TM 9-2815-210-34-2-2
FRAME 20
NOTE
Intake valve seat counterbores (1) are bigger than
exhaust valve seat counterbores (2).
1.
In machine shop, measure depth of three intake valve seat counterbores (1).
Depth must be 0.4155 to 0.4205 inch.
2.
In machine shop, if depth of any intake valve seat counterbore (1) is not
0.4155 to 0.4205 inch, machine to correct depth.
3.
In machine shop, measure depth of three exhaust valve seat counterbores (2).
Depth must be 0.3825 to 0.3875 inch.
4.
In machine shop, if depth of any exhaust valve seat counterbore (2) is not
0.3825 to 0.3875 inch, machine to correct depth.
5.
Send cylinder head (3) back to mechanic.
GO TO FRAME 21
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