Gehl Z55, Mustang 550Z Compact Excavator Repair Service Manual
Key Chapters and Highlights
- General Cautions for Maintenance Work:
- Includes safety precautions, proper preparation, and handling instructions for hydraulic equipment, seals, and hoses.
- Emphasizes correct disassembly and reassembly techniques to prevent damage.
- Technical Data:
- Details machine specifications, weight distribution, lifting capacities, and working area dimensions.
- Provides hydraulic circuit schematics, wiring diagrams, and lubricant recommendations.
- Outlines periodic inspection and servicing schedules.
- Service Standards:
- Contains performance standards for the engine, hydraulic systems, and undercarriage.
- Includes tightening torque values for various components and pressure adjustment guidelines for hydraulic fittings.
- Lists nominal and allowable values for critical machine components.
- Engine:
- Covers detailed servicing procedures, including valve clearance adjustments, EGR system servicing, and crankshaft maintenance.
- Includes guidance on fuel, cooling, and lubrication systems, as well as turbocharger maintenance.
- Provides troubleshooting charts and wiring diagrams for engine components.
- Electric System:
- Layout and function of electrical components, including LCD monitors and alarm systems.
- Details electronic control systems for start/stop operations, auto deceleration, and eco modes.
- Includes error code lists and troubleshooting techniques.
- Hydraulic System:
- Detailed circuit operations for boom, arm, bucket, swing, and blade functions.
- Instructions for simultaneous operation scenarios and optional systems such as quick couplers and hydraulic P.T.O.
- Maintenance and repair procedures for pumps, valves, and motors.
- Adjustment and Repair:
- Removal and reinstallation instructions for key components like the engine, undercarriage, and cabin.
- Procedures for repairing hydraulic cylinders, swivel joints, and the diesel particulate filter (DPF).
- Provides detailed layouts and diagrams for piping and jigs.
- Troubleshooting:
- Diagnostic guides for common issues, such as bucket release, arm movement irregularities, and travel motor thermal shocks.
- Quick reference tables for identifying and addressing breakdown causes.
- Instructions for resolving hydraulic oil fluctuations and quick coupler operation issues.
