Rear Crankshaft Main Bearing Seal: Service and Repair

Crankshaft Rear Oil Seal Replacement

Special Tools

J 41479 - Crankshaft Rear Oil Seal Installer

Removal Procedure




1. Remove the engine flywheel. Refer to Engine Flywheel Replacement (LS9 and LSA) Service and RepairEngine Flywheel Replacement (Except LS9 and LSA) Service and Repair.

2. Gently pry the crankshaft rear oil seal (1) from the rear cover.

Installation Procedure





Important: For proper orientation, note the installation direction of the oil seal. The oil seal is a reverse-lip design.


The part number is applied to the outside face of the seal, as shown.


1. Inspect the seal and identify the part number markings for proper orientation.





Important:

* Do not lubricate the oil seal inside diameter (ID) of the crankshaft surface.


* Do not reuse the crankshaft rear oil seal.


2. Lubricate the outside diameter (OD) of the oil seal (1) with clean engine oil.
DO NOT allow oil or other lubricants to contact the seal surface.

3. Lubricate the rear cover oil seal bore with clean engine oil.
DO NOT allow oil or other lubricants to contact the crankshaft surface.




4. Install the J 41479 - crankshaft rear oil seal installer cone (2) and bolts onto the rear of the crankshaft.

5. Tighten the bolts until snug. Do not overtighten.

6. Install the rear oil seal onto the tapered cone (2) and push the seal to the rear cover bore.

7. Thread the J 41479 - crankshaft rear oil seal installer threaded rod into the tapered cone until the tool (1) contacts the oil seal.

8. Align the oil seal onto the tool (1).

9. Rotate the handle of the tool (1) clockwise until the seal enters the rear cover and bottoms into the cover bore.

10. Remove the J 41479 - crankshaft rear oil seal installer.

11. Install the engine flywheel. Refer to Engine Flywheel Replacement (LS9 and LSA) Service and RepairEngine Flywheel Replacement (Except LS9 and LSA) Service and Repair.