Extension Housing Gasket

Extension Housing Gasket-Excursion





Removal

NOTE: The 4x2 application is shown, the 4x4 application is similar.

All vehicles
1. Raise the vehicle on a hoist.

4x4 vehicles
2. Remove the transfer case.

All vehicles
3. Remove the driveshaft.





4. Remove the rear transmission mount brace nuts.





5. CAUTION: Be sure not to raise the back of the transmission too high. If it makes contact with the underbody, damage to the TSS and OSS sensors will occur.

Remove the rear transmission brace.
1 Raise the transmission to gain access to the rear transmission brace nuts.
2 Remove the transmission brace.





6. NOTE: It will be necessary to remove the bolts from the transmission mount in order to get the transmission brace out. The transmission mount and brace must come out together.

Remove the two nuts from the transmission mount and remove the mount anti the brace.





7. Disconnect the Output Shift Speed (OSS) sensor.





8. Lower the transmission to gain access to the bolts. Remove the bolts and the extension housing.
9. Remove and discard the extension housing gasket.

Installation





All vehicles

1. NOTE: The extension housing must have a shoulder or a boss cast into it to hold the orifice lube plug in the back of the transmission case.

NOTE: If the wrong extension housing is used, the orifice lube plug may become loose and/or fall out and cause transmission damage.

NOTE: Lightly lubricate the extension housing gasket with petroleum jelly to hold it in plan e during assembly.

Install the extension housing.





2. Connect the Output Shaft Speed (OSS) sensor.





3. NOTE: It will be necessary to install the rear mount and rear brace at the same time and install the bolts for the rear mount.

Install the rear transmission mount and rear brace. Install the bolts into the rear transmission mount.





4. Install the nuts for the rear transmission brace and lower the transmission onto the crossmember.





5. Install the nuts for the transmission rear brace.
6. Remove the transmission jack from the transmission.
7. Install the driveshaft.

4x4 vehicles
8. Install the transfer case.

All vehicles
9. Lower the vehicle.
10. Check fluid level, fill with clean automatic transmission fluid.
11. Check for correct operation.