Lucerne V8-4.6L (2008)
Timing Chain Tensioner: Service and Repair
Primary Camshaft Drive Chain Tensioner Replacement
Primary Camshaft Drive Chain Tensioner Replacement
Tools Required
J 39946 Crankshaft Socket - 4.0L and 4.6L
Removal Procedure
1. Remove the engine front cover. Refer to Engine Front Cover Replacement (See: Timing Cover/Service and Repair).
2. Align the primary timing marks (1) using the J 39946.
3. Remove the 2 bolts attaching the primary camshaft drive chain tensioner to the engine block.
4. Remove the primary camshaft drive chain tensioner, allowing the tensioner to expand as you remove it.
5. Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection ().
Installation Procedure
1. Collapse the primary camshaft drive chain tensioner using the following procedure:
1. Rotate the ratchet release lever (2) clockwise and hold.
2. Collapse the tensioner shoe (1) and hold.
3. Release the ratchet lever (2).