TM 5-3895-371-10
3-5. Fluid Leakage.
It is necessary for you to know how fluid leakage affects the status of the hydraulic system. The following are definitions of
the types/classes of leakage you need to know to be able to determine the status of the distributor. Learn, then be familiar
with them and REMEMBER - WHEN IN DOUBT, NOTIFY YOUR SUPERVISORI
Leakage Definitions for Crew/Operator PMCS
CAUTION
Equipment operations is allowable with minor leakage (Class I or II). Of course,
consideration must be given to the fluid capacity in the item/ system being
checked/inspected. When in doubt, notify your supervisor.
When operating with Class I or II leaks, continue to check fluid levels as
required in your PMCS
Class III leaks should be reported to your supervisor or to Organizational
Maintenance
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 item
being checked/inspected
CLASS III
Leakage of fluid great enough to form drops that fall from the item being checked/inspected
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