TM 9-2320-363-20-1
(1)
Keep It Clean. Dirt, grease, oil, and debris get in the way and may cover up a serious problem Clean as
you work and as needed. Use dry cleaning solvent (Item 25, Appendix C) on all metal surfaces. Use detergent (Item 6.1,
Appendix C) and water when you clean rubber, plastic, and painted surfaces.
(2)
Rust and Corrosion. Check metal parts for rust and corrosion. If any bare metal or corrosion exists, clean
and apply a light coat of lubricating oil (Item 18.1, Appendix C). Report it to your supervisor.
(3)
Bolts, Nuts, and Screws. Check bolts, nuts, and screws 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
one you think is 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 or broken insulation, bare wires, and loose or broken
connectors. Tighten loose connectors and ensure that the wires are in good condition.
(6)
Hydraulic Hoses and Lines. Look for wear, damage, and signs of leaks. Ensure that clamps and fittings
are tight. Wet spots indicate 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, correct it if authorized by the Maintenance
Allocation Chart (Appendix B). If not authorized, notify your supervisor.
(7)
Fluid Leakage. It is necessary for you to know how fluid leakage affects the status of your truck. The
following are definitions of the types/classes of leakage you need to know to be able to determine the status of your truck.
Learn and be familiar with them, and remember - when in doubt, notify your supervisor.
Leakage Definitions for PMCS
Class I
Leakage indicated by wetness or discoloration, but not great enough to form drops
Class II
Leakage great enough to form drops, but not enough to cause drops to drip from the item
being checked/inspected.
Class III
Leakage great enough to form drops that fall from the item being checked/inspected.
CAUTION
Operation Is allowable with Class I and Class II leakage. WHEN IN DOUBT, NOTIFY
YOUR SUPERVISOR. When operating with Class I or Class II leaks, check fluid
levels more frequently. Class III leaks must be reported immediately to your
supervisor. Failure to do this will result In damage to vehicle and/or components.
Change 3 2-5
