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TM 9-2320-304-14&P
2-6
Operating Instructions (Cont)
2-7. LEAKAGE CLASSIFICATION AND DEFINITION.
CAUTION
Equipment operation is allowable with minor leaks (Class I or II). Consideration must be
given to the fluid capacity in the item/system being checked/inspected. When in doubt,
notify the supervisor. When operating with Class I or II leaks, continue to check fluid levels
as required in the PMCS. Class III leaks should be repaired using tools available if possible.
If not, use “Not Fully Mission Capable” column criteria.
NOTE
·
If leakage is detected, further investigation is needed to determine the location and
cause of the leak. If there is any doubt, contact your supervisor or Organizational
Maintenance.
·
Diesel engine slobber is an inherent condition of two-cycle diesel engines when
engines are allowed to idle for prolonged periods of time. This characteristic may be
incorrectly interpreted as a Class III leak. Check engine oil level. If there is any
doubt, consult with your supervisor or Organizational Maintenance.
a. Class I. Leakage of fluid as indicated by wetness or discoloration not great enough to form drops.
b. Class II. Leakage of fluid great enough to form drops but not enough to cause drops that fall from
item being checked/inspected.
c. Class III. Leakage of fluid great enough to form drops that fall from the item being
checked/inspected. Try to fix leak using tools available.
2-8. OPERATOR/CREW PREVENTIVE MAINTENANCE CHECKS AND SERVICES
TABLES.
NOTE
Table 2-1 covers items common to LHS system and CHU on M1120 series vehicle. Refer to
TM 9-2320-279-10 for vehicle PMCS.
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