TM 5-3805-261-20
PRINCIPLES OF OPERATION. (cont)
1-15.
FUEL SYSTEM. (cont)
f.
Fuel Injector Pump. Fuel from primary fuel filter flows to gear driven fuel injection pump. Fuel is again
filtered, then metered accurately and applied to each cylinder at high pressure through
fuel injector nozzles. The fuel is
delivered at precisely timed intervals.
The throttle control lever controls fuel metering through a cable connection. This also attaches to an accelerator pedal.
The centrifugal speed regulating governor is located within the fuel injector pump housing.
g.
Fuel Filters. Primary filter is mounted on the fuel tank. Secondary filter is mounted on the fuel injector pump
housing. Primary and secondary fuel filters remove fuel oil impurities which may damage the fuel injector pump and/or
nozzles.
h.
Fuel Strainer (Figure 1-8). Located in fuel tank fill opening. Prevents passage of foreign material into the
fuel tank.
Figure 1-8.
i.
Ether Aid Cold Start Kit (Figure 1-9). The ether starting aid bottle and operator controlled electric activator
are mounted on rear surface of fuel tank toward the right side of the vehicle. Ether is injected through a tube attached to
the intake manifold. Temperature sensitive automatic closure switch mounted on water pump prevents ether aid use
above 32 degrees F.
Figure 1-9
1-24
