ARMY TM 9-6115-464-12AIR FORCE TO 35C2-3-445-1NAVY NAVFAC P-8-624-12Table 2-2. Operator Preventive Maintenance Checks and Services - ContinuedItemNo.89102-40IntervalBeforeDuringDuringDuringLocationItem toCheck\ServiceDay TankEngine Oil LevelControl Panela. Air Cleanerconditionb. FrequencymeterProcedureDrain water and sediment.NOTEIn freezing weather, drain shortly after op-eration. Allow to drain until fuel runs clear.Check oil level. Add oil as necessary.Indications shall be within specified limits.Lights up to indicate a clogged air cleaner.Press-to-test (para 2–2c).AIR CLEANERCONDITION50/60 Hz, 400 Hz (para 2-2d).Not MissionCapable If:Air cleaner missingor unserviceable.Light remains onduring operation.Frequency cannotbe properly ad-justed.
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