Cylinder Head: Installation: Left

Fig 1: Magnetic Timing Wheels

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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.

Fig 2: Ignition Coil Capacitor, Bolt & Engine Coolant Temperature (ECT) Sensor

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If removed, install the Engine Coolant Temperature (ECT) sensor (4) and tighten to 11 N.m (97 in. lbs.).
If removed, install the ignition coil capacitor (1) with a M6 bolt (2) tightened to 10 N.m (89 in. lbs.).

Fig 3: Identifying Cylinder Head Bolts
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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 in illustration.
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.

Fig 4: Head Gasket & Locating Dowels
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NOTE:
Right head gasket shown in illustration, 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.
Clean and prepare the gasket sealing surfaces of the cylinder head and block. Refer to 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.
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 installation of the cylinder head gaskets are not interchangeable between the left and right cylinder heads. They are clearly marked (3) with "R" for right and "L" for left. They must be applied on a dry surface, without the use of any adhesives.
Position the new cylinder head gasket (1) on the locating dowels (2).

Fig 5: Cylinder Head Retaining Bolt Tightening Sequence - Left
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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.
Install the eight head bolts finger tight.
Tighten the cylinder head bolts in the sequence shown in illustration, following this 9 step torque plus angle method. Tighten according to the following torque values:
- Step 1: All to 30 N.m (22 ft. lbs.)
- Step 2: All to 45 N.m (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 in illustration
- Step 6: All to 30 N.m (22 ft. lbs.)
- Step 7: All to 45 N.m (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.
Fig 6: Positioning Camshaft Alignment Holes Vertically
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NOTE:
If the hydraulic lifters are being reused, reassemble them into their original locations.
If removed, install the hydraulic lifters. Refer to LIFTER(S), HYDRAULIC, INSTALLATION .
NOTE:
If the rocker arms are being reused, reassemble them into their original locations.

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.
Install the rocker arms and camshafts. Refer to CAMSHAFT, ENGINE, INSTALLATION .
Rotate the camshafts CW to TDC by positioning the alignment holes (1) vertically.

Fig 7: Left Cam Chain Tensioner, Arm, Guide & Bolts
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Install the LH cam chain guide (2) with two bolts (4). Tighten the T30 bolts (4) to 12 N.m (106 in. lbs.).
Install the LH cam chain tensioner (5) to the cylinder head with two bolts (6). Tighten the T30 bolts (6) to 12 N.m (106 in. lbs.).
Reset the LH cam chain tensioner (5) by lifting the pawl (3), pushing back the piston and installing Tensioner Pin (special tool #8514, Pins, Tensioner) (7).
Refer to STANDARD PROCEDURE .
Install the LH tensioner arm (1).

Fig 8: Idler Sprocket, Plated Link & Arrow
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Press the LH 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.
Drape the left side cam chain over the LH 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.

Fig 9: Phaser Timing Marks, Oil Control Valves & LH Camshaft Phaser Lock
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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.
Install the LH Camshaft Phaser Lock (special tool #10202, Locks, Camshaft/Phaser) (4) and tighten the oil control valves (2) and (6) to 150 N.m (110 ft. lbs.).

Fig 10: Rotating Crankshaft Clockwise To Position No. 1 Piston At TDC On Exhaust Stroke
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Remove the LH Camshaft Phaser Lock (special tool #10202, Locks, Camshaft/Phaser).
Remove the Tensioner Pin (special tool #8514, Pins, Tensioner) (1) from the LH cam chain tensioner.
Rotate the crankshaft CW two complete revolutions stopping when the dimple (4) on the crankshaft is aligned the with the block/bearing cap junction (5).
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).

Fig 11: Chain Pins, Exhaust Cam Phaser Triangle Marking & Circle Marking
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There should be 12 chain pins (2) between the exhaust cam phaser triangle marking (1) and the intake cam phaser circle marking (3).
If the engine timing is not correct, repeat this procedure.
Install the engine timing cover, crankshaft vibration damper, upper and lower oil pans. Refer to COVER(S), ENGINE TIMING, INSTALLATION .

Fig 12: Ignition Coil Capacitor Electrical Connector
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Connect the ignition coil capacitor electrical connector (1).

Fig 13: A/C Compressor & Mounting Bolts
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Install the A/C compressor (2) onto the engine with four bolts (1) tightened to 28 N.m (21 ft. lbs.).

Fig 14: Drive Belt Tensioners & Assembly With Drive Belt
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Install the accessory drive belt (7). Refer to BELT, SERPENTINE, INSTALLATION .
Install the right and left cylinder head covers. Refer to COVER(S), CYLINDER HEAD, INSTALLATION .

Fig 15: Upstream & Downstream Oxygen Sensors & Bolts
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NOTE:
Right catalytic converter shown in illustration, left catalytic converter similar.
Install the left catalytic converter. Refer to CONVERTER, CATALYTIC, INSTALLATION .
Connect the upstream (3) and downstream (1) oxygen sensor connectors to the main wire harness.

Fig 16: Upper Intake Manifold Tightening Sequence
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Install the upper and lower intake manifolds. Refer to MANIFOLD, INTAKE, INSTALLATION .
Install the front wheelhouse inner splash shields. Refer to SHIELD, SPLASH, WHEELHOUSE, INSTALLATION .

Fig 17: Air Cleaner Body, Fresh Air Makeup Hose, Electrical Connector, Clamp, Bolts & Retainers
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Install the air inlet hose (3) and the air cleaner body. Refer to BODY, AIR CLEANER, INSTALLATION .

Fig 18: Engine Cover
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If removed, install the oil filter and fill the engine crankcase with the proper oil to the correct level. Refer to STANDARD PROCEDURE .
Fill the cooling system. Refer to STANDARD PROCEDURE .
Install the engine cover (1).
Connect the negative battery cable and tighten nut to 5 N.m (45 in. lbs.).
Run the engine until it reaches normal operating temperature. Check cooling system for correct fluid level. Refer to STANDARD PROCEDURE .

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.