Switch Module (SSM) Diagnostic Trouble Codes

629.12 - SSM Watchdog Time Out

2033.09 - CAN Communication Lost For FLC

2634.04 - Ignition Relay Output Short to Ground

2634.05 - Ignition Relay Output Open

520752.04 - Heated Mirror Button Stuck

520752.09 - Heated Mirror Button Missing CAN Status Message

520753.04 - Rear Defrost Button Stuck

520753.09 - Rear Defrost Button Missing CAN Message

520754.04 - Lower Washer Button Stuck

520754.09 - Lower Washer Button Missing CAN Status Message

520755.04 - Lower Wiper Button Stuck

520755.09 - Lower Wiper Button Missing CAN Status Message

523335.04 - Rear Wiper Button Stuck

523335.09 - Rear Wiper Button Missing CAN Status Message

523336.04 - Rear Washer Button Stuck

523336.09 - Rear Washer Button Missing CAN Status Message

523338.04 - Auto Blade Button Stuck

523338.09 - Auto Blade Button Missing CAN Status Message

523339.04 - Auto Differential Lock Button Stuck

523339.09 - Auto Differential Lock Button Missing CAN Status Message

523340.04 - Auto Shift Button Stuck

523340.09 - Auto Shift Button Missing CAN Status Message

523849.04 - Air Conditioning/Defrost Button Stuck

523849.09 - Air Conditioning/Defrost Button Missing CAN Status Message

523850.04 - Front Wiper Button Stuck

523850.09 - Front Wiper Button Missing CAN Status Message

523852.04 - Front Washer Button Stuck

523852.09 - Front Washer Button Missing CAN Status Message

523854.04 - Right Cab Work Lights Button Stuck

523854.09 - Right Cab Work Lights Button Missing CAN Status Message

523855.04 - Cab Corner Work Lights Button Stuck

523855.09 - Cab Corner Work Lights Button Missing CAN Status Message

523856.04 - Spare Button Stuck

523856.09 - Spare Button Missing CAN Status Message

523857.04 - Drive Marker Light Button Stuck

523857.09 - Drive Marker Light Button Missing CAN Status Message

523858.04 - Frame Work Light Button Stuck

523858.09 - Frame Work Light Button Missing CAN Status Message

523860.04 - Cab Front Work Lights Button Stuck

523860.09 - Cab Front Work Lights Button Missing CAN Status Message

523861.04 - Lever Steering Button Stuck

523861.09 - Lost Lever Steering LED Message

523862.04 - Saddle Lock Pin Button Stuck

523862.09 - Saddle Lock Pin Button Missing CAN Status Message

523863.04 - Hydraulic Enable Button Stuck

523863.09 - Hydraulic Enable Button Missing CAN Status Message

523864.04 - Hazard Button Stuck

523864.09 - Hazard Button Missing CAN Status Message

523865.04 - Beacon Light Button Stuck

523865.09 - Beacon Light Button Missing CAN Status Message

523867.04 - Stop Button Stuck

523867.09 - Stop Button Missing CAN Status Message

523868.04 - Start Button Stuck

523868.09 - Start Button Missing CAN Status Message

Group 80: Six Wheel Drive (6WD) Diagnostic Trouble Codes

000598.04 - Bottom of Inching Pedal Short To Ground

000611.02 - Left Pump Neutral Out of Adjustment

000611.06 - No Left Motor Speed During Calibration

000611.07 - No Left Motor Speed During Warm Up

000611.11 - Unable to Calibrate Left Forward Gears 1—4

000612.02 - Right Pump Neutral Out of Adjustment

000612.06 - No Right Motor Speed During Calibration

000612.07 - No Right Motor Speed During Warm Up

000612.11 - Unable to Calibrate Right Forward Gears 1—4

000613.11 - Unable to Calibrate Left Reverse Gears 1—4

000614.07 - Left High/Low Solenoid Off During Calibration

000614.11 - Unable to Calibrate Right Reverse Gears 1—4

000615.07 - Right High/Low Solenoid Off During Calibration

001592.00 - Six Wheel Drive Left Motor Overspeed

001593.00 - Six Wheel Drive Right Motor Overspeed

2000.09 - CAN Communication Lost For ECU

002003.09 - CAN Communication Lost From Transmission Control Unit (TCU)

