Maintenance and Safety Manual

Table of Contents

1. General Safety Information
2. Safety Precautions
3. Index
4. Specification
5. Maintenance
6. System Overview
7. Disassembly Instructions
8. Troubleshooting Guide
9. Engine Information

Manual Extract: Upper Slewing Structure Check

Ensure all components and sliding mechanisms are inspected for optimal performance. Follow these steps for a thorough evaluation:

• Inspect each part’s surface for any burrs, scratches, dents, or other imperfections.
• Verify that the valve housing’s seal groove surface is smooth and free from dust, dents, rust, and similar defects.
• Address any dents or flaws on the valve housing’s seat surface through lapping, ensuring no lapping compound remains inside the valve.
• Ensure all sliding and fitting parts move effortlessly and that grooves and passages are not contaminated.
• Replace any damaged or deformed springs with new ones to maintain function.
• In cases where the relief valve is not operating smoothly, replace it as part of the assembly.
• Substitute all seals, wipers, and O-rings with new components for safety and efficiency.

This structured guide helps maintain equipment integrity and ensures operational safety, prolonging the service life of machinery components.