TESTING - Continued
NOTE
After needle valve opening pressure test is complete, continue injector assembly.
6.
Injector holding pressure check procedures:
a.
Place fuel injector in diesel fuel injector test fixture (Figure 17, Item 39).
b.
Operate pump handle (Figure 17, Item 40) until test gage (Figure 17, Item 45) pressure reaches
2200 psi (15168 kPa).
c.
Close fuel shut off valve. Start timing when pressure reaches 2000 psi (13789 kPa) and stop at
1500 psi (10342 kPa). Minimum time is 5 seconds.
d.
If pressure drops in less than 5 seconds, check for leaks around spray tip, preformed packing, and
fuel connectors.
e.
Pop fuel injector several times with popping handle (Figure 17, Item 38) until test gage
(Figure 17, Item 45) shows no pressure to avoid fuel spray when removing injector from diesel fuel
injector test fixture (Figure 17, Item 39).
7.
Cover injector ports to prevent dirt from entering injector.
D
D
C
B
B
A
A
C
MAINT_289
Figure 17.
Fuel Injector Pressure Test.
END OF TASK
FOLLOW ON TASK
Install injectors (WP 0083).
END OF TASK
END OF WORK PACKAGE
TM 9-2815-205-24
0084
0084-22