TM 9-6115-664-13&P
g.
When you perform PMCS you will always need a rag or two (Item 7, App. E). Following are checks that are
common to the entire APU:
(1)
Keep It Clean. Dirt, grease, oil, and debris only get in the way and may cover up a serious problem. Clean
as you work and as needed. Use dry cleaning solvent on all metal surfaces. Use soap and water when
you clean rubber or plastic material.
(2)
Rust and Corrosion. Check APU components for rust and corrosion. If any bare metal or corrosion exists,
clean, and apply a thin coat of polyurethane. Report it to your supervisor.
(3)
Bolts, Nuts, and Screws. Check them for obvious looseness, missing, bent, or broken condition. You can't
try them all with a tool, but look for chipped paint, bare metal, or rust around bolt heads. If you find a bolt,
nut, or screw that's loose, tighten it.
(4)
Welds. Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad
weld, report it to your supervisor.
(5)
Electric Wires and Connectors. Look for cracked, frayed, or broken insulation, bare wires, and loose or
broken connectors. Tighten loose connectors. Report any damaged wires to your supervisor.
(6)
Hoses and Fluid Lines. Look for wear, damage, and leaks, and make sure clamps and fittings are tight.
Wet spots show leaks, but a stain around a fitting or connector can also mean a leak. If a leak comes from
a loose fitting or connector, tighten it. If something is broken or worn out, replace it.
4-8. CLEANING AGENTS.
WARNING
Cleaning solvents are flammable and toxic to eyes, skin, and respiratory tract.
Skin and eye protections are required when working in contact with cleaning
solvents. Avoid repeated or prolonged contact. Work in well-ventilated area only.
Keep away from heat, sparks, and open flame, and do not smoke while using
cleaning solvents. Failure to observe this warning can cause injury to personnel.
WARNING
USE CAUTION when using cleaning solvents. Cleaning solvents evaporate quickly
and can irritate exposed skin if solvents contact skin. in cold weather, contact of
exposed skin with cleaning solvents can cause frostbite.
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