73. Cylinder Head Installation - Left

Cylinder Head Installation - Left

Tools Required
- J36660-A Torque Angle Meter

1. Clean the cylinder head gasket surfaces on the engine block.





2. Inspect the cylinder head locator dowel pins for proper installation.
3. Clean the cylinder head gasket surfaces on the cylinder head.

Important: Do not use any type sealer on the cylinder head gasket, unless specified.





4. Install the NEW cylinder head gasket in position over the cylinder head locator dowel pins.





5. Install the cylinder head onto the engine block.
Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket.
6. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent, to the threads of the cylinder head bolts.





7. Install the cylinder head bolts finger tight.

Notice: Refer to Fastener Notice in Service Precautions.





8. Tighten the cylinder head bolts in sequence on the first pass.
Tighten the bolts in sequence on the first pass to 30 Nm (22 ft. lbs.).
9. Use the J36660-A in order to tighten the cylinder head bolts in sequence on the final pass.
- Tighten the long bolts (1, 4, 5, 8, and 9) on the final pass in sequence to 75 degrees.
- Tighten the medium bolts (12 and 13) on the final pass in sequence to 65 degrees.
- Tighten the short bolts (2, 3, 6, 7, 10, and 11) on the final pass in sequence to 55 degrees.





10. Install the spark plug wire support and bolts.
Tighten the spark plug wire support bolts to 12 Nm (106 inch lbs.).





11. Measure the NEW spark plugs for the proper gap.
Adjust the spark plug gap if necessary.
Specification
Spark plug gap to 1.52 mm (0.060 inch).
12. Install the spark plugs.
- Tighten the spark plugs for a USED cylinder head to 15 Nm (11 ft. lbs.).
- Tighten the spark plugs for the initial installation of a NEW cylinder head to 30 Nm (22 ft. lbs.).

13. If reusing the engine coolant temperature gage sensor, if applicable, apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent, to the threads of the engine coolant temperature gage sensor.





14. Install the engine coolant temperature gage sensor, if applicable.
Tighten the engine coolant temperature gage sensor to 20 Nm (15 ft. lbs.).
15. If reusing the engine coolant temperature sensor, if applicable, apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent, to the threads of the engine coolant temperature gage sensor.





16. Install the engine coolant temperature sensor, if applicable.
Tighten the engine coolant temperature sensor to 20 Nm (15 ft. lbs.).