TM 10-3930-659-34 5-12.  TRANSMISSION CLUTCH PACKS AND IDLER GEAR MAINTENANCE (Con’t). NOTE First/forward,    second/reverse,    and    third/fourth    gear    axles    are    inspected    the    same    way. First/forward gear axle is illustrated. 4. Inspect  three  piston  rings  (97)  on  first/forward gear  axle  (2)  for  damage.    Replace  damaged piston rings. 5. Inspect  four  studs  (100)  for  damage.    Replace damaged studs. 6. Inspect  lubrication  orifices  in  first/forward   gear axle (2) for restrictions.  Clear restrictions. 7. Inspect  pins  (98  and  99)  for  damage.    Replace damaged pins. 8. Repeat   steps   4   through   7   for   second/reverse and third/fourth gear axles. d.  ASSEMBLY 1. Clutch Packs. NOTE First/forward,  second/reverse,  and  third/fourth  gear  clutch  packs  are  assembled  the  same  way, except number of clutch discs may vary.  First/forward gear clutch pack is illustrated. (a) If removed, install two bearings (95 and 96) in first/forward gear disc carrier (36). (b) If removed, install two new seal rings (93 and 94) on piston (92). (c) Install piston (92) on first/forward gear disc carrier (36). 5-101