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

TRANSMISSION 722.9 in MODEL 204.0 up to Model Year 8

Adjustment solenoid clutch control K3

Fig 1: Identifying Control Solenoid Valve Components

Courtesy of MERCEDES-BENZ USA

Location

The clutch control solenoid valve K3 is mounted on the fully integrated transmission control controller unit.

Fig 2: Identifying Fully Integrated Transmission Control Unit (K3)

Courtesy of MERCEDES-BENZ USA

Task

The clutch control solenoid valve K3 is actuated by the fully integrated transmission control unit and influences the position of the regulating valve K3. The pressure in the multidisk clutch K3 depends on the position of the regulating valve and therefore on the geometry of the regulating valve K3 The clutch control solenoid valve K3 has a falling characteristic.

This means that the oil pressure applied in the regulating valve K3 reduces 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 clutch control solenoid valve K3 thus supplies maximum pressure.

Body

In the clutch control solenoid valve K3, 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 clutch control solenoid valve K3 assigns a proportional pressure to the current which is controlled by the fully integrated transmission control unit.