COGENG 707-99-66210 - OEM-Spec Complete Rebuild Set for Multiple Applications

Decompose pictures




Parts list





Installation decomposition diagram

1. System Safety: Completely depressurize the hydraulic system and secure the equipment before disassembly. Support the cylinder rod properly during removal.

2. Cleanliness Protocol: Work in a meticulously clean environment. Use a dedicated clean bench and tools. Even microscopic contaminants can compromise seal life.

3. Component Assessment: Measure and inspect the cylinder tube ID, piston rod OD, and gland bore for scoring, corrosion, or dimensional wear. Replace components that exceed manufacturer's wear tolerances.

4. Seat Preparation: Remove all burrs and sharp edges from groove corners with a fine honing stone. Clean all grooves thoroughly with a non-linting cloth.

5. Seal Installation Technique: Lubricate all seals with the system's clean hydraulic fluid. Use installation sleeves or cones, especially for rod seals. Never use sharp tools to position seals.

6. Break-in Procedure: After assembly, cycle the cylinder slowly at reduced pressure to seat the seals properly. Monitor for leaks and smooth operation before returning to full service.

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