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. If removed, install the Engine Coolant Temperature (ECT) sensor (4) and tighten to 11 Nm (97 in. lbs.).
2. If removed, install the ignition coil capacitor (1) with a M6 bolt (2) and tightened to 10 Nm (89 in. lbs.).
3. If removed, install the engine wire harness retainer bracket (5) with a T30 bolt (3) and tightened to 12 Nm (106 in. lbs.).






CAUTION: The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced.

NOTE: Typical cylinder head bolt shown.

4. Check cylinder head bolts for necking by holding a scale or straight edge against the threads. If all the threads do not contact the scale (2) the bolt must be replaced.






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

CAUTION: When cleaning cylinder head and cylinder block surfaces, DO NOT use a metal scraper because the surfaces could be cut or ground. Use ONLY a wooden or plastic scraper.

5. Clean and prepare the gasket sealing surfaces of the cylinder head and block Engine Gasket Surface Preparation.

CAUTION: Non-compressible debris such as oil, coolant or RTV sealants that are not removed from bolt holes can cause the aluminum casting to crack when tightening the bolts.

6. Clean out the cylinder head bolt holes in the engine block.

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

CAUTION: The cylinder head gaskets are not interchangeable between the left and right cylinder heads and are clearly marked (3) with "R" for right and "L" for left.

7. Position the new cylinder head gasket (1) onto the locating dowels (2).





8. Position the cylinder head onto the cylinder block. Make sure the cylinder head seats fully over the locating dowels.

NOTE: Do not apply any additional oil to the bolt threads.

9. Install the eight cylinder head bolts finger tight.
10. Tighten the cylinder head bolts in the sequence shown, following this 9 step torque plus angle method. Tighten according to the following torque values:
- Step 1: All to 30 Nm (22 ft. lbs.)
- Step 2: All to 45 Nm (33 ft. lbs.)
- Step 3: All + 75° Turn Do not use a torque wrench for this step.
- Step 4: All + 50° Turn Do not use a torque wrench for this step.
- Step 5: Loosen all fasteners in reverse of sequence shown
- Step 6: All to 30 Nm (22 ft. lbs.)
- Step 7: All to 45 Nm (33 ft. lbs.)
- Step 8: All + 70° Turn Do not use a torque wrench for this step.
- Step 9: All + 70° Turn Do not use a torque wrench for this step.





CAUTION: Do not rotate the camshafts more than a few degrees independently of the crankshaft. Valve to piston contact could occur resulting in possible valve damage. If the camshafts need to be rotated more than a few degrees, first move the pistons away from the cylinder heads by rotating the crankshaft counterclockwise to a position 30° before-top-dead-center. Once the camshafts are returned to their top-dead-center position, rotate the crankshaft clockwise to return the crankshaft to top-dead-center.

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

11. If removed, install the hydraulic lifters . Hydraulic Lifter - Removal

NOTE: If the rocker arms are being reused, reassemble them into their original locations.

12. Install the rocker arms and camshafts Camshaft - Installation.
13. Rotate the camshafts clockwise to TDC by positioning the alignment holes (1) vertically.





14. Install the left cam chain guide (2) with two bolts (4) and tighten the T30 bolts (4) to 12 Nm (9 ft. lbs.).
15. Install the left cam chain tensioner (5) to the cylinder head with two bolts (6) and tighten the T30 bolts (6) to 12 Nm (9 ft. lbs.).
16. Reset the left cam chain tensioner (5) by lifting the pawl (3), pushing back the piston and installing Tensioner Pin (7) . Service and Repair
17. Install the left tensioner arm (1).





18. Press the left intake cam phaser onto the intake camshaft, install and hand tighten the oil control valve.

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.

19. Drape the left side cam chain over the left intake cam phaser and onto the idler sprocket (1) so that the arrow (3) is aligned with the plated link (2) on the cam chain.





20. While maintaining this alignment, route the cam chain around the exhaust and intake cam phasers so that the plated links are aligned with the phaser timing marks (1). Position the left side cam phasers so that the arrows (3) point toward each other and are parallel to the valve cover sealing surface (5). Press the exhaust cam phaser onto the exhaust cam, install and hand tighten the oil control valve (2).

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

21. Install the LH Camshaft Phaser Lock (4) and tighten the oil control valves (2) and (6) to 150 Nm (110 ft. lbs.).





22. Remove the LH Camshaft Phaser Lock.
23. Remove the Tensioner Pin (1) from the left cam chain tensioner.
24. Rotate the crankshaft clockwise two complete revolutions stopping when the dimple (4) on the crankshaft is aligned the with the block/bearing cap junction (5).
25. While maintaining this alignment, verify that the arrows on the left side cam phasers (2) point toward each other and are parallel to the valve cover sealing surface (3) and that the right side cam phaser arrows (7) point away from each other and the scribe lines (9) are parallel to the valve cover sealing surface (8).





