TM  10-3930-638-24&P 4-4. TRANSMISSION MAINTENANCE (cont) j. Control Valve Assembly (cont). STEP LOCATION ITEM ACTION CLEANING  (cont) 15 All parts Clean INSPECTION 16 17 18 19 20 21 Control  valve  housing Inspect assembly  (25) Declutch valve spool (12),  Inspect speed selector spool (14), and forward and reverse spool (16) Detent balls (2) Inspect Detent  springs  (1) Inspect and balance spring (22) Back-up alarm switch  (3) Neutral  start switch (6) All other parts Inspect Inspect Inspect REMARKS Use cleaning solvent  P-D-680. Immerse parts in cleaning solvent and move slowly up  and  down  until  parts  are  thoroughly cleaned. Dry parts thoroughly using compressed air or clean cloths Inspect seats and spool bores for cracks and wear, damage and distortion. If any of these conditions are observed, replace part Inspect for wear, damage, bent or broken condition and distortion; if any of these conditions  are  observed  replace  part Inspect for flat or out of round condition, cracks, or other damage. Replace if any of these conditions are observed Replace if cracked, worn, distorted, broken or  permanently  set Check for cracked insulating material around body or terminals. Check for loose, missing, or corroded terminals. Replace if any of these conditions are observed Check for cracked body and corrosion in terminal contact area; replace if any of these  conditions  are  observed 22 Inspect  for  wear,  damage,  cracks,  and distortion; replace part if any of these conditions  are  observed 4-231

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