REPAIR INSTRUCTIONS, PART 1
Page 253
Inlet and Exhaust Valve Inspection
Visually inspect valves for cracks, pits or other
conditions that may cause improper operation.
Check valve seat angle. Also check stem length,
diameter and condition.
277
Figure 277 — Valve Dimensions
1. Inlet Valve
2. Pyromet Exhaust Valve
3. Seat Angle: 20° Inlet, 30° Exhaust
4. Minimum After Grinding: 0.130 inch (inlet), 0.0100 inch
(Exhaust)
5. One Stem Groove
6. Two Stem Grooves
5-111.bk Page 253 Monday, July 10, 2006 2:26 PM