30. Crankshaft Rear Oil Seal Removal

Crankshaft Rear Oil Seal Removal


Tools Required
* EN-48672 Rear Main Oil Seal Remover
* J 23444-A Extreme Press Lubricant - 1/4 Ounce Tube






The EN-48672 has a unique design to allow the technician to easily remove the rear main seal without nicking the crankshaft sealing surface when removing the seal. Before proceeding with removal, review the illustration to become familiar with the following components:

* Removal Plate (1)
* Threaded Adjustment Pins and Jam Nuts (2)
* Force Screw (3)
* #2 Self Drill Screws 38 mm (1.5 in) long 8 needed (4)
* Extreme Pressure Lubricant (5)


1. Remove the transmission. Refer to Transmission Replacement (3.5L (LZ4) W/MN5) (Removal and Replacement).
2. Remove the engine flywheel. Refer to Engine Flywheel Replacement (Service and Repair).




3. Install the removal plate (2) and both threaded adjustment pins and jam nuts (1) into the back of the crankshaft flange and secure the plate with adjustment pins and jam nuts.




4. Install the #2 self drill screws 38 mm (1.5 in) long, 8 needed (1) and tighten the screws down flush to the plate.





Important: Before installing the force screw, apply a small amount of the extreme pressure lubricant J 23444-A, provided in the tool kit.


5. Install the force screw (1) and back off both jam nuts (2). Continue to turn the force screw (1) into the removal plate in order to remove the seal from the crankshaft.




6. Once the seal is removed from the crankshaft, remove and save all 8 screws. Discard the old seal.