26. There should be 12 chain pins (2) between the exhaust cam phaser triangle marking (1) and the intake cam phaser circle marking (3).
27. If the engine timing is not correct, repeat this procedure.
28. Install the engine timing cover, crankshaft vibration damper, upper and lower oil pans and cylinder head covers Engine Timing Cover(s) - Installation.





29. Install the left upper intake manifold support brackets (1) and tighten the stud (2) finger tight.





30. Fasten two starter wire harness retainers (1) to the upper intake manifold support brackets.
31. Fasten one main wire harness retainer (3) to the left cylinder head cover and two retainers (2) to the upper intake manifold support brackets.





32. Install the spark plugs and tighten to 18 Nm (13 ft. lbs.) . Spark Plug - Installation
33. Install the ignition coils (2) . Ignition Coil - Installation





34. Connect the ignition coil capacitor electrical connector.
35. Connect the injection/ignition electrical connector (1).
36. Connect the engine oil pressure/temperature sensor electrical connector (3).
37. Fasten the injection/ignition wire harness and the oil pressure/temperature sensor wire harness from the retainer bracket (2) on the rear of the left cylinder head.





38. Connect the Engine Coolant Temperature (ECT) sensor electrical connector (3).





39. Install the upper and lower intake manifolds Intake Manifold - Installation.





40. Position the heater core return tube (1) onto the upper support bracket, install the retaining nut (2) and tighten to 12 Nm (9 ft. lbs.).





41. Connect the heater core return hose (1).





42. Position the A/C compressor (2), install the upper bolts (1) finger tight.
43. Install the lower A/C compressor retaining studs (3) finger tight
44. Tightened the A/C compressor upper bolts (1) to 25 Nm (18 ft. lbs.).
45. Raise and support the vehicle Maintenance.





46. Position the heater core return tube lower support bracket onto the A/C compressor lower retaining stud, install the nut (1) and tighten both A/C compressor lower retaining nuts to 25 Nm (18 ft. lbs.).





47. Connect the A/C compressor electrical connector (1) and fasten the wire harness retainer (2) to the A/C compressor discharge line.





48. Connect the lower heater core return hose (1) to the engine coolant pump housing.





49. Position the left down pipe onto the partially installed lower flange bolts (2).
50. Install the upper down pipe flange bolts (1) and tighten to 23 Nm (17 ft. lbs.).
51. Tighten the lower down pipe flange bolts (2) to 23 Nm (17 ft. lbs.).
52. Connect the left upstream oxygen sensor electrical connector (4) to the main wire harness.





53. If removed, install the oil filter.
54. Position the belly pan and install the retainers (1).
55. Lower the vehicle.





56. Rotate the accessory drive belt tensioner (7) counterclockwise until it contacts the stop and install the accessory drive belt (3), then slowly rotate the tensioner into position.





57. Connect the fresh air makeup hose (2) to the rear of the intake manifold (1).





58. Position the coolant bottle (3) into the engine compartment.
59. Install the coolant bottle retaining bolts (2) and tighten to 12 Nm (9 ft. lbs.).
60. Connect the heater core purge hose (1) to the coolant bottle.





61. Connect the coolant bottle return hose (1).





62. Position the air cleaner housing (3) into the vehicle.
63. Install the air cleaner housing retaining bolt (2) and tighten to 12 Nm (9 ft. lbs.).
64. Connect the fresh air makeup hose (1) to the air cleaner housing.





65. Position the air inlet hose assembly (5) onto the throttle body and the air cleaner housing.
66. Secure the air inlet hose assembly retaining grommet onto the ball stud (4).
67. Tighten the clamp at the air cleaner housing (3) to 5 Nm (44 in. lbs.).
68. Tighten the clamp (2) at the throttle body to 5 Nm (44 in. lbs.).
69. Connect the Inlet Air Temperature (IAT) sensor electrical connector (1).





70. Fill the crankcase with the specified type and amount of engine oil .
71. Fill the cooling system with the specified type and amount of engine coolant Service and Repair.
72. Position the engine cover (1) and secure the retaining grommets onto the ball studs.





73. Connect the negative battery cable and tighten nut to 5 Nm (45 in. lbs.).
74. Run the engine until it reaches normal operating temperature and check for leaks.

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.