TM 5-4310-379-14
Figure 5-19. Exhaust Valve, Replace.
NOTE
Inside diameter of new guide is .3445-.3455 in. (.8750-.8775 cm) which produce a valve stem-to-guide
clearance with valve of .002-.0038 in. (.005-.009 cm). Replace guide if clearance exceeds .006 in. (.001
cm).
(11)
Clean inside diameter of exhaust valve with valve guide cleaner.
(12)
Inspect valve guide (7) and replace if fractured, chipped, scored or worn.
NOTE
The proper angle for the seating face of the valve is 30 and the insert is 31.
(13)
Inspect valve seat insert (8) and replace if pitted, cracked, worn or an improper seat angle.
NOTE
Counterbores have a diameter of 1.626-1.627 in. (4.130-4.132 cm) and a depth of .372-.383 in. (.944-
.972 cm). Counterbores must be concentric with the valve guides within .003 in. (.007 cm) total indicator
reading.
5-61/(5-62 blank)
