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 TM 55-1905-223-24-5
(1)
Make sure the valve spring compressor stand is fastened to the work
bench.
(2)
Align the center of the cylinder head with the plunger (4) of the
compressor stand.
(3)
Position the compressor plate (3) on the cylinder head (2) so that the
valve stems will be in the center of the holes in the plate (3).
(4)
Pull down on the handle (1) of the stand. Make sure the valve stems stay
in the center of the holes.
(5)
Bring the handle (1) all the way down so that the locking pin will engage
the hole in the plunger (4). The locking pin holds the plunger (4)
against the plate (3) that compresses the springs.
(6)
Remove the valve spring collects (2, FIGURE 4-1).
(7)
Push down on the handle (1, FIGURE 4-2) and disengage the locking pin
from the plunger (4). Raise the plunger (4) from the cylinder head (2).
(8)
Remove the valve springs (1, FIGURE 4-1), valve springs guides (3, 15),
and valves (9) from the cylinder head.
(9)
Mark each valve as it is removed to identify its location in the cylinder
head.
d.
There is a 1/8 inch pipe plug in the cylinder head vent hole. Remove the
pipe plug (15).
e.
Remove the pipe plugs from the fuel holes in the number 1 and 3 cylinder
head.
f.
Remove the pipe plugs from the fuel passages in each end of the cylinder
head.
g.
Remove the expansion plugs (7, 5, and 6, FIGURE 4-1).
(1)
Use a hammer and punch to loosen the cup plug. Hold the punch against
the plug, near the outside diameter of the plug, and hit the punch with a
hammer to cause one side of the plug to move from its correct location.
(2)
Use pliers to pull the plug from the hole.
REPAIR. Table 4-3 lists specifications for the cylinder head, valve guides, valve seat inserts, crosshead
guides, and injector sleeves. See FIGURE 4-3 for reference numbers in Table 4-3 which is located at the end
of this procedure.
a.
Clean and inspect the cylinder head and capscrews.
(1)
Blow out all capscrew holes, fuel passages, and oil passages.
4-8
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