GF27.60-D-5140HG Regulating Valve, Component Description

GF27.60-D-5140HG Regulating Valve, Component Description
- TRANSMISSION 722.6


Torque converter lockup clutch regulating valve





2a Valve body of shift plate
2b Valve body of shift plate
27 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.





0 Oil sump drain
65 Oil cooler
72 Torque converter lockup clutch regulating valve
72a Annular passage throttle

a Throttle
A Torque converter output
B Torque converter input
C Lubrication points for transmission 722.6
KUB Torque converter lockup clutch

p-A Working pressure
p-KUB Torque converter lockup clutch working pressure
p-S/KUB Torque converter lockup clutch control pressure
p-Sm Lubrication pressure
p-SV Shift valve pressure

Y3/6y6 Torque converter lockup PWM solenoid valve

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.