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Mercury 305 CID User Manual

Mercury 305 CID
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ENGINES - 3A-5190-823225--1 1096
Rear Main Oil Seal
The rear crankshaft oil seal can be replaced without
removing the oil pan or rear main bearing cap from
engine.
Removal
Remove seal by using a screwdriver to pry it out of
retainer as shown.
72355
a - Rear Seal
b - Seal Retainer
c - Slots (Three)
b
c
a
Cleaning and Inspection
Clean crankshaft/seal running surface and seal re-
tainer.
IMPORTANT: Correct rotation oil seal must be
used to prevent oil leak.
73126
a - Can Be Used on Any Rotation Engine
b - Seal Lip Toward Inside of Engine
Rear Seal WITHOUT Helical Grooves
a
b
73127
a - MCM and MIE (LH) Rotation Engines
d
a
c
73128
b - MIE (RH) Rotation Engines
c - Seal Lip Toward Inside of Engine
d - Rotation of Crankshaft as Viewed from
Flywheel End Looking Forward
Rear Seal WITH Helical Grooves
b
c
d

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Mercury 305 CID Specifications

General IconGeneral
BrandMercury
Model305 CID
CategoryEngine
LanguageEnglish

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