Tools Required

Caution: Refer to Safety Glasses Caution in the Preface section.





Important: 

•	When cleaning a cylinder head in a thermal type oven, do not exceed 204°C (400°F).

•	Be careful not to scuff the chamber.

1. Clean the following components:

•	Use the J 8089 in order to remove the carbon from the combustion chambers.

•	Gasket surfaces

•	Refer to Replacing Engine Gaskets.

•	Valve stems and heads on a buffing wheel

•	Bolt hole threads

•	Remove all dirt, debris, or threadlocking material from the bolt holes.

2. Inspect the cylinder head for the following conditions:

2.1.	Cracks in the exhaust ports and combustion chambers

2.2.	External cracks in the water chambers

2.3.	Gasket surfaces for excessive scratches or gouging

Refer to Replacing Engine Gaskets.

2.4.	Bolt hole threads for debris or damaged threads

Refer to Thread Repair or Thread Repair Specifications.




3. Inspect the cylinder head for warpage. Refer to Engine Mechanical Specifications.



4. Use the J 9666 in order to measure the valve spring tension. Refer to Engine Mechanical Specifications.