Cylinder Head Replacement - Left

Cylinder Head Replacement - Left Side

Special Tools

J 45059 Angle Meter

Removal Procedure

1. Drain the engine coolant from the cooling system. Refer to Cooling System Draining and Filling (LY7 GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ Static Fill) (Service and Repair)Cooling System Draining and Filling (LY7 Static Fill) (Service and Repair).
2. Remove the engine left side spark plug wires from the spark plugs. Refer to Spark Plug Wire Replacement (Service and Repair).




3. Remove the spark plug wire retainer support bolt (2) and support (1).
4. Remove the engine left side spark plugs. Refer to Spark Plug Replacement (Service and Repair).
5. Remove the left valve rocker arm cover. Refer to Valve Rocker Arm Cover Removal - Left Side (Overhaul).
6. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement (Service and Repair).
7. Remove the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement (Service and Repair).
8. Remove the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement (LNJ) (Service and Repair).
9. Remove the engine left side exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side (LY7) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (LNJ) (Exhaust Manifold Replacement - Left Side).




10. Remove the cylinder head bolts and discard.
11. Remove the cylinder head.




12. Remove the cylinder head gasket.

Note: All gasket mating surfaces must remain free of oil and foreign material. Refer to Adhesives, Fluids, Lubricants, and Sealers (Specifications) for the correct part number to use to clean surfaces.

13. Clean the following areas:

* The gasket sealing surfaces on the cylinder head, cylinder block, intake manifold, and exhaust manifold
* The cylinder block bolt threads

Installation Procedure




1. Install the cylinder head gasket.




2. Install the cylinder head.

Left - Right:

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.

Caution: Refer to Fastener Caution (Fastener Caution).

3. Install the NEW cylinder head bolts.
Tighten the bolts in sequence to 60 Nm (44 lb ft). Turn the bolts an additional 95 degrees using the J 45059 .
4. Install the engine left side exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side (LY7) (Exhaust Manifold Replacement - Left Side)Exhaust Manifold Replacement - Left Side (LNJ) (Exhaust Manifold Replacement - Left Side).
5. Install the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement (LNJ) (Service and Repair).
6. Install the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement (Service and Repair).
7. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement (Service and Repair).
8. Install the left valve rocker arm cover. Refer to Valve Rocker Arm Cover Removal - Left Side (Overhaul).
9. Install the engine left side spark plugs. Refer to Spark Plug Replacement (Service and Repair).




10. Install the spark plug wire retainer support (1) and bolt (2) and tighten the bolt to 25 Nm (18 lb ft).
11. Install the engine left side spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement (Service and Repair).
12. Fill the cooling system with engine coolant. Refer to Cooling System Draining and Filling (LY7 GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ GE 47716 Fill) (Service and Repair)Cooling System Draining and Filling (LNJ Static Fill) (Service and Repair)Cooling System Draining and Filling (LY7 Static Fill) (Service and Repair).