Service Record
Setup Procedure
Complete the following procedures before testing the all wheel drive system:
- Ensure that the all wheel drive piston motors are full of hydraulic oil.
- The motor grader is in first gear forward.
- The all wheel drive piston motors are operating properly.
- All faults are cleared from the all wheel drive electronic control module.
- Ensure that the front wheels will stop, when the transmission modulator pedal is depressed.
Initial Test For The All Wheel Drive System
Show/hide table
| All Wheel Drive Control in the AUTOMATIC Position | ||
| All wheel drive control | ON | |
| OFF | ||
| Position of the torque control lever | Maximum |
|
| Minimum | ||
| Purge pressure at low idle | 2000 ± 70 kPa (290 ± 10 psi) |
|
| Charge pressure at high idle | 3000 ± 70 kPa (435 ± 10 psi) |
|
| Forward pressure (record) |
Show/hide table
| All Wheel Drive Control in the MANUAL Position | ||
| All wheel drive control | ON | |
| OFF | ||
| Position of the torque control lever | Maximum | |
| Minimum | ||
| Purge pressure at low idle | 2000 ± 70 kPa (290 ± 10 psi) |
|
| Charge pressure at high idle | 3000 ± 70 kPa (435 ± 10 psi) |
|
| Forward pressure (record) | ||
Road Test For All Wheel Drive Motor Graders
before testing, warm the hydraulic oil. The oil must be at a minimum temperature of 60°C (140°F).
Show/hide table
| Set purge pressure (All wheel drive control in the OFF position) | 2000 ± 70 kPa (290 ± 10 psi) |
| Set purge pressure (All wheel drive control in the ON position) | 3000 ± 70 kPa (435 ± 10 psi) |
Show/hide table
| Gear | Idle | Position Of The Torque Control Lever | All Wheel Drive Control | Pressure | Pressure (record) |
| First forward | High | Minimum | Automatic | 6550 ± 1050 kPa (950 ± 150 psi) |
|
| First forward | High | Maximum | Automatic | 7200 ± 1700 kPa (1050 ± 250 psi) |
|
| First forward | High | Minimum | Manual | 5500 ± 700 kPa (800 ± 100 psi) |
|
| First forward | High | Maximum | Manual | 35200 ± 700 kPa (5100 ± 100 psi) |
|
| Fourth forward | High | Maximum | Manual | 33800 ± 2100 kPa (4900 ± 300 psi) |
|
| Fourth forward | High | Minimum | Manual | 5500 ± 700 kPa (800 ± 100 psi) |
|
| Fifth forward | High | Minimum | Manual | 5500 ± 700 kPa (800 ± 100 psi) |
|
| Fifth forward | High | Maximum | Manual | 35200 ± 700 kPa (5100 ± 100 psi) |
|
| Seventh forward | High | Minimum | Manual | 7900 ± 350 kPa (1150 ± 50 psi) |
|
| Eighth forward | High | Minimum | Manual | 0 kPa (0 psi) |
|
| First reverse | High | Minimum | Automatic | 5500 ± 700 kPa (800 ± 100 psi) |
|
| First reverse | High | Maximum | Automatic | 6550 ± 1700 kPa (950 ± 250 psi) |
|
| First reverse | High | Minimum | Manual | 5500 ± 700 kPa (800 ± 100 psi) |
|
| First reverse | High | Maximum | Manual | 35200 ± 700 kPa (5100 ± 100 psi) |
|
| Third reverse | High | Maximum | Manual | 35200 ± 700 kPa (5100 ± 100 psi) |
Show/hide table
| Gear | Idle | Torque Control Lever | All Wheel Drive Control | Charge Pressure | Charge Pressure (record) |
| Eighth forward | High | Minimum | Manual | Charge Pressure 2400 ± 350 kPa (350 ± 50 psi) |
|
| Neutral | Low | Minimum | Off | Charge pressure 2000 ± 70 kPa (290 ± 10 psi) |
|
| Third reverse | High | Maximum | Manual | Charge pressure 3000 ± 70 kPa (435 ± 10 psi) |
|
| Neutral | Low | Minimum | Off | Charge pressure 2000 ± 70 kPa (290 ± 10 psi) |
Check the all wheel drive system for any hydraulic oil leaks. Check the all wheel drive electronic control module for any logged faults.
Caterpillar Information System:
5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) CID 0425 FMI 03 Pressure Sensor (Front Brake Oil) Voltage Above Normal - Test
3306C Engines for Caterpillar Built Machines Flywheel Housing
836G Landfill Compactor and 834G Wheel Dozer Light Switches
550 Wheel Harvester, 570 Wheel Harvester and 580 Wheel Harvester Hydraulic System Solenoid Valve (Signal Cutoff)
784C and 785C Off-Highway Trucks Machine Systems Tire and Rim (Front) - Remove and Install
5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) CID 0379 FMI 03 Pressure Sensor (Automatic Lubrication) Voltage Above Normal - Test
836G Landfill Compactor and 834G Wheel Dozer Differential Thrust Pin Clearance - Check
5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) CID 0280 FMI 03 Temperature Sensor (Pump Drive) Voltage Above Normal - Test
IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Piston Pump (Hydrostatic)
CB-534C Vibratory Compactor Drum Scrapers - Inspect/Adjust/Replace
5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) CID 0279 FMI 03 Temperature Sensor (Front Aftercooler Coolant) Voltage Above Normal - Test
836G Landfill Compactor and 834G Wheel Dozer Crankshaft Vibration Damper - Inspect
980G Wheel Loader Power Train Transmission Hydraulic Control Valve - Assemble
5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) CID 0426 FMI 03 Pressure Sensor (Rear Brake Oil) Voltage Above Normal - Test
550 Wheel Harvester, 570 Wheel Harvester and 580 Wheel Harvester Hydraulic System Pressure Reducing Valve (Color Marking System)
5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) CID 0427 FMI 03 Temperature Sensor (Front Axle Oil) Voltage Above Normal - Test
IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Hydraulic Oil Filter
769D Off-Highway Truck and 771D Quarry Truck Engine Oil Level - Check
784C, 785C and 785C HAA Off-Highway Truck/Tractors Hydraulic System Hydraulic System Schematic
769D Off-Highway Truck and 771D Quarry Truck Engine Oil and Filter - Change
950G Series II Wheel Loader, 962G Series II Wheel Loader and IT62G Series II Integrated Toolcarrier Power Train Differential Backlash and Bearings - Adjust
769D Off-Highway Truck and 771D Quarry Truck Engine Valve Lash and Bridge - Check
3304B and 3306B Engines for Caterpillar Built Machines Fuel Priming Pump - Remove and Install
IT14G Integrated Toolcarrier and 914G Wheel Loader Power Train Duo-Cone Conventional Seals - Install