Tools Required

J 21426 Extension Housing Seal Installer

Caution: Refer to Safety Glasses Caution in the Preface section.

Caution: Refer to Vehicle Lifting Caution in the Preface section.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Place a drain pan under the vehicle.



3. Remove the propeller shaft. Refer to Propeller Shaft Replacement .
4. Remove the transmission extension housing rear oil seal. Use a flat-bladed tool and carefully pry the seal from the housing.
5. Inspect the case extension housing for damage. Replace the extension housing if necessary. Refer to Case Extension Assembly Replacement .

1. Lubricate the inside diameter of the new seal with J 36850 .
2. Use the J 21426 with a soft faced mallet to install the seal.
3. Install the seal to the extension housing.
4. Install the propeller shaft. Refer to Propeller Shaft Replacement .
5. Remove the drain pan and lower the vehicle.
6. Fill the transmission to the proper level with DEXRON® VI transmission fluid. Refer to Transmission Fluid Check .