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. Raise and support the vehicle Maintenance.
4. Remove the belly pan.
5. Drain the cooling system Service and Repair.
6. Drain the engine oil Service and Repair.





7. Lower the vehicle.
8. Remove the engine cover (1).
9. Recover the refrigerant from the refrigerant system Refrigerant System Recovery.





10. Remove the air cleaner body (1) Air Cleaner Body - Removal.





11. Remove the resonator (1) Removal.





12. Disconnect the heater core return hose (1).





13. Disconnect the left upstream oxygen sensor connector (1) from the main wire harness.
14. Disengage two upper wire harness retainers (2) from the intake manifold support brackets.
15. Disengage two lower wire harness retainers (3) from the intake manifold support brackets.





16. Remove the nut (2), bolt (3) and the heater core return tube (1).





17. Remove the bolt (2) and the oil level indicator tube (1).





18. Remove the upper and lower intake manifolds (2) and insulator Intake Manifold - Removal.





19. Remove the bolts (2) and remove the LH upper intake manifold support brackets (1).





20. Remove the accessory drive belt (7) Serpentine Accessory Drive Belt - Removal.





21. Remove the generator (2) Generator - Removal.





22. Remove the A/C compressor (1) from the engine compartment A/C Compressor - Removal.





23. Disconnect the ignition coil capacitor electrical connector.
24. Disconnect the Engine Coolant Temperature (ECT) sensor connector.
25. Disconnect the main harness from the engine injection/ignition harness (1) at the rear of the left cylinder head.
26. Disconnect the main harness from the engine oil pressure/temperature harness (2) at the rear of the left cylinder head.
27. Remove the spark plugs . Spark Plug - Removal
28. Remove the cylinder head covers, lower and upper oil pans, crankshaft vibration damper and engine timing cover Engine Timing Cover(s) - Removal






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

29. 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.

30. 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.

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






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

32. Install the LH Camshaft Phaser Lock (4).
33. Loosen both the intake oil control valve (6) and exhaust oil control valve (2).
34. Remove the LH Camshaft Phaser Lock (4).
35. Remove the oil control valve (2) from the left side exhaust cam phaser and pull the phaser off of the camshaft.
36. Remove the oil control valve (6) from the left side intake cam phaser and pull the phaser off of the camshaft.





37. Remove the LH cam chain tensioner arm (1).
38. Remove two T30 bolts (6) and the LH cam chain tensioner (5).
39. Remove two T30 bolts (4) and the LH cam chain guide (2).





40. 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.

41. 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.

42. If required, remove the hydraulic lifters Hydraulic Lifter - Removal
43. 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.

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.

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





45. If required, remove the Engine Coolant Temperature (ECT) sensor (4).
46. If required, remove the bolt (2) and the ignition coil capacitor (1).
47. If required, remove the bolt (3) and the engine wire harness retainer bracket (5).