Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
Crankshaft Main Bearing Seal: Service and Repair
Crankshaft Rear Oil Seal Replacement
Tools Required
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J 44641 Crankshaft Rear Oil Seal Remover
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J 44642 Crankshaft Rear Oil Seal Installer
Removal Procedure
1. Remove the flywheel.
2. Clean the area around the crankshaft rear oil seal.
3. Install J 44641 to the crankshaft rear oil seal.
4. Remove the crankshaft rear oil seal using J 44641.
Installation Procedure
1. Ensure that the crankshaft is free of oil and dirt.
2. Clean the seal bore in the flywheel housing.
3. Position the crankshaft rear oil seal onto the crankshaft.
Important: J 44642 must be fully secured to the crankshaft to ensure proper seal depth.
4. Install J 44642 to the crankshaft.
5. Press the crankshaft rear oil seal into position using J 44642, the tool will bottom out when the seal reaches the proper depth.
6. Remove J 44642.
7. Install the flywheel.
