TM  10-3930-643-34 GENERAL  SUPPORT  ENGINE,  FUEL,  EXHAUST  AND  COOLING  MAINTENANCE.  (cont) 13-6. Rear Oil Seal. (Sheet 5 of 6) INSTALLATION  (cont) 9. 10. 11. 12* NOTE Only four bolt holes in the crank- shaft will line up with the holes in the centering plate. Attach the centering plate to the flange of crankshaft (4) using the four allen head screws. DO  NOT tighten the screws at this time. NOTE Never remove the oil seal from the wear  sleeve  during  assembly. Position new wear sleeve (3) with new oil seal (1) on centering plate and crankshaft (4), as shown. Tighten the four allen head screws. NOTE Do not allow liquid gasket material to come into contact with lip of seal or O.D. of wear sleeve. Coat I.D. of new wear sleeve (3) and O.D. of new oil seal (1) with a thin film of liquid gasket material. Center new wear sleeve (3) and new oil seal (1) on crankshaft (4). Go to sheet 6 13-42