454 CID (7.4L) / 502 CID (8.2L) SERVICE MANUAL NUMBER 23
Page 3A-60
90-861326--1 MARCH 1999
Rear Main Oil Seal
The rear crankshaft oil seal can be replaced without removing the oil pan or rear main bear-
ing cap from engine.
Removal
Remove seal by using a screwdriver to pry it out of engine block as shown.
72559
a
a-Rear Main Seal (Crankshaft Oil Seal)
IMPORTANT: Do not nick or gouge the engine block or rear main bearing cap sealing
surface. Protect end of crankshaft and crankshaft/seal running surface from
damage, also.
Cleaning and Inspection
Clean crankshaft/seal running surface and seal retainer.
IMPORTANT: Correct rotation oil seal must be used to prevent oil leak.
73126
a
Rear Seal WITHOUT Helical Grooves
a-Seal Lip Toward Inside Of Engine
72618
b
a
Rear Seal WITH Helical Grooves
a-Seal Lip Toward Inside Of Engine
b-Rotation of Crankshaft As Viewed From Flywheel End Looking Forward
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