TM  10-3930-643-34 GENERAL  SUPPORT  PROPELLER  AND  PROPELLER  SHAFTS  MAINTENANCE. 16-1. Front  Differential  Carrier  Assembly. ASSEMBLY (Cont) NOTE The following is a difference between  M10A  Forklift  models. 75. Be sure to aline identification marks on cases (15 and 34). Using a 1/2” socket and socket wrench handle, install  case  (15)  with  four  equally spaced bolts (14) on vehicles S/N 2001 to 2903 or case (15), 16 washers (13) and bolts (12) on vehicles S/N 2000 and below and 2904 and above. 76. Check assembly for free rotation of differential  gears. 77. Install  remaining  bolts  (14)  and washers (13) or bolts (12). Tighten bolts (13 or 12) to 105 to 135 lb-ft. 78. Install bearings (33 and 35) on differential  carrier  and  lubricate with gear oil. 79. Using a 15/16”   socket and torque wrench,   install blue cups, two pins (9), bearing caps (8), four washers (7) and bolts (6) to carrier (54). Tighten bolts (6) to 160 to 190 lb-ft. Identification  marks  on  bearing  caps and carrier must be alined during installation. 80. Check fit of cups in bearing cap bores. Cups must be a hand push fit. If cups are too tight, bores must be reworked  with  emery  cloth  until  push fit is obtained. A blued cup should be used as a gage to check fit. 81. Remove four bolts (6), washers (7), two bearing caps (8), pins (9) and blued cups. (Sheet 12 of 13) GO to sheet 13 16-13