Variable Valve Timing Actuator: Service and Repair

Camshaft Position Exhaust Actuator Replacement

Tools Required
* J 44217 Timing Chain Retention Tool
* J-44217-45 Chain Holding Tool
* J 44221 Camshaft Holding Tool
* J 45059 Angle Meter

Removal Procedure

1. Remove the camshaft cover. Refer to Camshaft Cover Replacement (Service and Repair).
2. Ensure the exhaust CMP actuator is functioning properly. Refer to Camshaft Position Actuator Diagnosis (Component Tests and General Diagnostics).
3. Remove the exhaust CMP sensor. Refer to Camshaft Position Sensor Replacement - Exhaust (Service and Repair).
4. Remove the intake CMP sensor. Refer to Camshaft Position Sensor Replacement - Intake (Service and Repair).
5. Rotate the crankshaft in the engine rotational direction clockwise, until the #1 piston is at top dead center (TDC) on the compression stroke.
6. Using the timing mark on the exhaust camshaft position actuator sprocket as a reference, make a mark on the timing chain link adjacent to it.




Caution: Refer to Camshaft Holding Tool Caution (Camshaft Holding Tool Caution).
7. Install the J 44221 to the rear of the camshafts.




8. Complete the following in order to install the J 44217 (1) and J-44217-45 (1).

1. Install the hook portion of the timing chain retention tools into one of the timing chain links near the timing chain shoe on both sides of the engine.
2. Tighten the wingnuts.
3. Ensure the hooks are still in one of the links and the gage blocks of the tool are firmly in place on the edge of the head.




9. Remove and discard the exhaust camshaft position actuator bolt.
10. Remove the exhaust camshaft position actuator.

Installation Procedure

1. Ensure the camshaft actuator is fully advanced prior to installation.




2. Install the exhaust camshaft actuator into the timing chain.
Aligning the marked link (1) on the timing chain with the timing mark (1) on the exhaust camshaft position actuator sprocket.

Important:
* To aid in aligning the actuator to the camshaft, use a 25 mm (1 in) wrench on the hex of the camshaft to rotate.

* Ensure the alignment pin is properly engaged with the camshaft.


3. Install the exhaust camshaft actuator onto the exhaust camshaft.





Notice: Refer to Fastener Notice (Fastener Notice).

4. Install the new exhaust camshaft actuator bolt.

Tighten the bolt to 25 N.m (18 lb ft) plus an additional 135 degrees using the J 45059 .




5. Remove the J 44217 (1) and J-44217-45 (1).




6. Remove the J 44221 from the camshafts.
7. Install the intake CMP sensor. Refer to Camshaft Position Sensor Replacement - Intake (Service and Repair).
8. Install the exhaust CMP sensor. Refer to Camshaft Position Sensor Replacement - Exhaust (Service and Repair).
9. Install the camshaft cover. Refer to Camshaft Cover Replacement (Service and Repair).