Sierra Classic 3500 4WD V8-8.1L (2007)
Crankshaft Main Bearing Seal: Service and Repair
Crankshaft Rear Oil Seal Replacement
Tools Required
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J 43320 Crankshaft Rear Seal Puller
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J 42849 Crankshaft Rear Seal Installer
Removal Procedure
1. Remove the flywheel.
2. Install the guide pins from J 43320 into the crankshaft.
3. Install the J 43320 over the guide pins.
4. Using a suitable drill, insert eight of the self-drilling sheet metal screws into the rear crankshaft seal, using a crisscross pattern. The self-tapping
screws are included with the J 43320.
