Valve Inspection

The critical inspection points and tolerances of the valve are illustrated.

Inspect the valve stem for bends and the end of the stem for grooves or scoring.
Inspect the valve face and the edge of the valve head for pits, grooves or scores. Inspect the stem for a bend condition and the end of -the stem for grooves or scores. Check the valve head for signs of burning or erosion, warpage and cracking. Minor pits, grooves and other abrasions may be removed. Discard severely damaged valves.
Inspect the valve spring, valve spring retainers, valve spring retainer keys and sleeves. Discard any damaged parts.