GF27.19-P-5178ACW Control Solenoid Valve Modulating Pressure Component Description

GF27.19-P-5178ACW Control solenoid valve modulating pressure component description
- TRANSMISSION 722.618/640/646/695/699

Component Identification:

Location
The control solenoid valve for the modulating pressure is located on the supporting body of the automatic transmission's electric controller unit and it is pressed by a leaf spring (2c) against the valve housing of the valve body assembly (2a).

Task
The modulating pressure regulating solenoid valve controls the modulating pressure depending on the constantly changing operating conditions (e.g. load change and gear change).

Component Identification:

Design
Shown here, shifting phase

The modulating pressure control solenoid valve has a snug fit and is sealed with a gap seal (arrow) facing the shift plate valve body (2a). The contact springs (32) on the modulating pressure control solenoid valve engage in a slot in the conductor tracks (33). The force of the contact springs (32) ensures safe contacts.

Function
The modulating pressure control solenoid valve assigns a load-dependent regulated current from the electronic transmission-control control unit (N15/3) to a proportional pressure.