TM 9-2320-365-20-1
1-12. FUEL SYSTEM
Figure 1-7. Fuel System
The primary components of the fuel system are the fuel tank (1, Figure 1-7), fuel priming pump and fuel/water separator
(2), fuel shutoff solenoid (3), engine fuel governor (4), and secondary fuel filter (5). The mechanical fuel pump acts
as an engine priming feature. The fuel/water separator removes water and large solid particles from the fuel before
it is passed to the engine fuel governor. The fuel shutoff solenoid, when energized, frees the governor output shaft
to move to the FUEL ON position. When electrical power is removed from the fuel shutoff solenoid, the governor output
shaft is locked in the FUEL OFF position. The engine fuel governor contains a mechanical link to the fuel control
linkage and fuel transfer pump. The engine fuel governor responds to input from the accelerator pedal and causes the
fuel control rack to rotate, resulting in an increase or decrease in engine speed. The governor adjusts the amount of
fuel delivered to the engine as engine speed changes. The secondary fuel filter removes finer particles from the fuel
before it reaches the cylinder head. A fuel pressure regulator redirects excess fuel, through a fuel return hose, back
to the fuel tank.
1-10
