44. Cylinder Head Cleaning and Inspection

Cylinder Head Cleaning and Inspection

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

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.





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