TM 5-3895-370-14&P5-64. CYLINDER HEAD ASSEMBLY REPAIR (CONT).(11)Measure seat angle of intake valve (position I).Normal measurement is 30.Measure seat angle of exhaust valve (positionE). Normal measurement is 45.(12)If measurements are greater than normal, grindvalve seat to correct angle. If measurementsare less than normal, replace with service valveseat.(13)Measure valve stem at positions D, F, and G.Normal measurement is between 0.3126 to0.3142 in. (7.94 7.9807 mm). If above or belownormal measurement, replace valve.(14)Measure valve rim at position H. Ifmeasurement is less than 0.031 in. (0.787 mm),replace valve.5-264
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