Seepage of fluid (as indicated by wetness or discoloration) not great enough to form
Leakage of fluid great enough to form drops but not enough to cause drops to drip from
item being checked/inspected.
Leakage of fluid great enough to form drops that fall from the item being
Equipment operation is allowable with minor leakage (Class I or II) of any fluid except
fuel. Of course, consideration must be given to the fluid capacity in the item being
checked/inspected. When in doubt, notify your supervisor.
When operating with Class I or II leaks, continue to check fluid level more often than
required in the PMCS.
Class III leaks should be reported to your supervisor or unit maintenance.
e. Painting. Touch-up filter/separator as needed. Refer to TM 43-0139 for specific painting procedures.
Table 2-1. Operator Preventive Maintenance Checks and Services (PMCS).
Within designated intervals, these checks are to be performed in the order listed.
If the equipment must be kept in continuous operation, check and service only those
items that can be checked and serviced without disturbing the operation. Make the
complete checks and services when the equipment can be shut down.