Cleaning and Inspection

CLEANING

CAUTION: With the valves installed to protect the valve seats, remove deposits from the combustion chambers and valve heads with a scraper and a wire brush. Do not damage the head gasket surface or leakage may occur upon reassembly. After the valves are removed, clean the valve guide bores. Use cleaning solvent to remove dirt, grease and other deposits. Clean all bolt holes. Remove all deposits from the valve with a fine wire brush or buffing wheel.

INSPECTION
Inspect the cylinder heads for cracks or excessively burned areas in the exhaust outlet ports.

Check the cylinder head for cracks and inspect the head gasket surface for burrs and nicks. Small imperfections can be dressed down using an oil stone. Replace the cylinder head if it is cracked.

The following inspection procedures are for a complete cylinder head overhaul. For individual service operations, use only the appropriate inspection procedure.