PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS Continued
Air pressurized in excess of 30 psi (207 kpa) can injure personnel. Do not direct pressurized air
at yourself or others. Always wear goggles.
INSERTS. Blow out insert holes with compressed air.
GASKETS. If a gasket is being removed, scrape old gasket material and sealant off mating surface. Clean mating
surface with cleaning compound (WP 0928 00, Item 19). Dry with wiping rag (WP 0928 00, Item 65).
All removed parts must be inspected with care. Replace parts if damage or wear exceeds allowable limits.
GENERAL. Procedures for inspection will be the same for most parts. General inspection procedures are given in
steps b through p below. Special inspection procedures are covered in the task as needed.
1) Inspect all castings and forgings for breaks, cracks, and wear or scoring that would impair function.
2) Inspect machined surfaces for nicks, burrs, and raised metal. Mark damaged areas for repair.
3) Use straightedge to check all mounting flanges on housings and supports for bends. Inspect mating flanges for
stains which would indicate oil leakage.
4) Inspect all threaded parts for damaged or stripped threads.
NEEDLE ROLLER BEARINGS. Inspect bearings for free and smooth rotation, and broken or missing rollers. Also
look for tightness of fit in bearing bores. Inspect bearing races for wear and color changes due to heat. See TM
9-214 for inspection procedures.
STUDS. Inspect all studs for stripped or damaged threads, bent or loose condition, and signs of stretching.
GEARS. Inspect gears for burrs, wear, cracked or broken teeth, and pitting at tooth contact areas.
BUSHINGS AND BUSHING-TYPE BEARINGS.
1) Check all bushings and bushing-type bearings for secure fit in casting. Check for color changes which could
mean overheating. Inspect for size, scoring, out-of-roundness, burrs, sharp edges, and signs of seizing.
2) Check for dirt in oil holes and in bushing-type bearings. Oil holes and grooves must be clean and not damaged.
1) Inspect feather edge of oil seals for tears, fraying, hardening, and cracking.
2) Replace metal-covered oil seals when there are signs of damage or oil leakage.
CORE HOLE PLUGS. Inspect core hole plugs for signs of leakage. Replace damaged core hole plugs.