5.
It is necessary for you to know how fluid 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 REMIEMBER--when in doubt, notify your supervisor.
CAUTION
Equipment operation is allowable with minor leakages (Class I or II) Of course,
consideration must be given to fluid capacity in the item/system being
checked/inspected. When operating with Class I or II leaks, continue to check fluid
levels as required on your PMCS. Class III leaks should be reported to your
supervisor or unit maintenance.
LEAKAGE DEFINITIONS FOR UNIT MAINTENANCE
CLASS I
Seepage of fluid (as indicated by setness 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.
C-20
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