TM 5-3805-255-14
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VALVE RECONDITIONING CONTINUED
Valve Face Grinding
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1. Set valve refacing machine to grind correct valve face angle. Dress grinding stone (Figure 8, Item 2).
2. Valve face angle degrees:
a. Intake valves are 30 degrees -0' to 29 degrees -45'.
b. Exhaust valves are 45 degrees -0' to 45 degrees -15'.
3. Insert a valve (Figure 8, Item 1) in chuck. Center and take light cut across face. This determines if valve can be
reconditioned to service standards with correct amount of margin maintained. Warpage not apparent in visual
inspection will be clearly definable.
Figure 8. Locating Valve and Grinding Stone to Specified Angle.
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