Cylinder Head Replacement - Left

Cylinder Head Replacement - Left Side

Special Tools

J 45059 Angle Meter

Removal Procedure




1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill With HP5) (Service and Repair)Cooling System Draining and Filling (Static Fill Without HP5) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill With HP5) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill Without HP5) (Service and Repair).
2. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement (Service and Repair).
3. Lower the vehicle.
4. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement (Service and Repair).
5. Remove the valve rocker arms and the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement (Service and Repair).
6. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side (LZ4) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (LY7 or LCS) (Exhaust Manifold Replacement - Left Side).
7. Remove the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement (Service and Repair).
8. Disconnect the left spark plug wires from the spark plugs.
9. Remove the spark plug wire clips from the brackets.
10. Disconnect and remove the left spark plug wires from the ignition coil.




11. Remove the left spark plugs. Refer to Spark Plug Replacement (Service and Repair).
12. Remove and discard the cylinder head bolts.
13. Remove the cylinder head.




14. Remove and discard the cylinder head gasket.
15. Remove the cylinder head locator dowel pins, if necessary.

Installation Procedure





Caution: Head gaskets are specific for right hand and left hand applications, and also must be installed with the correct side facing up. Note the markings (1) on the head gaskets for proper installation. Failure to do so may lead to engine damage.

1. Install the cylinder head locator dowel pins, if necessary.
2. Inspect the cylinder head locator dowel pins for proper installation.




3. Install a NEW cylinder head gasket.




4. Install the cylinder head onto the locator pins and the engine.
Caution: This component uses torque-to-yield bolts. When servicing this component do not reuse the bolts, New torque-to-yield bolts must be installed. Reusing used torque-to-yield bolts will not provide proper bolt torque and clamp load. Failure to install NEW torque-to-yield bolts may lead to engine damage.

5. Install NEW cylinder head bolts finger tight.

Left - Right:

Caution: Refer to Fastener Caution (Fastener Caution).

6. Tighten the cylinder head bolts in sequence to 60 Nm (44 lb ft) plus an additional 95 degrees using the J 45059 .
7. Install the left spark plugs. Refer to Spark Plug Replacement (Service and Repair).




8. Install and connect the left spark plug wires to the ignition coil.
9. Install the spark plug wire clips to the brackets.
10. Connect the left spark plug wires to the spark plugs.
11. Install the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement (Service and Repair).
12. Install the exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side (LZ4) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (LY7 or LCS) (Exhaust Manifold Replacement - Left Side).
13. Install the valve rocker arms and the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement (Service and Repair).
14. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement (Service and Repair).
15. Fill the engine with oil. Refer to Engine Oil and Oil Filter Replacement (Service and Repair).
16. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill With HP5) (Service and Repair)Cooling System Draining and Filling (Static Fill Without HP5) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill With HP5) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill Without HP5) (Service and Repair).
17. Inspect for leaks.