Regulating Valve, Component Description - GF27.60-D-5140HG
Transmission 722.6 in MODEL 906.111/113/131/133/135/153/155/211/213/231/233/235/253/255/611/613/631/633/635/637/653/655/657/711/713/731/733/735
Torque converter lockup clutch regulating valve
Location
The torque converter lockup clutch regulating valve is located in the shift plate valve housing.
Task
It controls the torque converter lockup clutch hydraulically and distributes the lubricating oil.
Function
The torque converter lockup clutch regulating valve regulates the converter lockup clutch working pressure depending on the torque converter lock-up clutch control pressure.
Depending on the level of the torque converter lockup clutch working pressure the torque converter lockup clutch is engaged, disengaged or in slip mode.
In the lower position of the torque converter lockup clutch regulating valve lubricating oil flows through the torque converter and the oil cooler into the transmission 722.6 (torque converter lockup clutch unpressurized).
In its control position (slip mode, pressure applied to the torque converter lockup clutch) a reduced lubricating oil quantity flows through the annular gap while bypassing the converter directly through the oil cooler into the transmission 722.6. The other part of the lubricating oil is lead into the torque converter via the throttle to cool the torque converter lockup clutch.