– Check valve for out-of-round, bent or warped condition using a valve inspection center and dial indicator. Replace valve if necessary.
If valve faces are worn, burned or pitted, grind valves to proper face angle. If valve face
margin (A) is less than specification after grinding, replace valve.
Measure valve stem diameter at the two locations shown. Replace valve if measurement exceeds wear limit.
Measure valve recession (C) using a depth gauge. Replace valve or cylinder head if measurement exceeds wear limit.