TM 10-3930-659-34 4-9. FLYWHEEL AND RING GEAR REPLACEMENT (Con’t). WARNING Use extreme  caution  when  handling  heavy  parts.    Lifting  device  is  required  when parts weigh over 50 lb (23 kg) for a single person lift, over 1 00 lb (45 kg) for a two person  lift,  and  over  150  lb  (68  kg)  for  a  three  or  more  person  lift.    Keep  clear  of heavy  parts  supported  only  by  lifting  device.    Failure  to  follow  this  warning  may cause serious injury or death to personnel. 4. Install two screws (5) in threaded holes (4) to push flywheel (3) off crankshaft. 5. Remove flywheel (3) and ring gear (2) from flywheel housing (1). 6. Remove two guide studs (7) from flywheel (3). 7. Remove two screws (5) from flywheel (3). b. INSTALLATION 1. Install two guide studs (7) on flywheel housing (1). WARNING Use extreme  caution  when  handling  heavy  parts.    Lifting  device  is  required  when parts weigh over 50 lb (23 kg) for a single person lift, over 100 lb (45 kg) for a two person  lift,  and  over  150  lb  (68  kg)  for  a  three  or  more  person  lift.    Keep  clear  of heavy  parts  supported  only  by  lifting  device.    Failure  to  follow  this  warning  may cause serious injury or death to personnel. 2. Position flywheel (3) and ring gear (2) on two flywheel guide studs (7). 3. Install two screws (5) on flywheel (3).  Do not tighten screws. 4. Remove two flywheel guide studs (7) from flywheel (3). 5. Install two screws (6) on flywheel (3). 6. Torque four screws (5 and 6) to 120 lb.-ft.  (163 N•m). FOLLOW-ON TASKS: • Install drive dampener (see paragraph 4-45). 4-45