Mercedes-Benz ML320. Manual — part 168

Fig. 74: Shift Valve Pressure Regulating Valve, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Lubrication Pressure Regulating Valve, Location/Task/Function

Fig. 75: Lubrication Pressure Regulating Valve, Location/Task/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Lubrication Pressure Regulating Valve, Location

In the valve housing of the shift plate (2a). See Fig. 75.

Lubrication Pressure Regulating Valve, Task

2001 Mercedes-Benz ML320

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

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Lubricates and cools the mechanical part of the transmission, and limits the pressure in the torque
converter.

Lubrication Pressure Regulating Valve, Function

See LUBRICATION PRESSURE REGULATING VALVE, FUNCTION.

Lubrication Pressure Regulating Valve, Function

Operation - At the working pressure regulating valve (22) surplus oil is diverted to the lubrication pressure
regulating valve (23), from were the lubrication pressure (p-Sm) is used in regulating amounts to supply the
transmission lubrication system including the torque converter. See Fig. 76.

Fig. 76: Lubrication Pressure Regulating Valve, Function

2001 Mercedes-Benz ML320

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

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Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Overlap Regulating Valve, Location/Task/Function

Fig. 77: Overlap Regulating Valve, Location/Task/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Overlap Regulating Valve, Location

Each shift group is assigned one overlap regulating valve. The 1-2/4-5 overlap regulating valve (30a) is
installed in the valve housing of the shift plate (2b), the 2-3 overlap regulating valve (30b) and 4-5 (30c)
are installed in the valve housing of the shift plate (2a). See Fig. 77.

Overlap Regulating Valve, Location

The overlap regulating valve regulates the pressure reduction during a shift phase.

Overlap Regulating Valve, Function

See OVERLAP REGULATING VALVE, FUNCTION.

2001 Mercedes-Benz ML320

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

me

Overlap Regulating Valve, Function

Operation - During the shift phase the pressure in the disengaging shift actuator is controlled depending on the
engine load (modulating pressure (p-Mod)) and the pressure in the engaging shift actuator. The regulated
pressure is inversely proportional to the transfer capacity of the activating shift actuator (regulated overlap). See
Fig. 78.

2001 Mercedes-Benz ML320

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

me