Cadillac 60 Series 1963 Shop Manual page 222

ENGINE MECHANICAL
9-29
6. Slowly rotate crankshaft clockwise (viewed
from front of engine) until tool contacts and forces
out upper shell.
7. Install new upper shell in place as far as
possible by hand, with locating tang in correct po-
sition. Remover Tool,J-8080 may also be used to
aid in installing new upper shell. Install tool in
crankshaft oil passage so that tool bears against
notched end of bearing shell. Rotate crankshaft
counterclockwise to position bearing, then remove
tool.
8. Install new lower shell in cap with locating
tang in correct position.
NOTE: When replacing the rear main bear-
ing, use a new oil seal as described in Note 30.
9. Install cap on cylinder block and secure with
two attaching screws. Tighten screws to 95 foot-
pounds.
10. Replace four remaining bearings in same
manner.
NOTE: When replacing center thrust bear-
ing it is necessary to line up bearing thrust
surfaces. To do this, install bearing cap screws
finger tight. Then, using a plastic hammer, tap
crankshaft fore and aft the limit of its travel
several times. Do not use hammer on connect-
ing rods, tap on counter-weights only.
11. Install spark plugs and tighten to 25 foot-
pounds. Connect spark plug wires at plugs.
12. Install oil intake screen assembly on cylin-
der block, using new gasket, and secure with three
attaching screws. Tighten screws to 18 foot-
pounds.
13. Install oil pan as described in Note 19b.
7. Inspect grooves in bearing cap and cylinder
block to be sure they are clean, dry, and free
from burrs.
NOTE: The two seal halves are identical and
can be used in either the lower or upper lo-
cation. Both seal halves are pre-lubricated with
a film of wax for break-in. Do not remove or
damage this film.
8. To install upper half of seal in cylinder
block, start seal into groove in block with lip fac-
ing forward and rotate seal into position, using
care not to distort seal.
9. Press firmly on both ends of seal to be sure
that it is protruding uniformly on each side. Avoid
pressing on lip as damage to sealing edge could
result.
10. Install lower half of seal into bearing cap
with lip facing forward, and with one end of seal
over ridge and flush with split line. Hold one
finger over this end to prevent it from slipping,
and push seal into seated position by applying
pressure to other end.
11. Be sure seal is pressed down firmly and
that it protrudes uniformly on each side. Avoid
pressing on lip as damage to sealing edge could
result.
12. Prior to assembly of rear main bearing cap
on block, apply rubber cement to cap and block,
Fig. 9-33. Apply a film approximately .010 inch
thick to each surface to act as a sealer.
CAUTION: Keep rubber cement off the seal
lip and the bearing surface to avoid damage to
the seal and crankshaft.
13. Install bearing cap with attaching screws
and tighten screws evenly to 95 foot-pounds.
30. Rear Main Bearing Oil Seal
Replacement
1. Raise car and place jackstands under car.
2. Disconnect spark plug wires and remove
spark plugs.
3. Remove oil pan as described in Note 19a.
4. Loosen two cap screws that hold rear main
bearing cap to cylinder block and remove cap with
screws.
5. Remove lower seal half from bearing cap and
discard.
6. Remove upper seal half from cylinder block
and discard.
Rear Main
Bearing Cap
Rear Main Bearing
Oil Seal
Fig. 9-33 Applying Cement to Seal Surface