Komatsu WA400-1 Wheel Loader Shop Manual
Troubleshooting, parts diagrams, and service data for Komatsu WA400-1 wheel loaders, including engine, power train, and hydraulics. Publication C4085-91017.
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Sample pages from the Komatsu WA400-1 Wheel Loader Shop Manual manual
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Models Covered & Key Technical Specifications
Professional Diagnostic Wiring Manual: Wheel Loader Shop-Grade Manual for Komatsu WA400-1 Wheel Loaders Parts-Reference Machine-Range: WA400-1, WA400 / Komatsu Limited (1990-2005) // Coverage-Scope: Complete for all models and serial numbers // Assembly-Group: Transmission, Engine, Hydraulics, Steering
- Published Native Resolution: 1920 x 1080 provides the optimal viewing experience for complex diagrams.
- Specific Clamp Forces: For precise assembly, 30 Nm establishes the standard tightening torque for critical components.
- Integral Fluid Levels: For optimal lubrication, 25 L denotes the total system capacity.
- Operational Wattage Specs: The hydraulic pump requires 75 kW to deliver sufficient flow for all functions.
- Established Cold Start Limits: For reliable operation in low temperatures, the engine is designed to start at -20°C.
- Authorized Scan Resolution: 600 dpi ensures clarity for all diagnostic trouble codes and system readouts.
Manual Description & Preview
Professional Diagnostic Wiring Manual: Wheel Loader Shop-Grade Manual for Komatsu WA400-1 Wheel Loaders Parts-Reference
Machine-Range: WA400-1, WA400 / Komatsu Limited (1990-2005) // Coverage-Scope: Complete for all models and serial numbers // Assembly-Group: Transmission, Engine, Hydraulics, Steering
| Assessment-Parameter | System-Path | Validation-Data |
|---|---|---|
| Overall Weight | Chassis | 17,840 kg |
| Max. Bucket Capacity | Work Equipment | 3.1 m³ |
| Max. Travel Speed | Drivetrain | 11.9 km/h |
| Engine Power | SA6D110-1 | 197 HP |
| Max. Traction Force | Drivetrain | 16,000 kg |
Technical units are distributed across the following major sections:
Engine Section
This section details the engine's structure, function, testing, adjustment, disassembly, and assembly. It includes specifications and diagrams for the Komatsu SA6D110-1 engine.
Power Train Section
Covers the structure and function of the power train, including the torque converter, transmission, and transfer systems. Testing and adjustment procedures are also provided.
Steering System Section
Explains the components and operation of the steering system, including testing and adjustment procedures.
Brake and Air System Section
Documents the structure, function, testing, and adjustment of the brake and air systems.
Hydraulic System
This manual documents torque specifications for critical hydraulic components to ensure proper vibration dampening and system integrity.
Others
Includes information on the gear pump and other miscellaneous components and systems.
This shop manual provides essential information for the maintenance and repair of the Komatsu WA400-1 wheel loader.
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