Tools Required

EN 46108 Timing Chain Retention Tool

1. Remove the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement .
2. Remove the camshaft cover. Refer to Camshaft Cover Replacement - Right Side .
3. Remove the camshaft sensors. Refer to Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust and Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake .
4. Remove the intake camshaft position actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake .




Important: Rotate the crankshaft balancer in a clockwise rotation ONLY.

5. Rotate the crankshaft using the crankshaft balancer bolt until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail (1).

Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.





Important: 

•	Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

•	DO NOT remove the camshaft position actuator bolt at this time.

6. Loosen the camshaft position actuator bolt.

Important: Ensure that the tips of the EN 46108 are fully engaged into the timing chain (3 and 4).




7. Install the EN 46108 (1 and 2) in order to retain the timing chain.

Firmly tighten the EN 46108 nuts.





Important: Ensure that the camshaft timing chain and the camshaft position actuators are marked for proper assembly.

8. Mark the timing chain and the respective locations on camshaft position actuators (15-18).
9. Remove the right exhaust camshaft position actuator bolt.
10. Remove the right exhaust camshaft actuator.

Important: 

•	Ensure that the marks on the camshaft position actuators and the timing chain (15-18) are aligned.

•	DO NOT tighten the camshaft position actuator bolt at this time.

1. Assemble the camshaft actuator to the camshaft.
2. Loosely install the camshaft actuator bolt.
3. Remove the EN 46108 .

Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.





Important: Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

4. Tighten the camshaft position actuator. Refer to Camshaft Position Actuator Installation - Right Side Exhaust.
5. Install the crankshaft balancer. Refer to Crankshaft Balancer Installation .
6. Install the intake camshaft position actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake .
7. Install the camshaft sensors. Refer to Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust and Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake .
8. Install the camshaft cover. Refer to Camshaft Cover Replacement - Right Side .
9. Install the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement .