Command valve, function - GF27.60-P-5138-04G

Transmission 722.6 

1-2/4-5 command valve shown 

Stationary phase (B1 engaged, K1 disengaged) 

Fig 1: Identifying Command Valve Function Diagram - Stationary Phase (B1 Engaged, K1 Disengaged)

Courtesy of MERCEDES-BENZ USA

1-2/4-5 command valve shown 

Shift phase (B1 disengaging, K1 engaging) 

Fig 2: Identifying Command Valve Function Diagram - Shift Phase (B1 Disengaging, K1 Engaging)

Courtesy of MERCEDES-BENZ USA

Operation 

When the end face is unpressurized (stationary phase), the working pressure is directed to the actuated shift element.

If the end face of the command valve (31) is subjected to shift valve pressure (p-SV) (shift phase), then the shift pressure (p-S) is switched to the engaging element and the overlap pressure (p-U) is switched to the disengaging element.