TM 5-3805-261-34
FUEL SYSTEM MAINTENANCE.
3-24.
Fuel Injection Nozzles. (Sheet 3 of 3)
TESTING
WARNING
Safety glasses must be worn
when testing fuel injection
nozzles. Failure to do so
may cause INJURY. If you are
injured, seek medical aid
immediately.
NOTE
All carbon must be removed
from injection nozzle tip
before proceeding with
testing.
Using injection nozzle tester and
calibration oil at 65 to 75 degrees
F, test injection nozzle for valve
opening pressure. Valve opening
pressure must be 2050 to 2350 psi.
NOTE
It is possible for the
pressure reading of the gage
to go down fast if the valve
makes a noise (chatters) when
it opens. It is also
possible for the pressure
reading of the gage to be
almost constant when the
valve in the fuel injection
nozzle opens.
INSTALLATION
1.
Position injection nozzle on top
of cylinder head (Figure 3-83).
2.
Install clamp and bolt.
NOTE
Return 130G Grader to
original equipment condition.
End of Task
3-115
