Extension Housing: Service and Repair

Extension Housing Seal and Bushing

Extension Housing Seal and Bushing:

Removal
1. With the vehicle in NEUTRAL, position it on a hoist.

2. NOTE: To maintain initial driveshaft balance, mark the rear driveshaft yoke and axle flange so they can be installed in their original alignment.

Mark the rear driveshaft.





3. Remove the 4 rear driveshaft bolts.





4. NOTE: Do not use a hammer.

Remove the rear driveshaft from the flange using a pry bar.





5. Using the special tools, remove the extension housing seal.





6. CAUTION: Use the extension housing bushing remover carefully so that the seal area is not damaged.

Using the special tool, remove the extension housing bushing.





Installation

1. CAUTION: The lube hole in the extension housing bushing must be aligned with the lube groove in the extension housing. This groove is located at the 3 o'clock position when viewed from the rear. Failure to align the bushing can result in bushing damage.

NOTE: Inspect the counterbore of the extension housing for burrs. Remove any burrs from the extension housing counterbore with an oil stone.

Position the extension housing bushing into the extension housing.





2. NOTE: The tool will bottom when bushing is in the correct position.

Using the special tool, install the extension housing bushing.





3. Position new extension housing seal with drain hole in the 6 o'clock position.





4. Using the special tool, install the extension housing seal.





5. NOTE: Inspect the driveshaft slip-yoke for wear and damage. Install a new component if required.

Align the driveshaft with the marks made during removal to make sure of correct balance.





6. With the marks aligned, install the rear driveshaft and bolts.
^ Tighten to 103 Nm (76 lb-ft).





7. Fill the transmission to the correct fluid level with clean automatic transmission fluid and check for correct transmission operation.