(2) Adjustment
•
Remove the cap nut and assemble a
nozzle to a nozzle tester.
•
With the adjusting screw loosened,
operate the nozzle 2 ~ 3 times to bleed it.
•
Operate the nozzle tester lever at the
specified rate.
•
Adjust the injection pressure to the
standard pressure using the adjusting
screw.
•
After adjusting the injection pressure,
tighten the cap nut to specified torque.
•
Re-check the injection pressure and see
if the spray pattern is normal. Spray
pattern should be uniform and free of
spattering.
(3) Testing
With the nozzle assembled to a nozzle tester and specified pressure applied, check the nozzle for
fuel leakage.
If the joints are free from leaks and the
needle valve is working normally, the
operation of the nozzle will be accompanied
by whistling sound.
Adjust the standard pressure by means of
the spring adjusting screw.
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