TM 5-3895-359-14&P
Fig. 6 Fuel Injector Mounting
cage, spring cage, tip passages and tip fuel cavity is
compressed until the pressure force acting upward on
the needle valve is sufficient to open the valve against
the downward force of the valve spring. As soon as the
needle valve lifts off of its seat, the fuel is forced
through the small orifices in the spray tip and atomized
into the combustion chamber.
When the lower land of the plunger uncovers the lower
port in the bushing, the fuel pressure below the plunger
is relieved and the valve spring closes the needle valve,
ending injection.
*First numeral indicates number of spray holes, followed
Fig. 7. Removing Injector from Cylinder Head
by size of holes and angle formed by spray from holes.
Fig. 5 Injector Identification Chart
10-3-4