TM 10-3930-664-24 7. Remove   eight   bolts   (13)   from   steering   case   (17). Remove  assembled  ring  gear  (15)  from  wheel  hub (16). 8. Using  puller,  remove  wheel  hub  (16)  from  steering case (17). 9. Remove    seal    (18)    and    roller    bearing    (19)    from steering case (17). 10.  Using  pliers,  remove  snap  ring  (21)  from  ring  gear (15).  Remove ring gear support (22). 11.  Remove   roller   bearing   (20)   and   O-ring   (23)   from wheel hub (16).  Discard O-ring. 12.  Remove eight wheel studs (23) from wheel hub (16) only if replacement is required. B.  CLEANING Clean  planetary  drive  gear  components  in  accordance with paragraph 1-24. C.  INSPECTION Inspect  planetary  drive  gear  components  in  accordance with paragraph 1-24. D.  INSTALLATION 1. Install eight wheel studs (23) onto wheel hub (16). 2. Press roller bearing (20) onto wheel hub (16).  Install new O-ring (23). 3. Install  seal  (18)  and  roller  bearing  (19)  into  wheel hub (16). 4. Install wheel hub  (16)  onto  steering  case  (17).    Tap into place using a soft head hammer. 5. Install   ring   gear   support   (22)   into   ring   gear   (15). Secure using snap ring (21). 6. Install  assembled  ring  gear  (15)  onto  steering  case (17),  ensuring  proper  bolt   hole  alignment.    Apply loctite   to   threads   of   eight   bolts   (13)   and   install. Torque bolts to 5 to 15 ft-lbs.  (7 to 20 Nm). 4-80