|
| |
TM 9-4110-257-14
Figure 5-35. Nozzles
WARNING
Before applying pressure to the nozzle tester, be sure that all
connections are tight, and that the fittings are not damaged. Fluid
escaping from a very small hole can be almost invisible. Use a piece
of cardboard or wood, rather than hands, to search for suspected
leaks.
Fuel from the spray orifices can penetrate clothing and skin causing
serious personal injury. The nozzle tip should always be directed
away from the operator. Enclosing the nozzle in a transparent cover
is recommended. Place a clear, protective shield around spray zone
to avoid possible personal injury from spray.
If injured by escaping fluid, see a doctor at once. Serious infection or
reaction can develop if proper medical treatment is not administered
immediately.
(2)
Operate the injector test bench lever rapidly. The nozzle assembly (3) should chatter audibly and spray evenly.
(3)
With pressure gage reading injector test bench pressure, press the lever slowly and steadily until fuel is sprayed
from nozzle assembly (3). The pressure registered on the gauge should be 3,071 to 3,471 psi (21,190 to 23,950
kPa). If pressure is not met, replace nozzle.
(4)
Slowly press injector test bench hand lever until the pressure gauge reads 2,986 psi (20,603 kPa). Hold at this
pressure for 10 seconds. No diesel fuel should accumulates at the nozzle tip. If fuel is detected, replace nozzle.
(5)
If no failure was indicated, install nozzle assembly (3).
5-85
|
