FUEL SYSTEM - TM-9-2320-366-20-10072

TM 9-2320-366-20-1

1-12. FUEL SYSTEM

Figure 1-14. Fuel System

The primary components of the fuel system are the fuel tank (1, Figure 1-14), 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.