Komatsu Excavator: Comprehensive User Manual

Product Overview

This guide provides detailed insights into the operation, maintenance, and repair of the Komatsu Excavator. It is structured to help understand each component’s functionality and improve equipment handling and troubleshooting processes.

Table of Contents

• Engine
• Power Train
• Undercarriage
• Hydraulic System
• Work Equipment
• Electrical System

General Information

This section outlines the machine’s dimensions, performance specifications, and component weights. Additionally, it provides charts for fuel, coolant, and lubricant specifications, which are crucial for efficient operation and maintenance of the excavator.

Structure, Function, and Maintenance Standard

Learn about the structure and function of each part of the Komatsu Excavator. This section enhances understanding and serves as a vital reference for troubleshooting purposes, helping you maintain the machine in optimal condition.

Testing, Adjusting, and Troubleshooting

Guidelines on pre- and post-repair checks, necessary adjustments after repairs, and troubleshooting are provided. Troubleshooting charts correlate common problems to specific causes, aiding in swift diagnosis and rectification.

Disassembly and Assembly Instructions

This section offers a step-by-step guide to safely removing, installing, disassembling, or assembling components. It also includes precautions to be taken during these operations, ensuring both safety and efficiency.

Bleeding Air from Fuel Circuit

Proper air bleeding is crucial when parts of the fuel circuit are manipulated, or if the engine experiences a fuel shortage. Follow these steps:

• Ensure sufficient fuel is available in the tank.
• Move the engine starting switch to the ON position and keep it there for 10 to 20 seconds to activate the fuel feed pump. This process automatically bleeds air from the fuel circuit.
• Switch the engine starting mechanism to the START position to initiate the engine. If the engine fails to start, repeat the second step.