TM 10-3930-643-34 FRAME  AND  TOWING  ATTACHMENTS  MAINTENANCE.  (cont) 10-2. Frame Hinge Pin and Frame Assembly. REMOVAL (cont) NOTE The following procedure is for removal of the top hitch shaft and bushings. Removal  of  lower hitch shaft and bushings is identical,   except  for  position- ing of a suitable puller or ports-power. Nut and bolt are provided for replacing  seal,  without  removing shafts. 37. Using a 1/2" socket, socket wrench handle and a 1/2" open end wrench, remove two nuts (18), bolts (19) and seals (20). Discard  two  seals (20) . 38. Using a 15/16" socket and socket wrench handle, remove two bolts (5), washers (6) and retainer plate (7). 39. Using  a  3-1/16"  socket  and  socket wrench  handle,  remove  nut  (8). 40. Using  a  1-1/8"  socket  and  socket wrench  handle,  remove  bolt  (9)  and spacer (10). 41. Using a large rubber mallet, remove shaft (11). If  necessary, drive shaft (11) from frame with hammer and drift. 42. Using a hammer and drift punch, remove spacer (12). (Sheet 7 of 13) 43.  Remove  bushing  (23). Go to sheet 8 10-12