Camshaft Bearing Housing - Installation

INSTALLATION

Special Tools:










1. 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.).





2. If removed, apply engine oil to the O-ring seal and install the Camshaft Position (CMP) sensor (1) with bolt (2) tightened to 9 Nm (80 in. lbs.).





3. Install two camshaft bearing housing locating pins (2).
4. Install the camshaft bearing housing gasket (1).





5. Install the camshaft bearing housing with ten bolts. Tighten the ten bolts in three steps following the sequence shown:
- Step 1: All to 7 Nm (62 in. lbs.).
- Step 2: Positions 1 through 8 to 25 Nm (18 ft. lbs.).
- Step 3: Positions 9 and 10 to 30 Nm (22 ft. lbs.).





6. Install the oil level indicator tube (1). Tighten the bolt (2) to 9 Nm (80 in. lbs.).





7. Connect and lock the Camshaft Position (CMP) sensor electrical connector (1).





8. Install the three variable valve actuation assembly locating pins (2).
9. Install the variable valve actuation assembly gasket (1).





10. 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.

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





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





14. Install the variable valve actuation assembly with the spring compressor in place. Install and hand tighten the retaining bolts.
15. 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.).





16. Connect and lock the four variable valve timing actuator electrical connectors.
17. Connect and lock the oil temperature sensor electrical connector (1).
18. Engage the oil temperature electrical connector to the bracket (2).






NOTE: If the hydraulic lifters are being reused, reassemble them into their original locations.

19. Verify that the hydraulic lifters are at least partially full of oil. There should be little or no plunger travel when the hydraulic lifter is depressed.
20. Install the hydraulic lifter(s) (1).
21. Install the camshaft(s) Camshaft - Installation
22. Connect the negative battery cable and tighten nut to 5 Nm (45 in. lbs.).

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 .