Komatsu HM400-2 Dump Truck Service Manual Overview

Product Overview

This comprehensive service manual for the Komatsu HM400-2 Dump Truck provides detailed information essential for operating, maintaining, and troubleshooting the vehicle. It includes critical specifications, performance parameters, maintenance guidelines, and troubleshooting procedures to ensure optimal performance and longevity of the vehicle.

Table of Contents

• Index and Foreword
• Specification
• Structure, Function, and Maintenance Standard
• Standard Value Table
• Testing and Adjusting
• Troubleshooting
• Disassembly and Assembly
• Diagrams and Drawings

General Information

This section provides a comprehensive overview of the general machine dimensions, performance specifications, and component weights. It also includes detailed charts for fuel, coolant, and lubricant specifications.

Structure, Function, and Maintenance Standard

A detailed examination of each component’s structure and function is provided here. This section serves as both a technical guide and a reference to aid in troubleshooting and routine maintenance.

Testing, Adjusting, and Troubleshooting

Within this section, users will find important checks to perform before and after repairs, as well as necessary adjustments post-repair. Troubleshooting charts that match common problems with their causes are also included, offering a methodical approach to diagnostics.

Disassembly and Assembly

Clear instructions on the sequence for removing, installing, disassembling, or assembling each component are provided. Emphasizing safety, this section details necessary precautions to ensure successful component handling.

Fuel System Safety Precautions

• Low-pressure Circuit: Feed pump u2192 Fuel filter u2192 Fuel supply pump
• High-pressure Circuit: Fuel supply pump u2192 Common rail u2192 Fuel injector

Note: The pressure within both circuits automatically drops to a safe level 30 seconds after the engine stops. Before testing or handling fuel system components, ensure residual pressure is fully released by waiting for at least 30 seconds after stopping the engine. Avoid immediate operation to ensure safety due to potentially remaining pressure in the fuel circuit.