Valves

CLEANING
Clean the valve stems with crocus cloth or a Scotch-Brite(R) pad. Remove carbon with a soft wire brush. Clean valves, springs, retainers, and valve retaining locks in a suitable solvent. Rinse in hot water and blow dry with compressed air.

INSPECTION

Visually Inspect Valves For Abnormal Wear:

Visually inspect the valves for abnormal wear on the heads, stems, and tips. Replace any valve that is worn out or bent.

Measure Valve Stem Diameter:

Measure the valve stem diameter in three places as shown.

Measure Valve Guide Bore:

Measure the cylinder head valve guide bore. Subtract the corresponding valve stem diameter to obtain valve stem-to-guide clearance.

Measure Valve Margin(Rim Thickness):

Measure valve margin (rim thickness)

Measure Valve Spring Free Length And Max Inclination:

Measure the valve spring free length and maximum inclination.

Testing Valve Spring With Tool C-647:

Test valve spring force with tool C-647.