CLEANING - Continued
GENERAL CLEANING INSTRUCTIONS - Continued
Hydraulic System. When cleaning hydraulic system parts, use a solvent cleaning compound. Clean and dry
parts thoroughly to ensure no residue remains. If a coating of preservative is required before assembly, apply
a light film of preservative oil. If petroleum-free solvents are not available, use the same hydraulic fluid as used
in vehicle system.
END OF TASK
GENERAL INSPECTION INSTRUCTIONS
Sealing Surfaces. Inspect all surfaces in contact with gaskets, packing, or seals. Ensure there are no nicks,
burrs, or scratches. If any defect is found, remove or repair as outlined under General Repair Instructions in
this work package.
Bearings. Check bearings for rusted or pitted balls, races, or separators. Check balls and races for brinelling,
abrasion, and serious discoloration. Criteria for bearing rejection are as follows:
Cuts or grooves parallel to ball or roller rotation.
Fatigue pits (not minor machine marks or scratches).
Inspection. Inspection consists of checking for defects, such as distortion, wear, cracks, leakage, and pitting.
Parts under heavy load or pressure must be inspected more thoroughly. Clean all parts before inspection.
Drain Plugs. When removing drain plugs from system components, inspect for sediment adhering to plug. A
buildup of grit and/or fine metal particles may indicate part failure. A few fine particles are normal.
This inspection is effective in determining defective parts prior to internal inspection of parts.
Tubing and Hosing. Check all hose surfaces for broken or frayed fabric. Check for breaks caused by sharp
kinks or rubbing against other parts of vehicle. Inspect fitting threads for damage. Replace any part found to
be defective. Following assembly and during operation of Load Handling System, check for leaks.
Electrical Parts. Inspect wiring harnesses for chafed or burned insulation. Inspect all terminal connectors for
loose connections and broken parts. Inspect connectors for corrosion.
Metal Parts. Visually inspect all castings and weldments for cracks. Parts that carry a great load should receive
magnetic particle inspection. Critical nonferrous parts may be inspected with fluorescent penetrant.
END OF TASK