CX80C Midi Excavator Maintenance Manual

Product Overview

The CX80C Midi Excavator is engineered for optimum performance and durability. This comprehensive manual provides detailed instructions for maintaining and servicing your excavator, ensuring it operates efficiently. The manual covers key components, from the engine and hydraulic systems to cab climate control and electrical schematics.

Table of Contents

1. Content
2. Introduction
3. Engine
4. Hydraulic System
5. Frames and Ballasting
6. Tracks and Track Suspension
7. Cab Climate Control
8. Electrical System
9. Booms, Dippers, and Buckets
10. Dozer Blade and Arm
11. Platform, Cab, Bodywork, and Decals
12. Special Tools Index
13. Electrical Schematic
14. Hydraulic Schematic

Manual Extract: Boom Lifting Cylinder Holding Valve Removal

This section provides step-by-step instructions for removing the boom lifting cylinder holding valve, critical for the maintenance and repair of the hydraulic system.

Step-by-step Instructions

1. Remove the boom cylinder:
   • Refer to the section u201cBoom cylinder – Remove (35.736)u201d for detailed instructions.
2. Remove the bolt and line:
   • Use a 17 mm wrench to remove bolt (1).
   • Use a 36 mm wrench to remove the line (2).
   • Cover the HBCV and lines with caps or plugs to prevent the entry of water, dust, or dirt.
   • Clean the HBCV and lines by spraying them with a parts cleaner to prevent scratches and accumulation of dirt on connectors.
3. Remove line (1):
   • Use 27 mm and 36 mm wrenches.
   • Again, cover with caps or plugs and clean as described above.
4. Remove the boom HBCV:
   • Use a 17 mm wrench to remove two bolts (1).
   • Remove the boom HBCV (2).
   • Note: Tightening torque for bolt installation is currently unspecified.