Sierra Classic 2500 4WD V8-8.1L (2007)
Timing Chain: Service and Repair
Timing Chain and Sprockets Replacement
Tools Required
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J 22102 Crankshaft Sprocket Installer
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J 42846 Crankshaft Protector Button
Removal Procedure
1. Remove the engine front cover.
2. Aligned the timing marks on the camshaft and crankshaft sprockets.
3. Remove the camshaft sprocket bolts.
4. Remove the camshaft sprocket and timing chain.
5. Install the J 42846 (1) into the end of the crankshaft.
6. Remove the crankshaft sprocket using a suitable three jaw puller.
7. Clean and inspect the timing chain and sprockets. Refer to Timing Chain and Sprockets Cleaning and Inspection.
Installation Procedure
