Control solenoid valve component description - GF27.19-P-5147CWG

TRANSMISSION 722.9 in MODEL 204.0 up to Model Year 8

Control solenoid valve disk brake control B3

Fig 1: Identifying Control Solenoid Valve Components

Courtesy of MERCEDES-BENZ USA

Location

The multidisk brake control solenoid valve B3 is mounted on the fully integrated transmission control controller unit.

Fig 2: Identifying Fully Integrated Transmission Control Unit (B3)

Courtesy of MERCEDES-BENZ USA

Task

The multidisk brake control solenoid valve B3 is actuated by the fully integrated transmission control unit and influences the position of the regulating valve B3. The pressure in the multidisk brake B3 depends on the position of the regulating valve and therefore on the geometry of the regulating valve B3

The multidisk brake control solenoid valve B3 has a rising characteristic. This means that the oil pressure applied in the B3 regulating valve increases as the actuation current increases. In limp-home mode of the fully integrated transmission control (VGS) all the control solenoid valves are de-energized. The multidisk brake control solenoid valve B3 thus supplies no pressure.

Body

In the multidisk brake control solenoid valve B3, a proportional solenoid converts the electrical signals from the fully integrated transmission control unit. The float needle can also be moved into intermediate positions as a result.

Function

The multidisk brake control solenoid valve B3 assigns a proportional pressure to the current which is controlled by the fully integrated transmission control unit.