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 TM 9-2320-360-34-2
19-7. CYLINDER HEAD REPAIR (CONT)
NOTE
Head of valve must not protrude
more than 0.006 in.
(0.152 mm)
above cylinder head or be recessed
more than 0.023 in. (0.584 mm). If
beyond limit, valve seat insert must
be replaced.
(24) Measure valve recess (15) when valve (12) is
seated against valve seat insert (8).
(25) Install gage block and dial indicator (16) in valve
bore (9).
NOTE
Runout must be measured to ensure
valve is directly centered in valve
guide. If measurement exceeds 0.002
in. (0.05 mm), check for bent valve
guide before regrinding valve seat
insert.
(26)
Rotate dial indicator (16) and observe runout
NOTE
Tag valves to aid in installation.
(27) Recheck contact surface (13) between valve
face (11) and valve seat insert (8) with Prussian
blue dye. Do steps (13) thru (19).
(28) Clean cylinder
head
(1)
and
valves
(12)
thoroughly.
19-50
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