45. Cylinder Head Cleaning and Inspection

Cylinder Head Cleaning and Inspection

Tools Required
^ J8089 Carbon Removal Brush
^ J9666 Valve Spring Tester





1. Caution: Refer to Safety Glasses Caution.

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.

Clean the following components:
^ Use the J8089 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:
1. Cracks in the exhaust ports and combustion chambers
2. External cracks in the water chambers
3. Gasket surfaces for excessive scratches or gouging Refer to Replacing Engine Gaskets.
4. Bolt hole threads for debris or damaged threads Refer to Thread Repair or Thread
Repair Specifications.





3. Inspect the cylinder head for warpage.





4. Use the J9666 in order to measure the valve spring tension. Refer to Engine Mechanical Specifications.