Crankshaft Main Bearing: Service and Repair

Crankshaft Rear Oil Seal Replacement

^ Tools Required
- J 34686 Rear Main Bearing Oil Seal Installer

Removal Procedure





1. Remove the engine flywheel.

Notice: Do not damage the crankshaft surface when prying out the crankshaft rear oil seal.

2. Remove the crankshaft rear oil seal. Pry the crankshaft rear oil seal out with a suitable pry tool.
3. Clean the crankshaft rear oil seal to engine block mating surface.
4. Inspect the following areas:
^ Inspect the seal bore for nicks
^ Inspect the seal bore for burrs
^ Inspect the seal mating surface on the crankshaft for nicks

Installation Procedure





1. Install the crankshaft rear oil seal.
2. Lubricate the seal bore to seal mating surface with engine oil.
3. Slide a new crankshaft rear oil seal onto tool J 34686. The dust lip of the crankshaft rear oil seal should be flush against the J 34686 tool collar.
4. Align the dowel pin of the tool J 34686 with the dowel pin hole in the crankshaft.

Notice: Refer to Fastener Notice in Service Precautions.

5. Attach tool J 34686 to the crankshaft by tightening the attaching screws.
^ Tighten the J 34686 attaching screws to 3 - 7 Nm (27 - 62 lb in).
6. Tighten the T handle of the J 34686. This will push the crankshaft rear oil seal into position. Be sure that the J 34686 collar is flush against the engine block.
7. Loosen the T handle completely.
8. Remove the J 34686 attaching screws.
9. Remove the J 34686 tool from the engine block.
10. Make sure that the crankshaft rear oil seal is seated squarely in the bore.
11. Install the engine flywheel.