TM 10-4320-315-10
Table 2-3. Pumping Assembly Fuel Controls and Indicators
Controls or indicators
Function
1.
Fuel Selector Valve
Used to select fuel tank or auxiliary fuel supply. When
AUXILIARY ON LINE position is indicated, auxiliary tank
supplies fuel through AUXILIARY FUEL INLET connector
to engine. When FUEL ON is indicated fuel is supplied by
trailer tank.
2.
Fuel Return Valve
Used to direct flow of unused fuel to either the trailer tank
or auxiliary fuel supply container. When AUXILIARY LINE
RETURN is indicated, excess fuel is directed to auxiliary
container through AUXILIARY FUEL RETURN connector
When FUEL TANK RETURN position is selected, return
flow is directed to trailer tank.
2-7
