REPAIR OF HYDRAULIC SYSTEM
Introduction. This section contains general instructions for repair of the hydraulic system. Special instructions for
each component are given in later sections of this chapter.
Preparation for Disassembly.
Before disconnecting hoses, clean off all dirt around fittings.
As soon as hoses are disconnected, plug port holes.
Clean and dry assembly before placing it on the bench.
Work Conditions. Dirt in the hydraulic system will quickly cause failures of the pump, valves and motor. Clean
working conditions are important.
Use a clean bench or table covered with a piece of clean paper.
Compressed air used for cleaning purposes will not exceed 30 PSI. Use only with effective
chip guarding and personal protective equipment (goggles/shield, gloves, etc.).
Do not allow drycleaning solvents to come in contact with seals or flexible hoses. These
cleaners cause leather, rubber, and synthetic materials to dry out, rot, and lose pliability.
Clean all metal parts separately in clear, clean, drycleaning solvent. Blow dry with air to avoid nicks and burrs.
Avoid wiping parts with cloth, as lint may cause binding and sticking of the closely fitted parts.
Do not force or abuse closely fitted parts, as damage may result.