Rear Crankshaft Main Bearing Seal: Service and Repair
Removal Procedure^ Tools Required
- J 28467-360 Engine Support Fixture
- J 28467-90 Engine Support Fixture Adapters
- J 34686 Rear Main Bearing Oil Seal Installer
Caution: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Install the J 28467-360, the J 28467-90 and the J 34686.
3. Remove the transmission.
4. Remove the flywheel.
5. Confirm that there is a rear main seal leak.
Important: Do not damage the crankshaft Outside Diameter (OD) surface or the chamfer while using the pry tool.
6. Insert a screwdriver or a similar tool at an angle through the dust lip.
7. Pry the seal out by moving the handle of the tool towards the end of the crankshaft pilot. Pry around the seal as required until you remove the seal.
8. Inspect the Inside Diameter (ID) of bore for nicks or burrs. Repair the bore if needed.
9. Inspect the crankshaft for burrs or nicks on the sealing surfaces. Repair or replace the crankshaft as needed.
Installation Procedure
^ Tools Required
- J 28467-360 Engine Support Fixture
- J 28467-90 Engine Support Fixture Adapters
- J 34686 Rear Main Bearing Oil Seal Installer
1. Apply engine oil to the Inside Diameter (ID) and the Outside Diameter (OD) of the new seal.
2. Slide the new seal over the mandrel until the back of the seal bottoms squarely against the collar of the tool.
3. Complete the following steps in order to install the crankshaft rear oil seal.
3.1. Align the dowel pin of the J 34686 with the dowel pin in the crankshaft.
Notice: Refer to Fastener Notice in Service Precautions.
3.2. Attach the J 34686 to the crankshaft by hand or tighten the attaching screws to 5 Nm (45 inch lbs.).
3.3. Turn the T-handle of the J 34686 so that the collar pushes the seal into the bore. Turn the handle until the collar is tight against the case. Ensure that the seal is seated properly.
3.4. Loosen the T-handle of the J 34686 until the handle comes to a stop. Ensure that the collar is in the proper position in order to install another new seal.
3.5. Remove the attaching screws.
3.6. Inspect the seal. Ensure that the seal is seated squarely in the bore.
4. Install the flywheel.
5. Install the transmission.
6. Remove the J 28467-360, the J 28467-90 and the J 34686.
7. Connect the negative battery cable.
8. Inspect for proper fluid levels.
9. Inspect for leaks.