TM  10-3930-643-34 GENERAL  SUPPORT  PROPELLER  AND  PROPELLER  SHAFTS  MAINTENANCE. 16-1. Front Differential Carrier Assembly. (Sheet 8 of 13) ASSEMBLY NOTE The following steps (41 thru 55) is  the  assembly  procedure  for differential  carrier  assembly  for vehicles S/N 2001 to 2903. The assembly  procedure  for  differential carrier  assembly  for  vehicles  S/N 2000 and below and 2904 and above, proceed to steps (56 thru 68). When  replacing  parts,  gears  must be replaced as a matched set. Side gear thrust washers must be replaced as a matched set. 41. Install cup (74),   spacer (73) and cup (72) to cage (75).’ 42. Install cone (70) and bearing (68) to gear (66). 43. Install ring (67). 44. Using arbor press, install gear (66) in cage (75). 45. Install cone (69). 46. Rotate cage (75) to verify normal bearing  contact. 47. Apply load of 6 tons with press as shown. 48. Using soft iron wire and scale indicator,    measure  bearing  preload torque as shown. Bearing preload torque should be 5 to 15 in-lb. Be sure to measure rotating torque and not starting torque. Install  thinner spacer (73) to increase or thicker spacer (73) to decrease preload as required. Go to sheet 9 16-9