Valve Seat Inspection

Valve and Seat Refacing Measurements

NOTE: Refer to the appropriate Section 303-01 for the specification.

NOTE: After grinding valves or valve seats, check valve clearance.

1. Check the valve head and seat.
   • Check valve angles.
   • Check margin width.
   • Be sure margin width is within specification.

2. Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.