TM 5-4320-200-13&PRemove all component covers before starting engine.Keep cleaning solvents, gasoline, and lubricants away from rubber orsoft plastic parts. They wilI deteriorate material.Cleaning Rust or Grease. When cleaning grease buildup or rusty places, use a cleaning solvent.Then apply a thin coat of light oil to affected area.4-1.3 LEAKAGEDEFINITIONSFOR UNIT PMCS, It is necessary for you to know how fluid leakage affectsthe status of the pump. Following are types/classes of leakage the maintainer needs to know to be able todetermine the status of the pump.Equipment operation is allowable with minor leakages (Class I or II). Of course, con-sideration must be given to fluid capacity in the hem/system being checked/in-spected.CLASS I-Seepage of fluid (as indicated by wetness or discoloration) not great enough to formdrops.CLASS II - Leakage of fluid great enough to form drops but not enough to cause drops to dripfrom item being checked/inspected.CLASS III - Leakage of fluid great enough to form drops that fall from item being checked/in-spected.Change 54-2.1
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