TM 9-6115-664-13&P Table 2-1.  Operator Preventive Maintenance Checks and Services for APU MEP-952B Item Interval Location: Procedure Not Fully Mission No. Item to Capable If: Check/ Service 11 During Engine Oil Oil level is at or below WARNING fill level on dipstick. (After 10 Oil is contaminated. Hours of Constant Use) Never service APU while engine is running. Shut down unit before servicing engine oil. Injury   to   personnel   can   occur   if   proper procedures are not followed. Shut down engine.  Check and service engine oil (refer to Table 2-1, item 8). 12 During Fuel Filter Filter separator is Water WARNING damaged or leaking. (After 10 Separator Hours of Constant Use) Never service APU while engine is running. Shut     down     unit     before     draining     filter separator.    Injury  to  personnel  can  occur  if proper procedures are not followed. Shut down engine.  Drain trapped water (refer to Table 2-1, item 6). 13 After Engine Open top lids and inspect engine fuel Leaks are present or Fuel Lines lines for cuts, tears, loose connections, lines are damaged. or evidence of leakage. 14 After Overall a. Inspect for cracks, leaks, dents, Fuel leaks are present. Generator corrosion. Significant cracks exist Set in enclosure or b. Inspect for loose hardware. components. 2-15