002033.09 - CAN Communication Lost For FLC

002538.31 - Transmission Control Unit (TCU) Not Allowing Precision Mode

002612.04 - Six Wheel Drive On/Off Switch Short To Ground

522447.04 - Right Forward Brake Solenoid Short To Ground

522447.05 - Right Forward Brake Solenoid Open Circuit

522448.04 - Right Reverse Brake Solenoid Short To Ground

522448.05 - Right Reverse Brake Solenoid Open Circuit

522449.04 - Left Reverse Brake Solenoid Short To Ground

522449.05 - Left Reverse Brake Solenoid Open Circuit

522450.04 - Left Forward Brake Solenoid Short To Ground

522450.05 - Left Forward Brake Solenoid Open Circuit

522507.03 - Calibration Power After Power-Up

522507.04 - Six Wheel Drive Calibration Input Short To Ground

523216.05 - No Voltage To Valve Power 4

523217.05 - No Voltage To Valve Power 5

523218.05 - No Voltage To Valve Power 2

523219.05 - No Voltage To Valve Power 1

523678.03 - Right Drive Pump Reverse Solenoid Short To Power

523678.05 - Right Drive Pump Reverse Solenoid Open Circuit

523679.03 - Left Drive Pump Reverse Solenoid Short To Power

523679.05 - Left Drive Pump Reverse Solenoid Open Circuit

523680.03 - Left Drive Pump Forward Solenoid Short To Power

523680.05 - Left Drive Pump Forward Solenoid Open Circuit

523681.03 - Right Drive Pump Forward Solenoid Short To Power

523681.05 - Right Drive Pump Forward Solenoid Open Circuit

523856.05 - Precision Speed Switch Open Circuit

523857.04 - Precision Mode Short To Ground

523858.04 - Inching Mode Short To Ground

523860.05 - Aggressiveness Switch Open Circuit

523861.04 - Aggressiveness Switch A Short To Ground

523862.04 - Aggressiveness Switch B Short To Ground

523863.04 - Aggressiveness Switch C Short To Ground

523864.04 - Aggressiveness Switch D Short To Ground

524073.04 - Left High/Low Solenoid Short To Ground

524073.05 - Left High/Low Solenoid Open Circuit

524074.04 - Right High/Low Solenoid Short To Ground

524074.05 - Right High/Low Solenoid Open Circuit

524075.03 - Flex Load Controller (FLC) Enable Signal Stuck On

524075.05 - Flex Load Controller (FLC) Enable Signal Stuck Off

524083.01 - Six Wheel Drive Charge Pressure Low

524083.03 - Six Wheel Drive Charge Pressure Sensor Short To Power

524084.00 - Six Wheel Drive Loop Oil Temperature High

524084.04 - Six Wheel Drive Loop Oil Temperature Short To Ground

524089.03 - Left Loop Pressure Sensor Short To Power

524089.04 - Left Loop Pressure Sensor Short To Ground

524090.03 - Right Loop Pressure Sensor Short To Power

524090.04 - Right Loop Pressure Sensor Short To Ground

524160.04 - Not Neutral Switch Short To Ground

Group 90: LJ1 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Group 100: LJ2 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Group 110: LJ3 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Group 120: LJ4 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Group 130: RJ1 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Group 140: RJ2 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Group 150: RJ3 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Group 160: RJ4 Diagnostic Trouble Codes

