Crankcase Front Cover/Oil Seal; Oil Seal Replacement (Without Removing Front Cover); Removal; Installation - MerCruiser GM4 Service Manual

c. Install torsional damper on crankshaft by turn-
ing nut until it bottoms out.
a
a - Torsional Damper Remover and Installer
(J-23523-E)
d. Remove tool from crankshaft.
e. To prevent oil leakage, apply Quicksilver RTV
sealant to torsional damper keyway.
f. Install torsional damper bolt. Torque to 70 lb.
ft. (95 N·m).
4. Install drive pulley(s). Torque bolts to 35 lb. ft. (48
N·m).
5. Install and adjust drive belts.

Crankcase Front Cover/

Oil Seal
Oil Seal Replacement
(Without Removing Front Cover)

REMOVAL

1. Remove torsional damper.
2. Pry seal out of cover from the front with a large
screwdriver, being careful not to distort front cov-
er or damage crankshaft.
Index
90-816462 2-695

INSTALLATION

IMPORTANT: Correct rotation oil seal must be
used to prevent oil leak.
1. Apply Quicksilver Perfect Seal to seal retainer
mating surface and apply grease to seal lips.
2. Install new seal with open end of seal inward, us-
ing crankcase front cover seal installer. Drive seal
in until it just bottoms out. Do not use excessive
force.
74529
a
a - Key In Crankshaft
b – Lobe of Bore Clears Key
3. Reinstall torsional damper as outlined.
b
74531
ENGINES - 3A - 25