Gehl Z80, Mustang 800Z Compact Excavator Repair Service Manual
Key Highlights by Chapter
1. General Cautions for Maintenance Work
- Safety Guidelines: Covers correct work procedures, preparation, and safety precautions.
- Hydraulic System Handling: Includes cautions for disassembling and installing hydraulic components, piping, seals, and hoses.
- Air Release: Procedures for hydraulic equipment air release are detailed.
2. Technical Data
- Specifications: Provides machine specifications and performance parameters.
- Diagrams: Includes hydraulic and wiring diagrams for US and AS/NZ specifications.
- Maintenance: Recommends periodic inspection and servicing with recommended fuel, oil, and grease.
3. Service Standards
- Machine and Engine Performance: Establishes benchmarks and tolerances.
- Torque Values: Specifies tightening torques for machine and hydraulic fittings.
- Pressure Adjustments: Includes relief valve and brake valve adjustments.
4. Engine
- Servicing Procedures: Step-by-step instructions for engine maintenance, including valve adjustments and emission systems like the EGR.
- Fuel and Lubrication Systems: Explains fuel system components, injection pump servicing, and lubrication checks.
- Cooling System: Covers pump servicing, coolant checks, and troubleshooting.
- Electrical Components: Includes alternator, starter motor, and ECU servicing.
5. Electric System
- Electrical Layout: Shows the parts layout of electrical components, including LCD monitors and alarm systems.
- Electronic Controls: Explains engine and hydraulic ECUs, along with error code diagnosis.
- Wiring: Offers a detailed wiring diagram and safety precautions.
6. Hydraulic System
- Operation Details: Describes the hydraulic circuits for boom, arm, bucket, blade, swing, and travel systems.
- Component Maintenance: Covers troubleshooting, disassembly, and reassembly of pumps, valves, and motors.
- Simultaneous Operations: Explains multi-action hydraulic functionality like boom and bucket simultaneous use.
7. Adjustment and Repair
- Component Removal and Installation: Details procedures for the engine, hydraulic systems, and undercarriage components.
- Cabin Repairs: Includes steps for cabin removal, reinstallation, and window/door glass replacement.
- Hydraulic Cylinder Servicing: Provides instructions for disassembly and reassembly.
- Air Conditioning: Guides on air conditioner removal and reinstallation.
8. Troubleshooting
- Non-Breakdown Issues: Diagnoses minor operational issues such as bucket release and time lag in travel speed switching.
- Quick Reference Tables: Simplifies troubleshooting for common machine faults.
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