TM  10-3930-638-24&P 3-30.   HYDRAULIC   LIFT   SYSTEM   MAINTENANCE   (cont) a.  Control  Valve  (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. 26 All parts Clean Use cleaning solvent P-D-680. Dry thoroughly. Be sure that bores in housings  are  thoroughly  clean INSPECTION/REPAIR 27 Springs Inspect Replace if distorted, cracked or fatigue signs  are  evident 28 spools Inspect Replace if finish is damaged or if bent or  damaged 29 Screws and plugs Inspect Replace  if  threads  damaged  in  any  way, or  corroded. 30 Housings Inspect Replace  if  bores  damaged,  cracked,  internal threads damaged, or internal wear is evident 31 All  other  parts Inspect Replace if damaged, cracked, or distorted LEFT COVER PLATE REASSEMBLY NOTE Lubricate  all  O-rings  before  reassembly  with  clean  hydraulic  oil (refer to current lubrication order). 32 Relief plug (6) a. O-ring (5) Install On plug (6) b. Back-up washer (4) Install c. O-ring (3) Install d. Back-up washer (2) Install 3-213