TM 9--2815--247--34 0061 00--13 CYLINDER HEAD ASSEMBLY REPAIR -- CONTINUED 0061 00 Repair -- Continued NOTE Repair valve seat inserts which do not show 360° contact with valve face. 14. Grind exhaust valve seat (19), using valve seat grinding machine and 45° angle grinding stone. 15. Grind intake valve seat (20), using valve seat grinding machine and 15° angle grinding stone. NOTE After dressing seat of insert, recheck valve contact as described under Inspection steps 4 and 5. 16. When 360° contact is obtained, narrow seat on insert to width specified by grinding inner wall and exposed face of insert to angles specified. NOTE Keep valve seat area as near as possible to center of valve face. Valves should never seat at the top or bottom of the valve face area. Figure 9 SEE NOTE 1 INTAKE VALVE 0.0890 MIN 0.0990 MAX SEE NOTE 1 EXHAUST VALVE 0.0600 MIN 0.0700 MAX NOTE: ALL DIMENSIONS SHOWN ARE IN INCHES. NOTE 1 NEW REPAIR INTAKE VALVE 6.355 TO 6.369 6.3740 EXHAUST VALVE  7.010 TO 7.024 7.0340 0.1200 SEAT WIDTH (MAX) REGRIND ON THIS LINE WHEN WIDTH OF VALVE INSERT EXCEEDS 0.1200 20 19 REGRIND ON THIS LINE WHEN WIDTH OF VALVE INSERT EXCEEDS 0.1200 SEAT WIDTH (MAX) 0.1200 45 DEG⁺¹⁵ --00 45 DEG⁺¹⁵ --00 MIN SEAT ANGLE 30 MIN SEAT ANGLE INSERT SEAT WIDTH (NEW) 15 DEG+ 15° 15 DEG+ 15° 30 _