Variable Valve Actuation Assembly - Installation

INSTALLATION

Special Tools:

1. If removed, install the oil temperature sensor (1) Oil Temperature Sensor - Installation. Tighten the oil temperature sensor to 18 Nm (13 ft. lbs.).

2. If removed, install a new O-ring (1) lubricated with engine oil on the MultiAir actuator oil supply filter (2). Install the filter into the camshaft bearing housing and tighten to 27 Nm (20 ft. lbs.).

3. Install three variable valve actuation assembly locating pins (2).
4. Install the variable valve actuation assembly gasket (1).

5. If removed, install the rocker arms (1) Valve Rocker Arm - Installation.

CAUTION: Do not invert the variable valve actuation assembly when it is removed from the engine. Oil will drain from the assembly and excessive engine cranking will be required to refill the assembly and start the engine.

6. If removed, install the (10259) (2) with four bolts (1) tightened to 9 Nm (80 in. lbs.).
7. Rotate the spring compressors (3) CCW until fully seated.

8. Install the variable valve actuation assembly O-ring (1).

9. Install the variable valve actuation assembly with the spring compressor in place. Install and hand tighten the retaining bolts.
10. Remove the spring compressor and tighten the ten bolts in three steps following the sequence shown:
- Step 1: All to 10 Nm (89 in. lbs.).
- Step 2: All to 22 Nm (16 ft. lbs.).
- Step 3: All again to 22 Nm (16 ft. lbs.).

11. Connect and lock the four variable valve timing actuator electrical connectors.
12. Connect and lock the oil temperature sensor electrical connector (1).
13. Engage the oil temperature electrical connector to the bracket (2).

14. Install the cylinder head cover (1) Cylinder Head Cover(s) - Installation.

NOTE: The Cam/Crank Variation Relearn procedure must be performed using the scan tool anytime there has been a repair/replacement made to a powertrain system, for example: flywheel, valvetrain, camshaft and/or crankshaft sensors or components PCM/ECM Reprogramming .