It is necessary for you to know how fluid leaks affect the status of the trailer. The following are
definitions of the types/classes of leakage needed to determine the status of the trailer. Become
familiar with them. When in doubt, notify your supervisor.
Class I Seepage of fluid (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 fall.
Class Ill Leakage of fluid great enough to form drops that fall.
When operating with class I or II leaks, check fluid levels more often than that required in
the PMCS. Hydraulic brake systems with leaks will stop working if fluid levels are not
Equipment operation is allowable with minor leaks (class I or II). Consideration must be
given to the fluid capacity of the trailer hydraulic system. Notify your supervisor when in
Class Ill leaks must be reported to your supervisor or 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.
Hem To Be Inspected Lists the check to be performed.
Equipment Is Not Ready/Available If Has an entry only when the trailer should not be operated or
accepted with that problem.
OPERATOR/CREW PREVENTIVE MAINTENANCE CHECKS AND SERVICES
ITEM TO BE INSPECTED
PROCEDURE: CHECK FOR AND HAVE
REPAIRED, FILLED, OR ADJUSTED
EQUIPMENT IS NOT
a. Check for excessive wear and
Tires are unserviceable.
b. Remove any glass, nails, or stones.