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TM5--4210-224-14&P
j.
When you do your PREVENTIVE MAINTENANCE, always take along the tools you'll need to make all the
checks. You'll always need a rag or two.
WARNING
Cleaning solvent, Federal Specification P-D-680, is both toxic and flammable. Keep off skin.
Use only in a well-ventilated area and avoid prolonged breathing of vapors. Keep away from
open flame.
k.
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 cleaning solvent (Appendix D, item 44) on all metal surfaces. Use soap and
water when you clean cloth, rubber or plastic material.
l.
Bolts, nuts, and screws: Check them all for obvious looseness, missing, bent or broken condition. You can't
try them all with a tool, of course, but look for chipped paint, bare metal, or rust around the bolt and nut
heads. If you find one you think is loose, tighten it or report it to organizational maintenance if you can't
tighten it.
m.
Welds: Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad weld,
report it to organizational maintenance.
n.
Electric wires and connectors: Look for cracked or broken insulators, bare wires, and loose or boken
r
connectors. Tighten loose connectors and make sure the wires are in good shape.
o.
Leakage: Leakage definitions for operator/crew PMCS shall be classified as follows:
Class I
Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Class II
Leakage of fluid great enough to form drops but not enough to cause drops to drip from
item being checked/inspected.
Class III
Leakage of fluid great enough to form drops that fall from the item being
checked/inspected.
CAUTION
Equipment operation is allowable with minor leakages (Class I or II).  Of course, you must
consider the fluid capacity in the item/system being checked/inspected. When in doubt, notify
your supervisor.
2-33

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