Component description of fuel pump - GF47.20-P-2000BK

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ENGINE 113.967 in MODEL 219

ENGINE 113.964 in MODEL 164.1

ENGINE 113.971 in MODEL 251

Fig 1: Identifying Fuel Pump Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shows model 219

The fuel pump is integrated in the fuel feed module and is located in the right fuel tank chamber.

Task

Supplying an adequate quantity of fuel to the fuel system with the required pressure.

Function

The fuel pump draws the fuel from the swirl pot and drives it to the fuel filter with the integral fuel pressure regulator. Here, some of the fuel is already reserved for the suction jet pump, which also fills the swirl pot with fuel from the left fuel tank chamber.

Design

Two-stage flow pump integrated in fuel feed module.

While cornering when the fuel level is low, the swirl pot prevents the fuel pump from drawing air. The fuel is actuated through the fuel pump relay. The fuel pump relay is actuated through a ground signal from the ME control unit.