5-8. PMCS PROCEDURES (CONT).
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 drycleaning solvent (P-D-680) on all metal surfaces. Use soap and water when
you clean rubber or plastic material.
Rust and Corrosion. Check Heater body and frame for rust and corrosion. If any bare metal or
corrosion exists, clean and apply a thin coat of oil. Report it to your supervisor.
Bolts, Nuts, and Screws. Check them all for obvious looseness, missing, bent, or broken condition. You
cant 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 you think is loose, tighten it or report it to your supervisor.
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.
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.
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, report it to your supervisor.
When you check for "operating condition," you look at the component to see if its serviceable.
5-9. CLEANING AGENTS.
Drycleaning solvent P-D-680 is toxic and flammable. Wear protective goggles, face mask, and
gloves and use only in a well-ventilated area. Avoid contact with skin, eyes, and clothes and don't
breathe vapor. Do not use near open flame or excessive heat. The flash point for type I drycleaning
solvent is 100'F (38'C) and for type II is 140'F (60'C). If you become dizzy while using cleaning
solvent, get fresh air immediately and get medical aid. If contact with eyes is made, flush eyes with
water and get medical aid immediately.
DO NOT use diesel fuel, gasoline, or benzene (benzol) for cleaning.
DO NOT SMOKE when using cleaning solvent. NEVER USE IT NEAR AN OPEN FLAME. Be sure
there is a fire extinguisher nearby and use cleaning solvent only in well-ventilated places.
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.