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Page Title:
FIGURE 157. FUEL INJECTOR NOZZLE AND HOLDER ASSEMBLY-SECTIONAL VIEW |
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 Caution: Do not scrape carbon from
(5) Clean the body (B), spindle (F), spring
valve or inner surface of body with any
(G), adjusting screw (H), lock nut (K),
sharp tool. abrasive material. or wire
and cap (A) with dry- cleaning solvent
brush. Highly polished surfaces may
or mineral spirits paint thinner. Re-
be severely damaged.
move sludge and gum deposits from fuel
passage in body (fig. 157) by probing
(3) Clean carbon from spray nozzle holes
with an 0.010-inch diameter cleaning
in nozzle body (C-2) by probing with a
wire.
0.010- inch diameter cleaning wire.
g. Inspection (fig. 156).
Note. Use extreme care while cleaning
to prevent breakage of cleaning wire in
holes as it is often impossible to re-
(1) Inspect seat of valve (C-1) and nozzle
move broken pieces.
body (C-2) for evidence of wear, dis-
tortion of the valve seat due to pounding,
(4) Clean the inside of the nozzle body (C-2)
discoloration due to overheating, and
with a formed piece of soft wood, well
for pitting. Inspect the highly polished
soaked in oil. The point of the wooden
shoulder for scratches and discolora-
probe should correspond to the angle of
tion. Check fit of valve in the nozzle
the valve seat. Clean the outer surface
body (C- 2). The valve should slide freely
of the body with a soil cloth soaked in
to its seat without aid. Inspect the body
carbon solvent. Do not scrape carbon
valve seat using a strong light and a
from the surface around the orifices.
magnifying glass for scratches, dis-
111
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