TM 9-4310-397-14
CAUTION
Equipment operation is allowable with minor leaks (Class I or II). 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 in your PMCS.
Class III leaks should be reported immediately to your supervisor.
(a)
Class I is defined as seepage of fluid as indicated by wetness or discoloration but not great enough to form
drops.
(b)
Class II is defined as leakage of fluid great enough to form drops but not enough to cause drops to drip
from item being checked/inspected.
(c)
Class HI is defined as leakage of fluid great enough to form drops that fall from item being
checked/inspected.
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