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TM 10-4320-342-10
2-3. INTRODUCTION - continued.
c.
Special Instructions - continued.
(2)
Leakage definitions for operator/crew PMCS shall be classified as follows:
WARNING
Avoid spillage of fuel. Drain fuel in an adequate
container, otherwise a fire hazard or environmental
contamination could result. Dispose of contaminated fuel
in accordance with FM 10-20 and local regulations.
a.
Class I. Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
b.
Class II. Leakage of fluid great enough to form drops but not enough to cause drops to drip from
item being checked/inspected.
c.
Class III. Leakage of fluid great enough to form drops that fall from item being checked/inspected.
2-4. GENERAL MAINTENANCE PROCEDURES.
As you perform your PMCS, keep in mind the following:
a.
Cleanliness. Dirt, grease, oil, and debris only get in the way and may cover up a serious problem.
b.
Bolts, Nuts, and Screws. Check them all for obvious looseness and missing, bent, or broken condition.
Look for chipped paint, bare metal, or rust around bolt heads. If you find a problem, report it to your
supervisor.
c.
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.
d.
Electrical Wires and Connections. Look for cracked or broken insulation, bare wires, and loose or
broken connectors. Tighten loose connections and make sure the wires are in good condition. If you find
a bad wire or connector, report it to your supervisor.
e.
Fuel Lines and Fittings. Look for wear, damage, and leaks. Make sure clamps and fittings are tight. Wet
spots show leaks, but a stain around a fitting or connector can mean a leak. If a leak comes from a
loose fitting or connector, or if something is broken or worn out, report it to your supervisor.
2-8
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