Extension Housing: Service and Repair

Extension Housing Seal and Gasket





Special Tool(s)

Removal
1. Drain the transmission fluid.





2. NOTE: The output shaft and driveshaft are a balanced assembly.

Mark the driveshaft flange and the rear companion flange for correct alignment during assembly.





3. Remove the four driveshaft bolts.





4. Separate the driveshaft from the transmission.
5. Use a high-lift transmission jack to support the transmission,





6. Remove the transmission crossmember bolts.





7. Remove the transmission mount and crossmember.





8. Using the special tools, remove the extension housing seal.
9. Lower the transmission to access the extension housing bolts.





10. Remove the extension housing and gasket.
1 Remove the bolts and the nuts.
2 Remove the extension housing and gasket.

Installation





1. Install the extension housing and gasket.
1 Install the extension housing gasket and housing.
2 Install the bolts and the nuts.





2. Using the special tool, install the new extension housing seal.
3. Raise and position the transmission.





4. Install the transmission mount and crossmember.





5. Install the transmission crossmember bolts.
6. Remove high-lift transmission jack.





7. NOTE: The output shaft and the driveshaft are a balanced assembly.

Install the driveshaft.
^ Align the yellow dots and position the driveshaft on the transmission.
^ Install the driveshaft.





8. NOTE: To maintain driveshaft balance, align the marks made during disassembly for the rear axle flange and the driveshaft yoke.

Install the four bolts.
9. Install the filter and pan.