Transfer Case Output Shaft Seal Replacement (Front)

Removal Procedure





1. Raise the vehicle. Refer to Vehicle Lifting.
2. If equipped, remove the transfer case shields. Refer to Shield Replacement.
3. Remove front propeller shaft. Refer to Propeller Shaft Replacement (Front Drive) in Propeller Shaft.
4. Remove the front output shaft seal.
^ Remove the inner sleeve of the seal first in order to remove the seal from the transfer case
^ Remove the outer area of the seal after removal of the inner sleeve of the seal.


Installation Procedure

^ Tools Required
- J 43484 Front Output Shaft Seal Installer (midyear 1999 and later seal)J 35870 Front Output Shaft Seal Installer (start of production to midyear 1999 seal)





1. Install the seal.
1.1. Lubricate the seal mating surfaces with Dexron III oil GM P/N 12346143.
1.2. Install the seal using the J 35870 for installation of start of production to midyear 1999 seal, or J 43484 for installation of midyear 1999 and later seal.
1.3. Ensure the seal is positioned straight during installation.
2. Check the transfer case oil level and add oil as necessary. Refer to Oil Replacement.
3. Install the front propeller shaft. Refer to Propeller Shaft Replacement (Front Drive) in Propeller Shaft.
4. If equipped, install the transfer case shields. Refer to Shield Replacement.
5. Lower the vehicle.