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TM 55-1905-221-14-4
6-31. FUEL INJECTORS (Continued).
m. Carefully insert carbon
remover tool J8418-1 in the
injector nut. Turn it in a
clockwise direction to remove
the carbon deposits on the
flat spray tip seat as shown
below. Remove the carbon
deposits from the lower end
of the injector nut with
carbon remover J9418-5, in
the same manner. Use care
to prevent removing any metal
or setting up burrs on the
spray tip seat.
Wear protective eye goggles when using compressed air to prevent eye injury.
n. Wash the injector nut in
clean fuel oil and dry it
with compressed air. Carbon
deposits on the spray tip
seating surfaces of the
injector nut will result in
poor sealing and consequent
fuel leakage around the
spray tip.


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