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Page Title: 2-7. LEAKAGE CLASSIFICATION AND DEFINITION
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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. Change 1

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