Gehl Z80 Gen 2, Mustang 800Z Nxt 2 Compact Excavator Repair Manual

Service Repair Manual: 760 Pages
Operators Manual: 338 Pages
Parts Manual: 332 Pages
Manuals: Service Repair Manual & Operators Manual and Parts Manual
Key Chapters and Highlights
1. General Cautions for Maintenance Work
Safety Precautions: Emphasizes correct maintenance practices to ensure safety and prevent damage.
Handling Hydraulic Systems: Covers proper methods for handling hydraulic equipment, piping, seals, and hoses.
Specifications: Includes specifications for hydraulic hoses and guidelines for air release in hydraulic systems.
2. Technical Data
Specifications and Dimensions: Includes machine specifications, weight distribution, lifting capacities, and working area dimensions.
Hydraulic and Wiring Diagrams: Provides schematic layouts for hydraulic circuits and electrical systems.
Maintenance Schedule: Recommends periodic inspection, servicing, and lubricants.
3. Service Standards
Performance Standards: Covers performance benchmarks for the engine, hydraulic systems, and undercarriage.
Tightening Torques: Lists torque specifications for bolts, nuts, and hydraulic fittings.
Pressure Adjustments: Includes procedures for adjusting relief valves and brake valves.
4. Engine
Servicing Procedures: Detailed steps for servicing the engine, including valve adjustments, cylinder head work, and crankshaft maintenance.
EGR System and DPF: Covers emission control systems like the exhaust gas recirculation (EGR) system and diesel particulate filter (DPF) maintenance.
Cooling and Lubrication Systems: Instructions for maintaining coolant pumps, oil pumps, and checking oil pressure.
Troubleshooting: Provides troubleshooting guides for common engine issues.
5. Electric System
Electrical Components Layout: Details the location and function of electrical parts, including LCD monitors and alarm systems.
Electronic Controls: Covers start/stop controls, engine ECU, and hydraulic ECU systems, including SMARTASSIST DIRECT (SA-D) functionality.
Error Codes: Includes a comprehensive list of error codes and diagnostic tools.
6. Hydraulic System
Circuit Operations: Explains the hydraulic functions for boom, arm, bucket, blade, swing, and travel systems.
Pump and Valve Maintenance: Details servicing hydraulic pumps, control valves, and solenoid valves.
Simultaneous Operations: Explains the handling of complex operations like combined boom and swing actions.
Troubleshooting: Diagnoses common hydraulic system issues.
7. Adjustment and Repair
Component Removal and Reinstallation: Guides for key components, including the engine, hydraulic pump, and cabin.
Undercarriage Maintenance: Covers crawler removal, travel motor servicing, and reassembly of idlers and rollers.
Hydraulic Cylinder Repair: Provides detailed instructions for disassembling, reassembling, and inspecting hydraulic cylinders.
Air Conditioning: Includes steps for removing and reinstalling air conditioning systems.
8. Troubleshooting
Non-Breakdown Issues: Addresses minor operational problems like bucket release and arm movement irregularities.
Quick Reference Tables: Offers tables for diagnosing and resolving common machine issues.