TM 10-3930-659-34 5-12.  TRANSMISSION CLUTCH PACKS AND IDLER GEAR MAINTENANCE (Con’t). (s) Turn   over   first/forward   gear   disc   carrier (36).  Install seven clutch plates (83), eight clutch discs  (84),  shim  (85),  and  retaining ring (86). (t) Turn   over   first/forward   gear   disc   carrier (36).    Alternately  install  12   clutch   plates (82) and 13 clutch discs (81) on first/forward gear disc carrier (36). (u) Install shim (80) and retaining ring (79) on first/forward gear disc carrier (36). 2. Third/Fourth Gear Clutch Pack. (a) Install  32  roller   bearings   (75)   and   angle ring (74) in third gear spur gear (76). (b) Install  thrust  disc  (78),  thrustwasher  (77), and third gear spur gear (76) on third/fourth gear disc carrier (73). 5-104