TM 9-4310-394-13
Figure 5-1. Fuel Injector Valve Assembly Replacement.
b.
Test. The fuel injector valve is tested by checking the spray pattern ejected from the nozzle of the valve. When
fuel is forced through the injector nozzle, it should have the following characteristics.
(1)
Spray pattern should be equal with the spray from each of the four nozzle ports coming out at the same
angle.
(2)
The spray from the nozzle should be a very fine mist.
(3)
The spray should be smooth and steady without any pulsing.
c.
Installation.
(1)
Install new fuel injection nozzle gasket (4) and spacer (5) onto fuel injection nozzle (3) before installing
nozzle into cylinder block.
NOTE
Make sure nozzle and sleeve surface is clean. Carbon deposits will build up on nozzle in the
form of flowers. Flowering lowers combustion performance significantly.
5-5
