TM 9-2330-373-14 & P
4-7. ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES (cont)
e. 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 REMEMBER WHEN IN DOUBT, NOTIFY YOUR SUPERVISOR.
Leakage definition for Organizational 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 leakages (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 Class II leaks, continue to check fluid levels as
required in your PMCS. Class III leaks should be reported to your supervisor or
direct support.
4-8. SPECIFIC PROCEDURES
Specific procedures for performance of preventive maintenance checks and services are given in table 4-1.
TA 314746
4-5