002697.13 - JS Out of Calibration

002697.14 - JS Redundant Sense Failure

002698.13 - JS Out of Calibration

002698.14 - JS Redundant Sense Failure

Section 9005: Operational Checkout Procedure

Group 10: Operational Checkout Procedure

Operational Checkout

Section 9010: Engine

Group 05: Theory of Operation

PowerTech Plus™ 9.0L (6090) John Deere Engine—9.0L Tier 3/Stage IIIA

PowerTech Plus™ 9.0L (6090) John Deere Engine—9.0L Stage II

Cold Weather Start Aid

Soft Start

Engine Speed

Group 15: Diagnostic Information

Engine Identification

PowerTech Plus™ 9.0L (6090) John Deere Engine—9.0L Tier 3/Stage IIIA

PowerTech Plus™ 9.0L (6090) John Deere Engine—9.0L Stage II

Diagnose Observable Machine Symptoms-Level 14 Electronic Fuel System

Engine Cranks/Won't Start

Engine Misfires/Runs Irregularly

Engine Does Not Develop Full Power

Engine Emits Excessive White Exhaust Smoke

Engine Emits Excessive Black Or Gray Exhaust Smoke

Engine Will Not Crank

Engine Idles Poorly

Abnormal Engine Noise

Fuel Supply System Check

Excessive Fuel Consumption

Fuel In Oil

Engine Sampling Port Location

Engine Cooling System Component Location

Engine Fuel System Component Location

Engine Intake and Exhaust Component Location

Group 25: Tests

Fluid Sampling Procedure

Intake Manifold Pressure Test-Turbocharger Boost—9.0L Stage II

Turbocharger Wastegate Actuator Test—9.0L Stage II

Engine Slow and Fast Idle Speed Check

Radiator Temperature Differential Test

Section 9015: Electrical System

Group 05: System Information

Electrical Diagram Information

Electrical Schematic Symbols

Group 10: System Diagrams

Fuse and Relay Specifications

System Functional Schematic, Wiring Diagram, and Component Location Master Legend

System Functional Schematic

JDLink™ System Functional Schematic—MIG/GTT

JDLink™ System Functional Schematic—MTG/SAT

Engine Interface Harness (W9) Component Location—9.0L

Engine Interface Harness (W9) Wiring Diagram

Front 6WD Harness (W10) Component Location

Front 6WD Harness (W10) Wiring Diagram

Rear 6WD Harness (W11) Component Location

Rear 6WD Harness (W11) Wiring Diagram (S.N. —667937)

Rear 6WD Harness (W11) Wiring Diagram (S.N. 667938— )

Heater and Air Conditioner Harness (W12) Component Location

Heater and Air Conditioner Harness (W12) Wiring Diagram

Radio Harness (W13) Component Location

Radio Harness (W13) Wiring Diagram

Cab Roof Harness (W14) Component Location

Cab Roof Harness (W14) Wiring Diagram

Cab Interior Harness (W15) Component Location—6WD

Cab Interior Harness (W15) Wiring Diagram—6WD

Cab Interior Harness (W16) Component Location—Non 6WD

Cab Interior Harness (W16) Wiring Diagram—Non 6WD

Left Front Motor Speed Sensor Harness (W17) Component Location—6WD

Left Front Motor Speed Sensor Harness (W17) Wiring Diagram—6WD

Right Front Motor Speed Sensor Harness (W18) Component Location—6WD

Right Front Motor Speed Sensor Harness (W18) Wiring Diagram—6WD

Blade Impact Harness (W19) Component Location

Blade Impact Harness (W19) Wiring Diagram

Turn-Tail-Stop Light Harness (W20) Component Location

Turn-Tail-Stop Light Harness (W20) Wiring Diagram

Resistor Harness (W21) Component Location

Resistor Harness (W21) Wiring Diagram

Drive-Turn Light Harness (W22) Component Location—Right Front

Drive-Turn Light Harness (W22) Wiring Diagram—Right Front

Drive-Turn Light Harness (W23) Component Location—Left Front

Drive-Turn Light Harness (W23) Wiring Diagram—Left Front

Steering Angle Sensor Harness (W24) Component Location—6WD

Steering Angle Sensor Harness (W24) Wiring Diagram—6WD

Front Platform Harness (W25) Component Location

Front Platform Harness (W25) Wiring Diagram

Rear Platform Harness (W26) Component Location

Rear Platform Harness (W26) Wiring Diagram (S.N. —636526)

Rear Platform Harness (W26) Wiring Diagram (S.N. 636527—667937)

