DTS V8-4.6L VIN Y (2006)
Camshaft Gear/Sprocket: Service and Repair
Primary Camshaft Drive Chain and Sprockets Replacement
Tools Required
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J39946 Crankshaft Socket-4.0L and 4.6L
Removal Procedure
1. Remove the oil pump.
2. Align the primary timing marks (1) using the J39946.
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
1. Align the timing marks (1) of the camshaft intermediate and crankshaft sprockets. The marks should be aligned vertically in the installed position.
2. Install the primary camshaft drive chain on the drive sprockets.
3. Make sure that the number 1 piston is at top dead center (TDC) and the crankshaft keyway is approximately at the 1 o'clock position.