TM  10-3930-638-24&P 4 - 4 .     T R A N S M I S S I O N     M A I N T E N A N C E     ( c o n t) h. Third Clutch Assembly (cont). STEP LOCATION ITEM CLEANING  (cont) 17 18 INSPECTION 19 20 21 22 23 Third  clutch  shaft front bearing (4) All other parts Third  clutch  shaft drum and plug assembly  (15) Inner clutch discs (7), outer clutch discs (8) Piston return spring (11) Third  clutch  shaft bearing  (4) All other parts ACTION REMARKS Clean Use cleaning solvent P-D-680. Immerse bearing in cleaning solvent and move slowly up and down. Remove bearing. Strike larger side of cone against block of wood  to  dislodge  solidified  particles  of lubricant.  Immerse  again  in  cleaning fluid. Repeat this process until bearings are thoroughly clean. Dry with moisture- free  compressed  air.  Direct  air  stream across bearing. Do not spin bearings when drying. Rotate bearings slowly by hand to facilitate drying 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 corn- pressed air or clean cloths Inspect Inspect teeth for wear, pits, cracks, nicks 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  part Inspect Replace disc if worn, cracked, damaged or broken Inspect Replace if cracked, worn, distorted, broken or  permanently  set Inspect Inspect rollers and cages for wear, chips, nicks and damage. If any of these condi- tions are observed, replace bearing. Dip bearing in clean light oil and wrap in clean  lintless  cloth  or  paper Inspect Inspect  for  damage,  wear,  cracks  and  dis- tortion. If any of these conditions are observed,  replace  part 4-219