TM 5-2420-230-24-2
Cylinder Head - Group 2
Valves - Grinding (2-11)
B Series Shop Manual
Page 2-15
Valves - Grinding (2-11)
Re-face all reused valves. Check/replace bent valves.
Seat Angle
Intake: 30 Degrees
Exhaust: 45 Degrees
Measure rim thickness.
Valve Rim Thickness
Minimum (T): 0.79 mm [0.031 in]
Check the valve stem tip for flatness.
L-278