45. Cylinder Head Clean and Inspect

Cylinder Head Cleaning and Inspection

^ Tools Required
- J 8089 Carbon Removal Brush
- J 9666 Valve Spring Tester





1. Caution: Refer to Safety Glasses Caution in Service Precautions.

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 these components:
^ Use the J 8089 in order to remove the carbon from the combustion chambers.
^ Gasket surfaces
^ 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 these 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
4 Bolt hole threads for debris or damaged threads





3. Inspect the cylinder head for warpage.





4. Inspect the valve springs for squareness.





5. Use the J 9666 in order to measure the valve spring tension.