The modular fuel sender assembly maintains optimum fuel level in the
reservoir (bucket). Fuel entering the reservoir (bucket) is drawn in by:
The fuel pump used in this system is part of the fuel sender assembly.
The fuel pump lower connector assembly prevents the transmission of vibration
and noise generated by the pump to the fuel tank.
Fuel enters the lower inlet port (secondary umbrella valve located inside
of lower inlet port) of the electric fuel pump after being filtered by the
external fuel strainer, and the fuel pump strainer. The initial function
of the pump is to fill the reservoir.
The second stage separates vapor from the fuel in the pump. This vapor
separation maximizes hot fuel handling and permits the vapor to return to
the fuel tank at lower pressure and temperature. By creating positive
fuel pressure, the pump then discharges the liquid fuel into the third
stage of the pump. The pump outlet allows the fuel volume to flow through
a check valve into the fuel pump flex pipe. The check valve seat is
molded inside the connector body. The check valve body and retainer
are assembled into the connector body. The check valve restricts fuel
back flow.
After the fuel pump flex pipe, the fuel exits the assembly through the
fuel feed output fitting on the molded cover. The cover also contains a fuel
return provision which connects to one of three hollow support pipes.