Bonneville V8-4.6L VIN Y (2004)
Timing Chain: Service and Repair
Primary Camshaft Drive Chain and Sprockets Replacement
Primary Camshaft Drive Chain and Sprockets Replacement
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Tools Required
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J 39946 Crankshaft Socket - 4.0L and 4.6L
Removal Procedure
1. Remove the oil pump.
2. Align the primary timing marks (1) using the J 39946.
3. Remove the secondary camshaft drive chains.
4. Remove the primary drive chain tensioner.
5. Remove the camshaft intermediate sprocket retaining bolt (3).
6. Remove the following as an assembly:
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The primary camshaft drive chain (4)
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The crankshaft sprocket
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The camshaft intermediate sprocket
7. Clean and inspect the camshaft timing drive components.
Installation Procedure
