TM  10-3930-638-24&P 4-4.  TRANSMISSION  MAINTENANCE  (cont) j. Control Valve Assembly (cont). STEP LOCATION ITEM ACTION REMARKS DISASSEMBLY   (cont) 10 Speed selector spool Remove and plug assembly (14) 11 Plug (15) Remove From speed selector spool and plug assembly 12 Forward and reverse Remove spool (16) 13 Two oil seals (17) Remove  and Carefully pry from control valve housing discard 14 Hydraulic a. Glyd ring (18) Remove actuator b.  Inching  piston  (19) Remove assembly (11) c. Piston seal (20) Remove  and discard d. Spring retainer pin Remove (21) e. Balance spring (22) Remove f. O-ring (23) Remove  and discard g. Seal (24) Remove  and discard 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. 4-230