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 TM 55-1905-221-14-2
5-15.
CYLINDER HEAD (Continued).
LOCATION/ITEM
ACTION
REMARKS
DISASSEMBLY (Cont)
Valve seat inserts are pressed into the head. Inserts must be removed
as described below to avoid damage to the head.
c.
Place cylinder head on its
side as shown.
d.
Place the collet of tool
J6567 inside the valve
insert (8) so that the
bottom of the collet is
flush with bottom of the
insert.
e.
Hold the collet handle and
turn the T handle to expand
the collet cone until the
insert (8) is held securely
by the tool.
f.
Insert the drive bar of
the tool through the valve
insert (8).
g.
Tap the drive bar once or
twice to move the insert
about 1/16 inch away from
its seat in the cylinder
head.
h.
Turn the T handle to loosen
the collet cone and move
the tool into the insert
(8) slightly so that the
narrow flange at the bottom
of the collet is below the
valve seat insert (8).
5-346
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