Special Tools

1. Remove the transmission. Refer to Transmission Replacement in Automatic Transmission - Allison or Transmission Replacement in Manual Transmission - ZF S6-650.
2. Remove the flywheel assembly. Refer to Engine Flywheel Replacement - Automatic Transmission or Engine Flywheel Replacement - Manual Transmission.
3. Clean the area around the crankshaft rear oil seal.



4. Install the button of J 44641 into the crankshaft.
5. Press the jaws of J 44641 into the felt portion of the seal far enough to engage the inner lip of the seal.
6. While holding the jaws of J 44641 tightly to the seals inner sleeve, tighten the jaw bolts.
7. Remove the crankshaft rear oil seal using the J 44641 .

1. Clean the crankshaft of oil and dirt.
2. Clean the seal bore in the flywheel housing.
3. Place the crankshaft rear oil seal onto the crankshaft.

Important: The J 44642 must be fully secured to the crankshaft to ensure proper seal depth.

4. Install the J 44642 to the crankshaft.
5. Press the crankshaft rear oil seal into position using the J 44642 . The J 44642 will bottom out when the seal reaches the proper depth.
6. Remove the J 44642 .
7. Install the flywheel assembly. Refer to Engine Flywheel Replacement - Automatic Transmission or Engine Flywheel Replacement - Manual Transmission.
8. Install the transmission. Refer to Transmission Replacement in Automatic Transmission - Allison or Transmission Replacement in Manual Transmission - ZF S6-650.