Komatsu Loader WB142-5 Service Manual

Product Overview

The Komatsu Loader WB142-5 Service Manual provides detailed information on the machine’s dimensions, performance specifications, and component functionalities. This comprehensive guide includes essential procedures for maintenance, troubleshooting, and component disassembly and reassembly.

Table of Contents

• General Information
• Structure, Function, and Maintenance
• Standard Values
• Testing, Adjusting, and Troubleshooting
• Disassembly and Assembly

Key Features

• General Information: Covers machine dimensions, performance specs, component weights, and fuel, coolant, and lubricant specifications.
• Structure and Function: Detailed explanations of component operations and reference material for effective troubleshooting.
• Testing and Adjusting: Includes pre- and post-repair checklists, necessary adjustments, and troubleshooting charts linking problems to causes.
• Disassembly and Assembly: Step-by-step instructions for assembling and disassembling components, including important safety precautions.

Benefits

• Enhances understanding of the machine’s components and operations.
• Comprehensive troubleshooting and repair guidance improves maintenance efficiency.
• Reduces downtime with organized step-by-step procedures.

Usage Recommendations

• Always follow safety precautions when working with components under pressure.
• Maintain proper labeling when disconnecting hoses to prevent confusion and contamination.
• Release all hydraulic pressure before commencing disassembly operations.

Backhoe Control Valve Procedures

Removal Instructions

• Center and unlock the backhoe plate, lower the outriggers, and rest the bucket on its back.
• Activate the parking brakes, turn off the engine, and remove the key.
• Operate hydraulic controls in all directions to release residual pressure.
• Remove screws and the control pedal for the hammer (if installed).
• Remove the floor cover and disconnect hoses and hydraulic lines. Ensure all hoses are properly marked.
• Immediately plug pipes and hoses to avoid contamination.
• Disconnect the solenoid valve connector and control valve links.