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Page Title:
Adjustment of shim type nozzle. |
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 TM
9-2815-210-34-2-2
( b ) A d j u s t m e n t o f shim type nozzle.
FRAME 1
1.
Unscrew connector tube (1) and takeoff nozzle and holder assembly (2).
2.
P u t nozzle and holder assembly (2) in soft-jawed vise.
NOTE
Add shims to increase pressure and take off shims to
d e c r e a s e p r e s s u r e . A 0.001-inch shim will change the
opening pressure about 150 psi. Pressure opening
should be between 3050 to 3150 psi.
Take off cap (3).
3.
A d d or take off shims (4) to increase or decrease pressure.
P u t on cap (3) and tighten to 40 to 45 pound-feet.
4.
T a k e nozzle and holder assembly (2) out of vise. Do nozzle opening pressure
5.
test. Refer to para 4-40a (1) .
D o steps 1 through 5 again until pressure is right. If not, disassemble, clean
6.
and inspect, and repair nozzle. Refer to para 4-40b, c, and d.
END OF TASK
4-398
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