TM 9-2330-227-14&P
SPECIAL INSTRUCTIONS - CONTINUED
Bolts, Nuts, and Screws. Check that they are not loose, missing, bent, or broken. You can't try them
all with a tool, of course, but look for chipped paint, bare metal, or rust around boltheads. Tighten
any that you find loose.
Welds. Look for gaps where parts are welded together. If you find a bad weld, report it to
Organizational Maintenance.
Electric Wires and Connectors. Look for cracked or broken insulation, bare wires, and loose or
broken connectors. Tighten loose connectors, and make sure the wires are in good condition.
Hoses and Fluid Lines. Look for wear, damage, and leaks. Make sure clamps and fittings are tight.
Wet spots or stains around a fitting or connector can mean a leak. If a leak comes from a loose fitting
or connector, tighten it. If something is broken or worn out, either correct it or report it to Organi-
zational Maintenance (refer to Maintenance Allocation Chart, appendix B).
Fluid leaks affect the status of your equipment. The following are definitions of the types/classes of
leakage you need to know to be able to determine the status of your equipment. Learn and be familiar
with them.
LEAKAGE DEFINITIONS FOR OPERATOR/CREW PREVENTIVE MAINTENANCE CHECKS AND SERVICES
(PMCS)
Seepage of fluid (indicated by wetness or discoloration)
Class I
not great enough to form drops.
Leakage of fluid great enough to form drops, but not
Class II
enough to cause drops to drip from the item being
checked/inspected.
Leakage of fluid great enough to form drops that fall from
Class Ill
being checked/inspected.
CAUTION
Equipment operation is allowable with minor leakages (Class I or II). Consideration must
be given to the fluid capacity in the item/system being checked/inspected. When
operating with Class I or II leaks, continue to check fluid levels as required on your
PMCS. Class Ill leaks should be reported to Organizational Maintenance.
PMCS COLUMN DESCRIPTION
ITEM NO. - The order that PMCS should be performed, and also used as a source of item numbers for
the TM number column on DA Form 2404 Equipment Inspection and Maintenance worksheet when
recording results of PMCS.
INTERVAL - Tells when each check is to be performed,
ITEM TO BE INSPECTED - Lists the checks to be performed.
EQUIPMENT IS NOT READY/AVAILABLE IF - Has an entry only when the semitrailer should not be
operated or accepted with that problem.
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