Tremec 6-Speed - Manual Transmission

Mainshaft Rear Oil Seal Replacement

Tools Required

* J 6125-1B Slide Hammer
* J 23129 Universal Seal Remover
* J 29873 Injector Nozzle Socket 30 mm
* J 44765 Seal Installer
* J 45012 Holding Fixture
* J 45019 Flange and Pinion Gage Remover

Removal Procedure




1. Place the transmission in neutral.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Remove the propeller shaft (6).




4. Install the J 45012 to the drive flange.
5. While holding the J 45012, remove the flange nut using the J 29873.
6. Remove the J 45012.




7. Remove the drive flange thrust washer.
8. Remove the drive flange using the J 45019.




9. Use the J 6125-1B and J 23129 to remove the transmission case extension seal (1).

Installation Procedure





Important: Install the seal onto the tool before installing into the case to prevent damage to the seal.

1. Using J 44765 install the new transmission case extension seal (1).




2. Install the drive flange to the transmission output shaft.
3. Install a NEW drive flange thrust washer.




4. Install the J 45012 to the drive flange.

Notice: Refer to Fastener Notice.

5. While holding J 45012, install a NEW drive flange nut using J 29873.

Tighten the drive flange nut to 57 N.m (42 lb ft).

6. Remove the J 45012 from the drive flange.




7. Install the propeller shaft (6).
8. Lower the vehicle.