5-9. FUEL INJECTOR-MAINTENANCE INSTRUCTIONS (Continued)
OVERHAUL - CLEANING ( Cont)
Do not buff excessively. Do not use a steel wire buffing wheel or the spray tip
holes may be distorted.
g. The exterior surface of an injector
spray tip may be cleaned by using a
brass wire buffing wheel. To
obtain a good polishing effect and
longer brush life, the buffing
wheel should be installed on a
motor that turns the wheel at
approximately 3000 rpm. A convenient
method of holding the spray tip
while cleaning and polishing is to
place the tip over the drill end of
the spray tip cleaner tool J1243
and hold the body of the tip
against the buffing wheel. In this
way, the spray tip is rotated while
h. When the body of the spray tip is
clean, lightly buff the tip end in
the same manner. This cleans the
spray tip orifice area and will not
plug the orifices.
Use eye protection when using compressed air.
Wash the spray tip in clean fuel oil
and dry it with compressed air.
Clean and brush all of the passages
in the injector body, using fuel
hole cleaning brush J8152 and rack
hole cleaning brush J8150. Blow
out the passages and dry them with