Rear Platform Harness (W26) Wiring Diagram (S.N. 667938— )

Rear Camera Harness (W27) Component Location

Rear Camera Harness (W27) Wiring Diagram

Engine Harness (W29) Component Location—9.0L Tier 3/Stage IIIA

Engine Harness (W29) Wiring Diagram—9.0L Tier 3/Stage IIIA

Engine Harness (W30) Component Location—9.0L Tier 2/Stage II

Engine Harness (W30) Wiring Diagram—9.0L Tier 2/Stage II

Fan Door Harness (W31) Component Location

Fan Door Harness (W31) Wiring Diagram

Engine Work Light Harness (W33) Component Location

Engine Work Light Harness (W33) Wiring Diagram

Midstructure Harness (W34) Component Location

Midstructure Harness (W34) Wiring Diagram

Midstructure Harness (W34) Wiring Diagram (S.N. 667938— )

Transmission Harness (W35) Component Location

Transmission Harness (W35) Wiring Diagram

Tilt Console Harness (W36) Component Location—Standard Controls

Tilt Console Harness (W36) Wiring Diagram—Standard Controls

Tilt Console Harness (W37) Component Location—EH Controls

Tilt Console Harness (W37) Wiring Diagram—EH Controls

Electrohydraulic (EH) Main Cab Harness (W38) Component Location

Electrohydraulic (EH) Main Cab Harness (W38) Wiring Diagram

Electrohydraulic (EH) Main Frame Harness (W39) Component Location

Electrohydraulic (EH) Main Frame Harness (W39) Wiring Diagram

Electrohydraulic (EH) Draft Frame Harness (W40) Component Location

Electrohydraulic (EH) Draft Frame Harness (W40) Wiring Diagram

JDLink™ System Harnesses Component Location—MIG/GTT

JDLink™ System Harnesses Component Location—MTG/SAT

JDLink™ System Wiring Diagrams—MIG/GTT

JDLink™ System Wiring Diagrams—MTG/SAT

Electrohydraulic (EH) Integrated Grade Control (IGC) (W43) Component Location

Electrohydraulic (EH) Integrated Grade Control (IGC) (W43) Wiring Diagram

Right Armrest Harness (W44) Component Location

Right Armrest Harness (W44) Wiring Diagram

Left Armrest Harness (W45) Component Location

Left Armrest Harness (W45) Wiring Diagram

Battery Disconnect Harness (W60) Component Location

Battery Disconnect Harness (W60) Wiring Diagram

Circuit Breaker Harness (W61) Component Location

Circuit Breaker Harness (W61) Wiring Diagram

Flex Load Controller (FLC) Harness (W62) Component Location

Flex Load Controller (FLC) Harness (W62) Wiring Diagram

Starter Harness (W63) Component Location

Starter Harness (W63) Wiring Diagram

Glow Plug/Intake Air Heat Relay Harness (W64) Component Location

Glow Plug/Intake Air Heat Relay Harness (W64) Wiring Diagram

License Plate Harness (W65) Component Location

License Plate Harness (W65) Wiring Diagram

Rear View Camera Display Harness (W67) Component Location

Rear View Camera Display Harness (W67) Wiring Diagram

Group 15: Sub-System Diagnostics

Controller Area Network (CAN) Theory of Operation

Start and Charge Circuits Theory of Operation

Transmission Control Unit (TCU) Circuit Theory of Operation

Engine Control Unit (ECU) Circuit Theory of Operation

Flex Load Controller (FLC) Circuit Theory of Operation

Advanced Display Unit (ADU) Circuit Theory of Operation

Six Wheel Drive (6WD) Controller Circuit Theory of Operation

Park Brake Circuit Theory of Operation

Auxiliary Valve Controller (AVC) Circuit Theory of Operation

Hydraulic Valve Controller (HVC) Circuit Theory of Operation

Group 16: Monitor Operation

Advanced Display Unit (ADU)—Service Mode

