TM  10-3930-643-34 GENERAL  SUPPORT  PROPELLER 16-1. Front  Differential DISASSEMBLY NOTE AND  PROPELLER  SHAFTS  MAINTENANCE. Carrier Assembly. (Sheet 2 of 13) Prior  to  disassembly  of  differ- ential  carrier  assembly,  backlash of gears must be measured and recorded. Steps 1 thru 3 are necessary only if gears are to be reused. 1. Position  dial  scale  indicator  on differential  carrier  assembly  as shown. 2. Using a padded vise, secure yoke (38 or 58) and rotate gear (32) back and forth. 3. Record backlash as indicated on dial scale indicator. NOTE Except  where  noted,  The  follow- ing  disassembly  procedure  for the  differential  assembly  is identical  for  both  vehicles  S/N 2001 to 2903 and S/N 2000 and below and 2904 and above. 4. Using  long  round  nose  pliers,  remove two cotter pins (1) and adjustment rings (2) from carrier (54). Discard two cotter pins. NOTE The  following  is  a  difference between  M10A  Forklift  models. 5. Using  diagonal  cutters,  cut  and discard two lock wires (3) on vehicles S/N 2000 and below and 2904 and above. 6. Using a 15/16”   socket and socket wrench  handle,   remove nut (4) and screw  (5) from carrier (54) on vehicles S/N 2001 to 2903 only. Go to sheet 3 16-3