TM 10-3930-669-34 10-4. DIFFERENTIAL REPAIR (CONT). (3) Install  washer  (43)  and  side  gear  (44)  in differential case (41). NOTE Ensure  that  the  tab  on  each  friction washer  is   aligned   in   the   differential case notch to prevent it from spinning freely. (4) Install     two     friction     washers     (50)     and differential pinions (49) in differential  case (41) with two pins (46) until the end of the pin   is   flush   with   inner   side   of   the   two differential pinions. (5) Install     third     friction     washer     (50)     and differential  pinion  (49)  in  differential  case (41)   with   pin   (45)   until   pin   is   flush   with inner side of third differential pinion. (6) Install fourth friction washer (50), differential  pinion  (49),  and  shaft  retainer (48)  in  differential  case  (41)  with  pin  (45) until    pin    passes    through    fourth    friction washer. NOTE Prior    to    final    installation    of    pins, ensure   roll   pin   holes   in   pins   align with roll pin holes in differential case. (7) Install    two    pins    (46)    and    pin    (45)    in differential  case  (41)  with  three  roll  pins (47). 10-20