F 350 2WD Super Duty V10-6.8L VIN S (1999)
Valve: Testing and Inspection
Inspection
1. Inspect the following valve areas:
1. the end of the stem for grooves or scoring
2. the valve face and the edge for pits, grooves or scores
3. the valve head for signs of burning, erosion, warpage and cracking.
4. the valve head thickness for wear
Seat Runout
1. Use the Valve Seat Runout Gauge to check valve seat runout.
Seat Width
1. Measure the valve seat width. If necessary, grind the valve seat to specification.
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Measure the intake valve seat width.
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Measure the exhaust valve seat width.
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Recheck the valve spring installed length after the seats have been ground, and shim the valve springs as necessary to achieve the correct
installed spring length.
Stem Diameter