General Information
This hydraulic system includes the following systems:
- Hydraulic tank ( Torque Converter, Hoist, Brake, and Transmission)
- Hoist
- Torque converter
- Brakes and brake cooling
The hydraulic tank and the body hoist system are covered in this module.
For information about the torque converter, see Systems Operation, "785D Off-Highway Truck Power Train ".
For more information about the brakes and about brake cooling, see Systems Operation/Testing and Adjusting, "785D Off-Highway Air System and Brakes".
The steering hydraulic system is separate from other hydraulic systems.
For information about the steering system, see Systems Operation/Testing and Adjusting, "785D Off-Highway Truck Steering System".
Caterpillar Information System:
AP655D Asphalt Paver Machine Systems Hydraulic Schematic (Auger and Conveyor System)
785D OEM Off-Highway Truck Hydraulic System Gear Pump (Torque Converter and Parking Brake Release)
R1700G Load Haul Dump Indicators
2008/04/07 Correction to Systems Operation Troubleshooting Testing and Adjusting , "System Schematic" {1400, 4800, 7566}
2008/06/09 Correction to Systems Operation Troubleshooting Testing and Adjusting , "MID 081 - CID 0638 - FMI 06" {1467}
R1700G Load Haul Dump Braking System Brake Release System
Procedure to Rework Loader Buckets for Use with Fusion Couplers {6001, 6129, 6434} Procedure to Rework Loader Buckets for Use with Fusion Couplers {6001, 6129, 6434}
R1700G Load Haul Dump Hydraulic System Ride Control System
R1700G Load Haul Dump Hydraulic System Main Hydraulic System
AP655D Asphalt Paver Screed Adjustment
R1700G Load Haul Dump Additional Messages
2007/12/17 A New Hose Updates the Transmission Oil Lines {3016, 3154}
938H Wheel Loader and IT38H Integrated Toolcarrier Power Train Features
450E Backhoe Loader Hydraulic and Steering System Gear Pump (Implement)
797F Off-Highway Truck Power Train Relief Valve (Transmission Main) - Assemble
IT38H Integrated Toolcarrier and 938H Wheel Loader Transmission Electronic Control System MID 081 - CID 0368 - FMI 02
IT38H Integrated Toolcarrier and 938H Wheel Loader Transmission Electronic Control System MID 081 - CID 0590 - FMI 14
AP655D Asphalt Paver Machine Systems Conveyor Speed (Auger) - Check
785D OEM Off-Highway Truck Air System and Brakes Hydraulic Tank (Torque Converter, Hoist, Brake, and Transmission)
120M and 12M Motor Grader Machine Systems Control Valve (Brake) - Remove
120M and 12M Motor Grader Machine Systems Control Valve (Brake) - Install
2008/01/21 A New Lubricator for the Air Starting Motor is Available {1451}
797F Off-Highway Truck Power Train Screen (Transmission Scavenge) - Remove and Install
IT38H Integrated Toolcarrier and 938H Wheel Loader Transmission Electronic Control System Switch Circuits