TM 9-4310-397-14
(f)
Remove nozzle from tester and secure in holding fixture (Figure 6-9, 1). While holding pressure adjusting
screw (4), tighten pressure adjusting screw lock nut (2) 7 ft-lb (10 Nm) using the No. 18958 (English size)
or No. 24374 (metric size) torque wrench adapter (Figure 6-10,1) from (item 9, section III, appendix B).
Figure 6-10. Nozzle Pressure Adjusting Lock Nut Torque
(5) Adjust valve lift per the following:
CAUTION
The valve is fragile and use of excessive force when manually bottoming i t out can bend it.
(a)
Reconnect nozzle to tester. While pumping fuel through nozzle, hold pressure adjusting screw (Figure 6-
11, 1)and slowly turn lift adjusting screw (2) in (clockwise) until valve ceases to open.
Figure 6-11. Nozzle Pressure Lift Adjusting Screw
6-11
