Fuel System (Rev 1/97)
100
c. Release the nozzle valve. The nozzle valve should
slide into the nozzle seat by itself.
d. Rotate the nozzle valve in the nozzle seat about 90
degrees at a time, and repeat this test four or five
times.
e. Replace the nozzle valve and seat set if the nozzle
valve does not slide smoothly into the nozzle seat.
NOTE: A new nozzle valve and seat set should be
thoroughly cleaned and tested before being installed.
10. Assemble the injection nozzle and torque the nozzle nut
to 29 to 33 ft-lb (39 to 44 N•m).
11. Test the injection nozzle and adjust the opening pres-
sure as necessary. Add shims or replace the present
shim with a larger one to increase the opening pressure.
Remove shims or replace the present shim with a
smaller one to decrease the opening pressure.
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