CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONSTM 9-2350-256-20TABLE 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR THE M88A1-ContinuedLocationItemToNot FullyItemCheck/MissionNo.IntervalServiceProcedureCapable If:13--SmokeCont.GrenadeLauncherSystem,M239-Cont.14SAPUa. Start engine. Listen for unusual noises in engine andAPU notgenerator which might indicate improper operation.serviceableSb. Observe warning lights and oil pressure gage to see ifunit is functioning properly. Oil pressure gage shouldindicate approximately between 30-45 pounds persquare inch (psi) (207-310 kilopascal [kPa] ).Sc. Service primary fuel filter. Replace filter semiannually.Sd. Service primary fuel filter. Replace filter semiannually.Se. Tighten fuel, oil, and air connections that leak.2-18
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