TM 5-3815-223-14&P
It is necessary for you to know how 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 and REMEMBER - when in doubt, notify your supervisor.
LEAKAGE DEFINITIONS FOR OPERATOR/CREW 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 enough to cause drops to drip from the item
being
checked/inspected.
CLASS
III
Leakage of fluid great enough to form drops that fall from the item being checked/inspected.
CAUTION
Equipment operation is allowable with minor leakage (Class I or II). Of course, consideration must be given to the
fluid capacity in the item/system being checks/inspected. When operating with Class I or II leaks, continue to
check fluid levels as required on your PMCS. Class II leaks should be reported to your supervisor or unit
maintenance.
B-10
