Extension Housing Gasket - F-Super Duty: Installation

All vehicles 

NOTE: The extension must have a shoulder or a boss cast in it to hold the orifice lube plug in the back of the case. If the wrong extension housing is used, the plug may become loose and/or fall out and cause transmission damage.
NOTE: Lightly lubricate the gasket with petroleum jelly to hold it in place during assembly.
1. Install the new extension housing gasket.
   1. Verify that the extension has a shoulder cast in it.
   2. Install the new extension housing gasket.
      Fig 1: Installing New Extension Housing Gasket

      Courtesy of FORD MOTOR CO.
2. Install the extension housing bolts.
   Fig 2: Installing Extension Housing Bolts

   Courtesy of FORD MOTOR CO.
3. Connect the output shaft speed (OSS) sensor.
   Fig 3: Connecting Output Shaft Speed (OSS) Sensor

   Courtesy of FORD MOTOR CO.
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.
4. Install the rear transmission mount.
   1. Raise the transmission up.
   2. Install the rear transmission mount.
   3. Install the bolts.
      Fig 4: Installing Rear Transmission Mount

      Courtesy of FORD MOTOR CO.
5. Lower the transmission on to the rear crossmember support.
   Fig 5: Identifying Lower The Transmission On-The Rear Crossmember

   Courtesy of FORD MOTOR CO.
6. Install the transmission insulator and nuts.
   Fig 6: Installing Transmission Insulator And Nuts

   Courtesy of FORD MOTOR CO.
7. Remove the transmission jack from the transmission.
8. Install the driveshaft. Refer to DRIVESHAFT .

   4x4 vehicles 

9. Install the transfer case. Refer to TRANSFER CASE .

   All vehicles 

10. Check fluid level, fill with clean automatic transmission fluid.
11. Check for correct operation.