Advanced Display Unit (ADU)—Clear Codes

Advanced Display Unit (ADU)—Show/Hide Main Menu

Advanced Display Unit (ADU)—Enable Options

Advanced Display Unit (ADU)—Tire Size

Advanced Display Unit (ADU)—Fan Speed

Advanced Display Unit (ADU)—Articulation Cal

Advanced Display Unit (ADU)—Steering Cal

Advanced Display Unit (ADU)—GP Auxiliary Valve Flows

Advanced Display Unit (ADU)—GP Auxiliary Control Setup

Group 20: References

Cross Slope Diagnostics

Flex Load Controller (FLC) Outputs

Service ADVISOR™ Application

Service ADVISOR™ Connection Procedure

Reading Diagnostic Trouble Codes (DTC) With Service ADVISOR™ Application

JDLink™ System Identification

JDLink™ Connection Procedure—If Equipped

Transmission Control Unit (TCU) Calibration

6WD Controller Calibration (If Equipped)

CAN Circuit Testing

Electrical Component Specifications

Alternator Test

Hydraulic Pump Pressure Sensor Test

Transmission Control and Park Brake Lever Test

Park-Not Neutral Gear Position Switch Module (S6) and Forward/Reverse Switch Module (S5) Test

Output Shaft Speed Sensor Test

Inching Pedal Module Test

Lower Windshield Wiper Proximity Switch Adjustment and Installation

Electrical Component Checks

Articulation Sensor Linkage Adjustment (Rear Steer)

Electrohydraulic Valve Calibration Procedure

Articulation Sensor Calibration Procedure

Steering Angle Sensor Calibration Procedure

Park-Not Neutral Gear Position Switch Module (S6) and Forward/Reverse Switch Module (S5) Remove and Install

Controller Remove and Install

Steering Angle Sensor Remove and Install

Replace Weather Pack™ Connector

Install Weather Pack™ Contact

Replace DEUTSCH® Connectors

Replace DEUTSCH DEUTSCH is a trademark of Deutsch Co. Rectangular or Triangular Connectors

Install DEUTSCH® Contact

Replace (Pull Type) Metri-Pack™ Connectors

Replace (Push Type) Metri-Pack™ Connectors

Replace CINCH CINCH is a trademark of the Cinch Co. Connectors

Install CINCH CINCH is a trademark of the Cinch Co. Contact

Repair 32 and 48 Way CINCH CINCH is a trademark of the Cinch Co. Connectors

Section 9016: Six Wheel Drive (6WD)

Group 05: Theory of Operation

6WD System Operation

6WD Pump and Displacement Control Operation

6WD Forward Operation

6WD Pump and Motor Flushing Pump Operation

6WD Charge Circuit Operation

Flushing Valve and Operating Charge Pressure Regulating Valve Operation

6WD Circuit Relief and Make-Up Valve Operation

6WD Engagement Manifold Operation

6WD Motor Operation

6WD Wheel Operation

6WD Precision Mode Operation

6WD Inching Mode Operation

Group 15: Diagnostic Information

6WD System Schematic

6WD System Component Location

No Front Wheel Motion (Both Wheels)

No Front Wheel Motion During Inching Operation (Both Wheels)

No Front Wheel Motion (One Wheel)

Intermittent or Erratic 6WD Operation

6WD Charge Pressure Indicator Light On

Hydraulic Oil Filter

Hydraulic Oil Temperature Indicator Light On

6WD System Oil Temperature Too Hot (6WD oil temperature indicator light on)

Low Torque (One Wheel)

Low Torque (Both Wheels)

Wheel Overspeed (One Wheel)

Operates in Low Speed Only (One Wheel)

Operates in High Speed Only (One Wheel)

Wheel(s) Will Not Stay in Neutral

Operates in One Direction Only

Wheels Rotate Opposite Each Other

6WD Will Not Calibrate (No Diagnostic Trouble Codes)

