TM 9-2330-376-14&P
4 - 1 0 . GENERAL PMCS PROCEDURES (Con't).
(2) 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.
(3) Electrical 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.
(4) Hoses and Fluid Lines. Look for wear, damage, and leaks and ensure that clamps and fittings are
tight. Wet spots show leaks, of course, but a stain 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, report it to your supervisor.
c. It is important to know how fluid leakage affects the status of the trailer. Following are types/classes of
leakage you must know to determine whether the trailer is mission-capable. Learn these leakage definitions. When in
doubt, notify your supervisor.
Leakage Definitions for Organizational PMCS
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 great enough
to cause drops to drip from item being inspected.
Class Ill
Leakage of fluid great enough to form drops that fall from item being
inspected.
CAUTION
Equipment operation is allowed with minor (Class I or II) leakage. Fluid levels in an
item/system affected with such leakage must be checked more frequently than
required in PMCS. Parts without fluid will stop working or may be damaged. When in
doubt, notify your supervisor.
d. Report Class IIl leaks IMMEDIATELY to your supervisor.
4-11. SPECIFIC PMCS PROCEDURES.
a. Always do your PMCS in the same order so it gets to be a habit. Once you've had some practice, you'll
spot anything wrong in a hurry.
b. If the trailer doesn't work properly and you can't see what is wrong, refer to Section IV of this chapter for
troubleshooting instructions.
c. Before performing preventive maintenance, read all the checks required for the applicable interval and
prepare all tools needed to make all checks. Have several clean rags (Item 12, Appendix E) handy. Perform ALL
inspections at the applicable intervals.
d. The columns in Table 4-1 are defined as follows:
(1) Item No. The number in this column shall be used as a source of item numbers for the "TM ITEM NO"
column on DA Form 2404 when recording results of PMCS.
(2) Interval. Tells you when to do a certain check or service.
(3) Item to be Inspected. Lists system and common names of items that are to be inspected.
(4) Procedures. Tells you how to do the required check or service.
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