Left Cylinder Head

LEFT

Special Tools:











CAUTION:
The magnetic timing wheels (1) must not come in contact with magnets (pickup tools, trays, etc.) or any other strong magnetic field. This will destroy the timing wheels ability to correctly relay camshaft position to the camshaft position sensor.

1. Perform the fuel pressure release procedure Service and Repair.

2. Disconnect and isolate the negative battery cable.





3. Remove the air intake resonator assembly Removal.





NOTE:
Right catalytic converter shown, left catalytic converter similar.

4. Raise and support the vehicle Service and Repair.

5. Drain the cooling system Service and Repair.

6. Drain the engine oil Service and Repair.

7. Disconnect the left upstream (3) and downstream (1) oxygen sensor connectors from the main wire harness.

8. Remove the left catalytic converter Catalytic Converter - Removal.





9. Lower the vehicle.

10. Remove the upper and lower intake manifolds (2) and insulator Removal and Replacement





11. Remove the right and left cylinder head covers Service and Repair.





12. Remove the accessory drive belt (1) Service and Repair





13. Remove the bolts (4) and nuts (3). Reposition the A/C compressor (1).





14. Disconnect the ignition coil capacitor electrical connector (1).





15. Remove the two studbolts (3) and remove the left rear upper intake manifold support bracket (1).





16. Remove the spark plugs Service and Repair.

17. Remove the upper oil pan, crankshaft vibration damper and engine timing cover Engine Timing Cover(s) - Removal

NOTE:
Take this opportunity to measure timing chain wear Measuring Timing Chain Wear.

18. Lower the vehicle.





CAUTION:
When aligning timing marks, always rotate engine by turning the crankshaft. Failure to do so will result in valve and/or piston damage.

19. Rotate the crankshaft CW to place the number one piston at TDC on the exhaust stroke by aligning the dimple (4) on the crankshaft with the block/bearing cap junction (5). The left side cam phaser arrows (2) should point toward each other and be parallel to the valve cover sealing surface (3). The right side cam phaser arrows (7) should point away from each other and the scribe lines (9) should be parallel to the valve cover sealing surface (8).

CAUTION:
Always reinstall timing chains so that they maintain the same direction of rotation. Inverting a previously run chain on a previously run sprocket will result in excessive wear to both the chain and sprocket.

20. Mark the direction of rotation on the timing chain using a paint pen or equivalent to aid in reassembly.





CAUTION:
When the timing chains are removed and the cylinder heads are still installed, DO NOT rotate the camshafts or crankshaft without first locating the proper crankshaft position. Failure to do so will result in valve and/or piston damage.

21. Reset the LH cam chain tensioner by lifting the pawl (1), pushing back the piston (2) and installing Tensioner Pin (8514) (3) Service and Repair.





NOTE:
Minor rotation of a camshaft (a few degrees) may be required to install the camshaft phaser lock.

22. Install the LH Camshaft Phaser Lock (10202) (4).

23. Loosen both the intake oil control valve (6) and exhaust oil control valve (2).

24. Remove the LH Camshaft Phaser Lock (10202) (4).

25. Remove the oil control valve (2) from the left side exhaust cam phaser and pull the phaser off of the camshaft.

26. Remove the oil control valve (6) from the left side intake cam phaser and pull the phaser off of the camshaft.





27. Remove the LH cam chain tensioner arm (1).

28. Remove two T30 bolts (6) and the LH cam chain tensioner (5).

29. Remove two T30 bolts (4) and the LH cam chain guide (2).





30. Remove the left camshafts Camshaft - Removal

NOTE:
If the rocker arms are to be reused, identify their positions so that they can be reassembled into their original locations.

31. Remove the rocker arms Valve Rocker Arm - Removal

NOTE:
If the hydraulic lifters are to be reused, identify their positions so that they can be reassembled into their original locations.

32. If required, remove the hydraulic lifters Hydraulic Lifters - Removal

33. Using the sequence shown, remove the cylinder head retaining bolts.





NOTE:
Right head gasket shown, left head gasket similar.

WARNING:
The multi-layered steel head gaskets have very sharp edges that could cause personal injury if not handled carefully.

NOTE:
The head gasket (1) crimps the locating dowels (2) and the dowels may pull out of the engine block when the head gasket is removed.

34. Remove the cylinder head and gasket (1). Discard the gasket.

CAUTION:
Do not lay the cylinder head on its gasket sealing surface, due to the design of the cylinder head gasket, any distortion to the cylinder head sealing surface may prevent the gasket from properly sealing resulting in leaks.







35. If required, remove the Engine Coolant Temperature (ECT) sensor (3).

36. If required, remove the bolt (2) and the ignition coil capacitor (1).