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TM 10-3930-643-34
ENGINE, FUEL, EXHAUST AND COOLING TROUBLESHOOTING AND
4-4.
Cylinder Head Assembly with Valves. (Sheet 8 of
DISASSEMBLY/CLEANING/INSPECTION (cont)
21.
22.
23.
24.
25.
26.
Place six new sleeves (15) in
cylinder
bores
and
position
installing tool.
Keep tool centered
and tap squarely with brass
hammer
until six sleeves (15) are
bottomed
in bores.
Inspect 12 coolant directors
(16).
Replace if loose or restricted. If
required, coolant directors (16) may
be removed using a slide hammer with
a small enough jaw to
hook under
coolant directors (16) opening.
Install new coolant directors
(16),
as shown, if removed, by tapping into
place with a small hammer and block.
Recess 0.06 inches below bottom deck
of cylinder head (6).
Aim 12 new coolant directors (16), as
shown.
Inspect six exhaust valves-small head
(13) and intake valves-large head
(14) for excessive wear, burn marks,
warpage, pitting or scuffing at valve
stem grooves, valve stems and heads.
Replace if bent, worn, burned,
warped, pitted or scuffed.
Measure valve stem diameter in two
places, as shown.
Valve stem should
be 0.3718 inches.
If stem is
undersize,
NOTE
more than 0.001 inches
replace valve.
MAINTENANCE. (cont)
18)
Go to sheet 9
4-36
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