Mercury 305 CID - Crankcase Front Cover; Crankcase Front Cover;Oil Seal; Oil Seal Replacement (Without Removing Front Cover)

ENGINES - 3A-4790-823225--1 1096
Crankcase Front Cover/
Oil Seal
Oil Seal Replacement
(Without Removing Front Cover)
IMPORTANT: The following information refers to
all engines except Gen+ Engines. Crankcase
front cover is not reusable per G.M. Specifica-
tion. It must be replaced if removed.
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.
INSTALLATION
IMPORTANT: Correct rotation oil seal must be
used to prevent oil leak.
73123
a - Can Be Used on Any Rotation Engine
b - Seal Lip Toward Inside of Engine
Front Seal WITHOUT Helical Grooves
b
a
73124
a - MCM and MIE (LH) Rotation Engines
c
d
a
73125
b - MIE (RH) Rotation Engines
c - Seal Lip Toward Inside of Engine
d - Rotation of Crankshaft as Viewed from
Front End Looking Toward Flywheel End
Front Seals WITH Helical Grooves
b
c
d
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 exces-
sive force.
72347
a - Crankcase Front Cover Seal Installer (J-35468)
a
3. Reinstall torsional damper as outlined.