TM  10-3930-638-24&P 4-2.   ENGINE   MAINTENANCE   (cont) e. Flywheel and Flywheel Housing (cont). STEP LOCATION ITEM ACTION REMARKS REMOVAL 1 Flywheel a. Three cap screws (1) Remove If necessary housing  (17), lock washers (2) front and washers (3) b. Dust cover (4) Remove If necessary 2 Flywheel a. Ring gear (8) Align  timing Insert screwdriver into timing hole in fly- assembly  (7) mark  with wheel housing and engage ring gear teeth roll  pin to move gear to align (19) b. Four cap screws (5) Remove and washers (6) c. Flywheel assembly Remove (7) d. Ring gear (8) Remove Use drift to drive off fly wheel (9) only if gear requires replacement 3 Flywheel a. Cap screw (10) Remove housing  (17), and lock washer (11) top b. Cover (12) Remove 4 Flywheel a. Two nuts ( 13) Remove housing  (17), and lock washers (14) rear b. Two cap screws (15) Remove and lock washers (16) c.  Flywheel  housing Remove Use  chain  hoist  securely  fastened  to  fly- (17) wheel  housing 5 Cylinder block TWO studs  (18) Remove Only  if  damaged 6 Flywheel Roll pin (19) Remove Only  if  damaged housing  (17), timing hole CLEANING WARNING Dry cleaning solvent (P-D-680), used to clean parts is toxic and flammable. Wear protective goggles and gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and don’t breathe vapors. Do not use near open flame or exces- sive heat and don’t smoke when using it. Failure to do so could cause serious injury. If you become dizzy while using cleaning solvent,  get  fresh  air  immediately,  and  get  medical  attention.  If contact with skin or clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water immedi- ately, and obtain medical aid immediately. 4-38