TM 9-4310-397-14(7) Close airblock (3).(8) Install four hex washer head bolts (1) and new lock washers (2) (item 4, appendix H).Figure 4-4. Fuel Tank Drainingc.DrainandFillEngineCrankcase. The engine is preserved with P-10 preservative oil that must be drained andreplace with the appropriate motor oil for the operating conditions.(1)Drain.(a)Open curbside access doors (Figure 4-5, 1).(b)Place a pan (section II, appendix D) under engine (2).(c)Remove drain plug (3) and wait for all P-10 preservative to drain out. Contact your localenvironmental officer for guidance on how to properly dispose of P-10 preservative in accordancewith local regulations.(d)Wrap antiseize tape (item 1, section II, appendix E) around the drain plug (3) threads.4-5
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