Crankshaft Seal Retainer: Service and Repair

Removal Procedure

- Tools Required
- J41476 Front/Rear Cover Alignment (Crankshaft Oil Seal Area)





1. Remove the flywheel.
2. Remove the engine rear cover-to-engine block bolts.
3. Remove the engine rear cover-to-oil pan bolts.
4. Remove the rear cover and gasket.
5. Discard the rear cover gasket.
6. Remove the crankshaft rear oil seal from the cover.
7. Discard the oil seal.

Installation Procedure

Important:
- Do not reuse the crankshaft oil seal or rear cover gasket.
- Do not slide the rear cover gasket across the oil pan gasket.
- The special tool in this procedure is used to properly align the crankshaft rear oil seal.
- The crankshaft rear oil seal MUST be centered in relation to the crankshaft.
- An improperly aligned rear cover may cause premature rear oil seal wear and/or engine assembly oil leaks.

1. Apply a 5 mm (0.20 inch) bead of GM P/N 12378190 to the corner were the oil pan meets the engine block.





2. Install the rear cover, gasket and bolts to the engine.
3. Tighten the cover bolts finger tight. Do not overtighten.





Important: To properly align the rear cover, J41476 must be installed onto the rear of the crankshaft with the tool mounting bolts parallel to the oil pan surface.

4. Rotate the crankshaft until the two opposing flywheel bolt holes are parallel to the oil pan surface.

Notice: Refer to Fastener Notice in Service Precautions.





5. Install J41476 and bolts onto the rear of the crankshaft.
5.1. Tighten the tool retaining bolts by hand until snug. Do not overtighten.
5.2. Snug the oil pan-to-cover bolts to position the cover to the pan rail.
5.3. Tighten the oil pan-to-rear cover bolts to 12 Nm (106 inch lbs.).
5.4. Tighten the rear cover bolts to 25 Nm (18 ft. lbs.).
6. Remove J41476 from the crankshaft.
7. Install the rear crankshaft oil seal.
8. Install the flywheel.