Cylinder Head Assembly: Service and Repair

Cylinder Head LH

Service Repair No - 12.29.04

CAUTION: If a replacement cylinder head is to be installed to a vehicle with variable camshaft timing (VCT) the cylinder head must have the oil gallery blind rivet removed before installation.

Removal
1. Disconnect the battery ground cable.
2. Remove the intake manifold.
3. Remove the LH bank camshafts.





4. Remove the camshaft position (CMP) sensor.
^ Remove the Torx screw.
^ Disconnect the electrical connector.





5. Disconnect the exhaust manifold EGR pipe flange.
^ Remove the 2 nuts.





6. CAUTION: The bolts can be used only twice, mark the bolts with a center punch.

NOTE: Remove the bolts in the indicated sequence.

Remove the 12 cylinder head bolts.
7. Remove the LH cylinder head assembly.
^ With assistance remove the cylinder head.





8. Remove and discard the cylinder head gasket.
^ Clean the cylinder head locating dowels.





9. NOTE: Do not disassemble further if the component is removed for access only.

Remove the exhaust manifold.
^ Remove the 8 bolts.
^ Discard the gasket and the bolts.

Installation
1. Clean the component mating faces.





2. Check cylinder head face for distortion, across the center and from corner to corner.





3. Install the exhaust manifold.
^ Clean the component mating faces.
^ Install the gasket/heat shield.
^ Tighten the heat shield bolt to 25 Nm (18 ft. lbs.).
^ Evenly and progressively, tighten the bolts in the sequence shown to 20 Nm (15 ft. lbs.).

4. CAUTION: The head gasket must be installed over the cylinder block dowels.

Install a new cylinder head gasket.
5. With assistance install the cylinder head.





6. NOTE: Tighten the bolts 1 to 10 in the sequence shown.

Install the cylinder head bolts.
^ Lubricate the new cylinder head bolt threads with clean engine oil.
^ Tighten the bolts to 20 Nm (15 ft. lbs.).
^ Tighten the bolts to 35 Nm (26 ft. lbs.).
^ Tighten the bolts 1 to 10, a further 90 degrees.
^ Tighten the bolts 1 to 10, a further 90 degrees.
^ Tighten the M8 bolts 11 and 12, to 25 Nm (18 ft. lbs.).
7. Connect the EGR pipe and exhaust manifold flanges.
^ Tighten the nuts to 25 Nm (18 ft. lbs.).
8. Install the CMP sensor.
^ Tighten the Torx screw to 7 Nm (5 ft. lbs.).
^ Connect the electrical connector.
9. Install the LH bank camshafts.
10. Install the intake manifold.
11. Connect the battery ground cable.