TM12873
John Deere 75G Excavator Operation & Test Technical Manual
Table of Contents Overview:
General Information & Safety
- Safety guidelines and best practices
- Operator precautions and emergency procedures
- Proper recycling and disposal of fluids
- Exhaust filter ash handling and disposal
Diagnostics & Troubleshooting
- Main Controller (MCZ) and Engine Control Unit (ECU) fault codes
- CAN communication circuit diagnostics
- Pressure sensor and solenoid valve troubleshooting
- Electrical system monitoring and alternator faults
Operational Checkout Procedures
- Key switch OFF, Engine OFF checks
- Key switch ON, Engine ON operational tests
- Blade function, travel mode, and swing performance evaluations
John Deere 75G Excavator Operation & Test Technical Manual
Engine System
- Yanmar engine operation and diagnostics
- Fuel injection system component location and testing
- Cooling system pressure checks and thermostat diagnostics
- Engine speed control operation and adjustments
Electrical System
- Wiring schematics, fuse locations, and relay diagnostics
- Battery, alternator, and starter motor testing
- Controller Area Network (CAN) system operation
- Monitor controller error code analysis
Power Train
- Track adjuster and recoil spring operation
- Travel motor speed circuit diagnostics
- Propel motor hydraulic function testing
Hydraulic System
- Pilot system operation and pressure regulation
- Hydraulic pump regulator adjustments and flow tests
- Control valve troubleshooting and performance checks
- Travel and swing motor speed calibration
Heating & Air Conditioning System
- Cab air circulation and ventilation troubleshooting
- Air conditioning compressor and refrigerant testing
- Cab heating element and blower motor diagnostics
John Deere 75G Excavator Operation & Test Technical Manual TM12873