Wash the tip in fuel oil and dry it with
compressed air. Clean the spray tip ori-
fice with pin vise J 4298-1 and the prop-
er size tip cleaning wire. Use wire J
Figure 11C-26. Removing Spray Tip
2 1 4 6 0 to clean 0.0055" diameter holes and
from Injector
wire J 21461 to clean 0.006" diameter
holes
(see
on
ner. This cleans the spray tip orifice
a r e a and will not plug the orifices.
Before using the wire, hone the end un-
Wash the spray tip in clean fuel oil and
til it is smooth and free of burrs and ta-
dry it with compressed air.
per the end a distance of 1/16" with
stone J 8170. Allow the wire to extend
Clean and brush all of the passages in
1 / 8 " from tool J 4298-1.
the injector body, using fuel hole clean-
ing brush J 8152 and rack hole cleaning
The exterior surface of an injector spray
brush J 8150. Blow out the passages
tip may be cleaned by using a brass wire
and dry them with compressed air.
buffing wheel, tool J 7944. To obtain a
good polishing effect and longer brush
Carefully insert reamer J 21089 in the in-
life, the buffing wheel should be in-
stalled on a motor that turns the wheel at
11C-18). Turn it in a clockwise direc-
approximately 3000 RPM. A convenient
tion a few turns, then remove the reamer
method of holding the spray tip while
and check the face of the ring for reamer
cleaning and polishing is to place the tip
contact over the entire face of the ring.
over the drill end of the spray tip clean-
If necessary, repeat the reaming proce-
er tool J 1243 and hold the body of the
dure until the reamer does make contact
In this
tip against the buffing wheel.
with the entire face of the ring. Clean
way, the spray tip is rotated while being
up the opposite side of the ring in the
buffed.
s a m e manner.
Carefully insert a 0.375" diameter
straight fluted reamer inside the ring
bore in the injector body. Turn the
Do not buff excessively. Do not
reamer in a clockwise direction and re-
use a steel wire buffing wheel or
move any burrs inside the ring bore.
the spray tip holes may be dis-
Then wash the injector body in clean fuel
torted.
oil and dry it with compressed air.
Remove the carbon deposits from the
When the body of the spray tip is clean,
lower inside diameter taper of the injec-
lightly buff the tip end in the same man-
tor nut with carbon remover J 9418-5
