Mercedes-Benz ML320. Manual — part 169

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me

Fig. 78: Overlap Regulating Valve, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Torque Converter Lockup Clutch Regulating Valve, Location/Task/Function

Fig. 79: Torque Converter Lockup Clutch Regulating Valve, Location/Task/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Torque Converter Lockup Clutch Regulating Valve, Location

In the valve housing of the shift plate. See Fig. 79.

Torque Converter Lockup Clutch Regulating Valve, Task

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me

Hydraulic control of the torque converter lockup clutch and distribution of the lubricating oil.

Torque Converter Lockup Clutch Regulating Valve, Function

See TORQUE CONVERTER LOCKUP CLUTCH REGULATING VALVE, FUNCTION.

Torque Converter Lockup Clutch Regulating Valve, Function

Fig. 80: Torque Converter Lockup Clutch Regulating Valve, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Operation - The converter lockup clutch regulating valve (27) regulates the working pressure in the converter

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me

lockup clutch (p-KUB) depending on the control pressure in converter lockup clutch (p-S/KUB). See Fig. 80.

Depending on the working pressure in the converter lockup clutch (p-KUB) the converter lockup clutch (KUB)
is:



Engaged



Disengaged



N slip mode

In the lower position of the converter lockup clutch regulating valve (27) lubricating oil (p-Sm) flows through
the torque converter and oil cooler (65) into the transmission (converter lockup clutch depressurized). In its
regulating position (slipping, torque converter lockup clutch pressurized), a reduced volume of lubricating oil
(p-Sm) flows through the annular passage (27a) bypassing the torque converter and passing direct through the
oil cooler (65) into the transmission. The other part of the lubricating oil (p-Sm) is led via the restrictor (a) into
the torque converter for cooling the converter lockup clutch (KUB).

R/P Lock, Location/Task/Design/Function

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me