TM  10-3930-638-24&P 4-2.  ENGINE  MAINTENANCE  (cont) i. Oil Pump (cont). STEP LOCATION ITEM ACTION REMARKS CLEANING WARNING Dry cleaning solvent (P-D-680), used to clean parts is toxic and flammable.  Wear  protective  goggles  and  gloves  and  use  only  in  a well ventilated area. Avoid contact with skin, eyes, and clothes and don’t breathe vapors. Do not use near open flame or exces- sive heat and don’t smoke when using it. Failure to do so could cause serious injury. If you become dizzy while using cleaning solvent, get fresh air immediately, and get medical attention. If contact with skin or clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water immedi- ately,  and  obtain  medical  aid  immediately. WARNING Wear safety glasses when drying parts with compressed air. Fail- ure to do so could cause serious injury to eyes and possible blind- ness. If you hurt your eyes or if a foreign object is blown into your eyes, seek medical attention immediately. 6 Oil pump screen (1) Clean Immerse in cleaning solvent P-D-680. Clean all  solidified  lubricant/sludge  from screen and inside suction tube. Dry with moisture  free  compressed  air 7 All other parts Clean Use  cleaning  solvent  P-D-680;  dry  with moisture  free  compressed  air  or  clean cloths INSPECTION 8 Oil  pump a. Pump drive Check Use feeler gage as shown and check pump body  (13) gear drive gear to oil pump body clearance. Clearance shall not exceed 0.010 inch; if  clearance  exceeds  this  dimension,  re- place oil pump 4-71