Mercedes-Benz ML320. Service manual - part 166

In the valve housing of the shift plate. See Fig. 69. 

Working Pressure Regulating Valve, Task 
 
Regulates the primary pressure of the hydraulic system. 

Working Pressure Regulating Valve, Function 
 
See WORKING PRESSURE REGULATING VALVE, FUNCTION.  

Working Pressure Regulating Valve, Function 

 

2001 Mercedes-Benz ML320 

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

  

me 

 

 

2001 Mercedes-Benz ML320 

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

  

me 

 

Fig. 70: Shift Pressure Regulating Solenoid Valve, Design
Courtesy of MERCEDES-BENZ OF NORTH AMERICA. 

Operation - The working pressure (p-A) is regulated at the working pressure regulating valve (22) depending 
on the load (modulating pressure (p-Mod)) and depending on the gear (p-K1, p-K2). See Fig. 70. A minimum 
level (basic pressure) is adjusted by the spring in the working pressure regulating valve (22). 

Regulating Valve Pressure Regulating Valve, Location/Task/Function 

Fig. 71: Regulating Valve Pressure Regulating Valve, Location/Task/Function 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA. 

Regulating Valve Pressure Regulating Valve, Location 
 

 

2001 Mercedes-Benz ML320 

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

  

me 

 

In the valve housing of shift plate (2b). See Fig. 71. 

Regulating Valve Pressure Regulating Valve, Task 
 
Controls the regulating valve pressures. 

Regulating Valve Pressure Regulating Valve, Function 
 
See REGULATING VALVE PRESSURE REGULATING VALVE, FUNCTION.  

Regulating Valve Pressure Regulating Valve, Function 

Operation - The regulating valve pressure (p-RV) is controlled up to the maximum pressure at the regulating 
valve pressure regulating valve (25) depending on the working pressure (p-A). See Fig. 72. 

 

2001 Mercedes-Benz ML320 

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

  

me