TM 9-2350-247-10PREVENTIVE MAINTENANCE CHECKS AND SERVICES — Continued 0057 00Open sample valve on engine oil filter and drain a small amount of oil into a container to clear valve of grit andcontamination. (Properly dispose of container and oil upon completion of sample taking.) Fill sampling bottle to the neckshoulder and seal it. Attach DA Form 2026 to sampling bottle.FILLTOHEREClose oil sample valve and install dust cap.Take oil sample from transmission in the same manner (see previous three steps).Stop engine (WP 0023 00), (WP 0024 00).Lower crew seat and center floor plate (WP 0077 00).Deliver sample bottles to the unit AOAP monitor.NOTEFor location of nearest AOAP Laboratory and complete information about AOAP, refer to TB43-0106. “Oil filters shall be serviced/cleaned/changed as applicable, when: (a) They are knownto be contaminated, or clogged; (b) Service is recommended by AOAP Laboratory analysis, or(c) At prescribed hard time intervals.”PRESERVATION OILIf engine/transmission has been filled with preservation oil, leave this oil in engine/transmission until first scheduled oilchange. Maintain operating oil level by adding applicable grade oil (OE/HDO or OEA). When first scheduled oil change isdue, notify unit maintenance to refill engine/transmission with applicable grade of oil. See Lubrication Tables below.LUBRICATION TABLESLubrication intervals will be indicated by one of the following symbols:OC = AOAP On-ConditionB = BeforeD = DailyAF = AfterW = WeeklyM = MonthlyS = 1,500 miles (2,400 km), Semi-annuallyAN = Annually0057 00-5
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