TM 10-4320-344-10Table 2-12.ItemNo.14IntervalBeforePreventive Maintenance Checks and Services for Pumping AssemblyModel US636HCCD-1.(Continued)LocationItem toCheck/ServiceENGINE-CONTFuel FiltersProcedureCheck the clear bowl on bottomof primary filter.If wateris present in bowl, rotateknob on bottom and drainwater.When fuel startsdraining from outlet, closevalve by turning knob inopposite direction.Rotateknob on bottom of secondaryf i l t e r .Drain water andsediment.When clean fuelstarts draining from outlet,close valve by turning knob inopposite direction.Not Fully MissionCapable if:15C l a s s I , I I , o rI I I l e a k.Cracked ordamaged fuelf i l t e r.BeforeOil DipstickCheck level.I f o i l i s a t o rbelow ADD mark on dipstick,remove cap from oil fillerneck.Add oil, as required,to FULL mark on dipstick.Reference LO 10-4320-344-12.Install cap after adding oil.O i l l e v e l i s ator below ADD markon dipstick.Missing dipstick.2-69
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