4-4. TRANSMISSION MAINTENANCE (cont) i. Forward Clutch Assembly (cont). TM    10-3930-638-24&P ITEM ACTION REMARKS STEP LOCATION LEANING  (cont) 14 All parts Clean 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 com- pressed air or clean cloths INSPECTION 15 16 17 18 REASSEMBLY 19 Clutch piston (9) Forward  shaft  drum and plug assembly (12) Inner  clutch  discs (4), outer clutch discs (5) Piston return springs  (8) All other parts Inspect Inspect Inspect Inspect a. Outer clutch Install  and piston seal (10) size Inspect teeth for wear, pits, cracks, nick and scores. Inspect shaft and quills to make certain they are not sprung, bent or have twisted splines and that shafts are true. Inspect overall for wear, cracks, distortion and damage. If any of these conditions are observed, replace forward shaft drum and plug assembly Replace disc if worn, cracked, damaged or broken Replace if cracked, worn, distorted, broken or permanently set Inspect for wear, cracks, distortion and damage. If any of these conditions are observed,  replace  part Lubricate  oil  seal  with  OE10  (refer  to current lubrication order). To size seal, rotate clutch piston while holding a round object against new seal as shown. Rotate clutch piston until seal is flush with outer diameter of clutch piston Change  1        4-225