Group 20: Adjustments

6WD Start-Up Procedure

6WD Pump Control Neutral Adjustment

Group 25: Tests

Avoid High-Pressure Fluids

6WD Oil Warm-Up Procedure

6WD Planetary Brake Leakage Test

6WD Neutral Charge Pressure Test

6WD Neutral Charge Pressure Regulating Valve Test

6WD Operating Charge Pressure Regulating Valve Test

6WD Neutral Charge Pressure Balance Test

6WD Motor Leakage Test

Pressure Override Valve and 6WD Circuit Relief and Make-Up Valve Test

6WD Motor Flushing Pump Relief Valve Test

6WD Charge Pump Flow Test

6WD Engagement Solenoid Valve Test

Hydraulic Oil Cooler Bypass Valve Pressure Test

Section 9020: Power Train

Group 05: Theory of Operation

DF230 Transmission Operation

Differential Lock Operation

Internal Park Brake Operation

Rear Axle and Tandem Operation

Group 15: Diagnostic Information

Power Train Schematic

Power Train Component Location

Transmission Overfills With Oil

Transmission Slippage

Machine “Jumps” When Inching Pedal Engaged

Machine Lacks Power Or Moves Slow

Transmission Shifts Too Slow (Machine Stops When Changing Gears Under Load)

Transmission Shifts Too Quickly

Machine Will Not Move In Any Gear and Park Brake Indicator Light Is On (No Load Put On Engine When Shifted Into Gear)

Machine Will Not Move (Load Put On Engine Or Engine Stalls When Shifted Into Gear)

Low Pressure In Different Gears Using Same Proportional Solenoid Valve

Machine Creeps In Neutral (Load Put On Engine When Service Brakes Are Applied)

Machine Creeps In Gear With Inching Pedal Fully Depressed

Transmission System Overheats

Transmission Control and Park Brake Lever Does Not Move Freely

Excessive Transmission Noise (Under Load or No Load)

Transmission Engages In a Gear, but Not Gear Selected

Transmission Fails To Change Gear From First Gear Selected

Transmission Faults To Neutral

Excessive Machine Vibration

Erratic Transmission Oil Pressure

Excessive Oil Pressure

Low Oil Pressure In All Gears

Low Pressure In One Gear But Correct In Other Gears

Transmission Breather Oil Leakage

Filter Or Filter Oil Lines Blow Out

Low Lube Pressure In Some Gears But Correct In Other Gears

Excessive Lube Pressure In Some Gears But Correct In Other Gears

Low Transmission Cooler Inlet Pressure And Lube Pressure

Park Brake Engages While Vehicle Is Moving

Park Brake Will Not Release

Park Brake Will Not Hold

Park Brake Overheats

Park Brake Noisy

No Differential Lock Operation

Differential Lock Slippage

Excessive Differential and/or Axle Noise

Group 25: Tests

Differential Oil Warm-Up Procedure

Differential Lock Valve Pressure Test

Differential Oil Cooler Flow Test

Differential Oil Cooler Relief Valve Pressure Test

Park Brake Release Pressure Test

Section 9025: Hydraulic System

Group 05: Theory of Operation

Hydraulic System Operation

Hydraulic Pump Operation (S.N. —667937)

Hydraulic Pump Operation (S.N. 667938— )

Hydraulic Fan Pump Operation

Hydraulic System Manifold Operation

Control Valve Operation—Standard Controls

Control Valve Operation—EH Controls

Hydraulic Oil Filter Operation

System Relief Valve Operation

Circuit Relief Valve Operation

Service Brake Valve Operation

Service Brake Accumulator Operation

Hydraulic Fan Drive Operation

Steering System Operation

Steering System Operation—EH Controls

Load Sense Operation With All Functions in Neutral

Load Sense Operation With One Function Activated

Load Sense Operation With Multiple Functions Activated

Wheel Lean, Articulation, Circle Side Shift, Blade Pitch, and Blade Side Shift Valve Operation

