Tools Required

1. Remove the left secondary camshaft tensioner (2). Refer to Secondary Camshaft Drive Chain Tensioner Replacement - Left Side .
2. Remove the left camshaft position actuator housing. DO NOT remove the camshaft sensors from the housing. Refer to Camshaft Position Actuator Housing Replacement - Left Side .



3. Using the J 39946 (1) , rotate the crankshaft until both camshaft position actuator timing marks are at the top of their rotation.

Caution: Refer to Camshaft Holding Tool Caution in the Preface section.




4. Install the EN 46328 (2) .




Important: The secondary timing chain has black links that are used for alignment when the primary and secondary timing gear and chain assemblies are being installed together. IT IS NOT NECESSARY for the black chain links to be aligned with the camshaft actuator timing marks when the secondary chain and gear components are being serviced separately.

5. Use a paint stick to create a mark on the timing chain link (1) adjacent to each camshaft position actuator timing mark (3).
6. Use a paint stick to create a mark on a primary chain link and intermediate primary chain sprocket tooth adjacent to the primary chain link.



7. Use an open end wrench on the hex cast into the right intake camshaft to prevent the camshaft from rotating when loosening the camshaft oil control valve.



8. Loosen and remove the left exhaust oil control valve.
9. Slide the left exhaust camshaft actuator off of the camshaft, disengage the sprocket teeth from the secondary timing chain, and remove the actuator.



10. Remove the upper left secondary camshaft drive chain guide bolt.



11. Remove the lower right secondary camshaft drive chain guide bolt.



12. Remove the left secondary camshaft drive chain guide.
13. Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection .

1. Position the left secondary camshaft drive chain guide in through the left front cylinder head as shown.

Notice: Refer to Fastener Notice in the Preface section.




2. Install the left secondary camshaft drive chain guide bolts.

Tighten
Tighten the secondary camshaft drive chain guide bolts to 25 N·m (18 lb ft).




3. Install the left secondary camshaft drive chain tensioner. Refer to Secondary Camshaft Drive Chain Tensioner Replacement - Left Side .
4. Install the left exhaust camshaft actuator. Refer to Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust .



5. Ensure that the previously created paint marks (1, 3) still line up with the sprocket timing marks (2, 4).