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

TRANSMISSION 722.9 in MODEL 164.1 /8, 216, 221, 251.0 /1 up to Model Year 8 Adjustment solenoid brake B1

Fig 1: Identifying Control Solenoid Valve Components

Courtesy of MERCEDES-BENZ USA

Location

The B1 brake control solenoid valve (VGS) is mounted on the electric control unit (VGS).

Fig 2: Identifying Control Solenoid Valve Components Location

Courtesy of MERCEDES-BENZ USA

Task

The B1 brake control solenoid valve (VGS) is actuated by the fully integrated transmission control (VGS) control unit and influences the position of the B1. regulating valve. The pressure in the B1 multi-disk brake depends on the position of the regulating valve and thus on the geometry of the B1 regulating valve. The B1 brake control solenoid valve (VGS) has a lowering characteristic.

This means that the oil pressure applied in the regulating valve B1 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 B1 brake control solenoid valve (VGS) thus supplies maximum pressure.

Design

In the B1 brake control solenoid valve (VGS) a proportional solenoid converts the electrical signals from the fully integrated transmission control (VGS) control unit (Y3/8n4). The float needle can also be moved into intermediate positions as a result.

Function

The B1 brake control solenoid valve (VGS) assigns a proportional pressure to the current which is controlled by the fully integrated transmission control (VGS) control unit.