Circle Rotate Valve Operation

Saddle Locking Pin Valve Operation

Blade Lift and Auxiliary Valve Operation

Blade Impact Absorption System Operation

Circle Drive Gearbox Operation-Without Slip Clutch

Circle Drive Gearbox Operation-With Slip Clutch

Hydraulic Oil Cooler Bypass Manifold Operation

Group 15: Diagnostic Information

Hydraulic System Schematic

Hydraulic System Schematic—EH Controls

Hydraulic System Component Location

Hydraulic System Component Location—EH Controls

No Hydraulics

Hydraulic System Overheats

Slow Hydraulic Functions

Hydraulic Function (or Pump) Makes “Chattering” Noise

Pump Appears To Be Stuck At Minimum Displacement

Pump Appears To Be Stuck At Maximum Displacement

Function Moves Too Fast

Function Drifts Down

Excessive Effort to Move Function Control Lever

Individual Function Is Slow (Cycle Time Checked Slow)

Slow or Hard Steering

No Steering

Erratic Steering

Excessive Steering Wheel Turns to Steer Machine

Wheels Move After Steering Wheel Stopped

Excessive Vibration of Steering Wheel

Steering Wheel Kickback

Poor or No Brakes (Steering and Hydraulic System Operation Normal)

Aggressive Brakes or Brakes Lock Up

Brakes Drag

Brakes Chatter or Noisy

Delay in Braking

Hydraulic Fan Does Not Reach Full Speed

Hydraulic Fan Runs At Full Speed Only

Hydraulic Fan Does Not Spin

Hydraulic Fan Will Not Reverse Direction

Group 25: Tests

Fluid Sampling Procedure—If Equipped

Hydraulic Test Port Location

JT02156A Digital Pressure/Temperature Analyzer Kit Installation

JT07148 Digital Hydraulic Flowmeter Tester

Hydraulic Oil Warm-Up Procedure

Vacuum Pump Installation

Hydraulic Pump Standby Pressure & Load Sense Standby Pressure Test

Load Sense Relief Valve & Pump Relief Test

Load Sense Shuttle Valve Isolation Test—Standard Controls

Load Sense Shuttle Valve Isolation Test—EH Controls

Hydraulic Pump Leakage Test

Hydraulic Pump Flow Test

Service Brake Valve Pressure Test

Service Brake Accumulator Precharge Test

Service Brake Pressure Switch Test

Service Brake Valve Leakage Test

Hydraulic Cylinder Drift Test

Hydraulic Cylinder Leakage Test

Rotary Manifold Leakage Test

Steering System Leakage Test

Service Brake Accumulator Inlet Check Valve Leakage Test

Blade Impact Absorption Accumulator Charge Pressure Test

Blade Impact Absorption Accumulator Hydraulic Discharge Procedure

Secondary Steering Accumulator Charge Pressure Test

Blade Lift Relief Valve Test

Circuit Relief Valve Test—Midmount Scarifier

Saddle Locking Cylinder Pressure Reducing Valve Test

System Relief Valve Pressure Test

Hydraulic Fan Pump Pressure Test

Hydraulic Fan Motor Speed Test

Hydraulic Fan Pump Flow Test

Hydraulic Fan Motor Case Drain Test

Section 9031: Heating and Air Conditioning

Group 05: Theory of Operation

Air Conditioning System Cycle Of Operation

Group 15: Diagnostic Information

Air Conditioner and Heater Component Location

Diagnose Air Conditioning System Malfunctions

Air Conditioning System Does Not Operate

Air Conditioner Does Not Cool Interior of Cab

Air Conditioner Runs Constantly, Too Cold

Diagnose Heater System Malfunctions

Heater System Does Not Operate

Heater Does Not Warm Interior of Cab

Interior Windows Continue to Fog

Group 20: Adjustments

Heater Control Cable Adjustment

Defog-Defrost Cable Adjustment

Group 25: Tests

Refrigerant Cautions and Proper Handling

Air Conditioner and Heater Operational Checks

Refrigerant Leak Test

Air Conditioner Compressor Clutch Test

Air Conditioner High/Low Pressure Switch Test

Air Conditioner Freeze Control Switch Test

Heater Blower Switch Test

Heater Blower Resistor Test

Heater Blower Motor Test

R134a Air Conditioning System Test

Operating Pressure Diagnostic Chart

John Deere Motor Graders 870G, 870GP, 872G, 872GP Operation and Test Service Manual (TM11208)