Mercury MERCRUISER - Rear Oil Seal; Removal

2. Remove the retaining clips and remove the piston pin.
a - Connecting rod
b - Piston
c - Piston pin
d - Piston pin retaining clip (2)
3. Mark, separate, and organize parts so that they can be installed in the same locations.
Rear Oil Seal
Removal
The rear main crankshaft oil seal can be replaced without removing the oil pan or the rear main bearing cap from the engine.
1. Remove the flywheel.
2. Remove the seal by carefully using a screwdriver to pry it out of the engine block as shown.
a - Rear main seal
IMPORTANT: Do not nick or gouge the engine block or the rear main bearing cap sealing surface. Protect the crankshaft to
seal running surface from damage.
a
b
c
d
47994
55069
a
Engine Disassembly
Page 3A-38 © 2016 Mercury Marine 90-8M0099748 eng DECEMBER 2015