MERCEDES-BENZ ML430 1997 Complete Repair Manual
Page 1411 of 4133
Multiple-Disc Brake, Location/Task/Design/Function
See MULTIPLE
-DISC BRAKE, LOCATION/TASK/DESIGN/FUNCTION.
Multiplate Clutch, Location/Task/Design/Function
See MULTI
-PLATE CLUTCH, LOCATION/TASK/DESIGN/FUNCTION.
Holding Pressure Shift Valve, Location/Design/Function
See HOLDING PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
.
Shift Pressure Shift Valve, Location/Design/Function
See SHIFT PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
.
Command Valve, Location/Design/Function
See LOCATION/TASK/FUNCTION OF COMMAND VALVE
.
Selector Valve, Location/Task
See SELECTOR VALVE, LOCATION/TASK
.
Location/Task/Design/Function Of Oil Pump
See LOCATION/TASK/DESIGN/FUNCTION OF OIL PUMP
.
Regulating Valve Pressure Regulating Valve, Location/Task/Function
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 242 © 2006 Mitchell Repair Information Company, LLC.
Page 1412 of 4133
Fig. 136: Regulating Valve Pressure Regu lating Valve, Location/Task/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Regulating Valve Pressure Regulating Valve, Location
In the valve housing of shift plate (2b). See Fig. 136
.
Regulating Valve Pressure Regulating Valve, Task
Controls the regulating valve pressures.
Regulating Valve Pressure Regulating Valve, Function
See REGULATING VALVE PRESSURE REGULATING VALVE, FUNCTION
.
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Page 1413 of 4133
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).
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Page 1414 of 4133
Fig. 137: Regulating Valve Pressure Regulating Valve, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Regulating Valve Pressure, Function
Operation
The regulating valve pressure is regulated at the regulating valve pressure regulating valve depending on the
working pressure up to a maximum pressure of 8 bar. It supplies the modulating pressure regulating solenoid
valve (Y3/6y1), the shift pressure regulating solenoid valve (Y3/6y2) and the shift valve pressure regulating
valve.
Regulating Pressure Valve Pressure Regulating Valve, Location/Task/Function
See REGULATING VALVE PRESSURE REGULATING VALVE,
LOCATION/TASK/FUNCTION.
Shift Pressure Regulating Solenoid Valve, Location/Task/Design/Function
See SHIFT PRESSURE REGULATING SOLENOID VALVE,
LOCATION/TASK/DESIGN/FUNCTION.
Modulating Pressure Regulating Solenoid Valve, Location/Task Design/Function
See MODULATING PRESSURE REGULATING SOLENOID VALVE,
LOCATION/TASK/DESIGN/FUNCTION.
Shift Valve Pressure Regulating Valve, Location/Task/Function
See SHIFT VALVE PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION
.
Upshift/Downshift Solenoid Valve, Location/Task/Design/Function
See UPSHIFT/DOWNSHIFT SOLENOID VALVE, LOCATION/TASK/DESIGN/FUNCTION
.
Multiple-Disc Brake, Location/Task/Design/Function
See MULTIPLE
-DISC BRAKE, LOCATION/TASK/DESIGN/FUNCTION.
Multiplate Clutch, Location/Task/Design/Function
See MULTI
-PLATE CLUTCH, LOCATION/TASK/DESIGN/FUNCTION.
Holding Pressure Shift Valve, Location/Task/Function
See HOLDING PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
.
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 245 © 2006 Mitchell Repair Information Company, LLC.
Page 1415 of 4133
Shift Pressure Shift Valve, Location/Task/Function
See SHIFT PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
.
Overlap Regulating Valve, Location/Task/Function
See OVERLAP REGULATING VALVE, LOCATION/TASK/FUNCTION
.
Location/Task/Function Of Command Valve
See LOCATION/TASK/FUNCTION OF COMMAND VALVE
.
Selector Valve, Location/Task
See SELECTOR VALVE, LOCATION/TASK
.
Location/Task/Design/Function Of Oil Pump
See LOCATION/TASK/DESIGN/FUNCTION OF OIL PUMP
.
Shift Valve Pressure, Function
Operation
The shift valve pressure is derived from the regulating valve pressure, regulated at the shift valve pressure
regulating valve and is then present:
1-2 And 4-5 Shift Solenoid Valve (Y3/6Y3)
3-4 Shift Solenoid Valve (Y3/6Y4)
2-3 Shift Solenoid Valve (Y3/6Y5)
Torque Converter Lockup PWM Solenoid Valve (Y3/6Y6)
3-4 And 2-3 Shift Pressure Valve Shift Valve
The shift valve pressure controls the command valves via the upshift/downshift solenoid valves.
Upshift/Downshift Solenoid Valve, Location/Task/Design/Function
See UPSHIFT/DOWNSHIFT SOLENOID VALVE, LOCATION/TASK/DESIGN/FUNCTION
.
Location/Task/Design/Function Of PWM Solenoid Valve, Torque Converter Lockup Clutch
See LOCATION/TASK/DESIGN/FUNCTION OF PWM SOLENOID VALVE, TORQUE
CONVERTER LOCKUP CLUTCH.
Shift Pressure Regulating Valve, Location/Task/Function
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Page 1416 of 4133
See SHIFT PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION.
Shift Pressure Shift Valve, Location/Design/Function
See SHIFT PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
.
Shift Valve Pressure Regulating Valve, Location/Task/Function
See SHIFT VALVE PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION
.
Shift Pressure Regulating Solenoid Valve, Location/Task/Design/Function
See SHIFT PRESSURE REGULATING SOLENOID VALVE,
LOCATION/TASK/DESIGN/FUNCTION.
Multiple-Disc Brake, Location/Task/Design/Function
See MULTIPLE
-DISC BRAKE, LOCATION/TASK/DESIGN/FUNCTION.
Multiplate Clutch, Location/Task/Design/Function
See MULTI
-PLATE CLUTCH, LOCATION/TASK/DESIGN/FUNCTION.
Holding Pressure Shift Valve, Location/Design/Function
See HOLDING PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
.
Overlap Regulating Valve, Location/Design/Function
See OVERLAP REGULATING VALVE, LOCATION/TASK/FUNCTION
.
Location/Task/Function Of Command Valve
See LOCATION/TASK/FUNCTION OF COMMAND VALVE
.
Selector Valve, Location/Task
See SELECTOR VALVE, LOCATION/TASK
.
Location/Task/Design/Function Of Oil Pump
See LOCATION/TASK/DESIGN/FUNCTION OF OIL PUMP
.
Overlap Regulating Valve, Location/Task/Function
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 247 © 2006 Mitchell Repair Information Company, LLC.
Page 1417 of 4133
Fig. 138: 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 va lve. 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 housin g of the shift plate (2a). See Fig. 138
.
Overlap Regulating Valve, Location
The overlap regulating valve regulates th e pressure reduction during a shift phase.
Overlap Regulating Valve, Function
See OVERLAP REGULATING VALVE, FUNCTION
.
Shift Pressure Shift Valve, Location/Task/Function
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 248 © 2006 Mitchell Repair Information Company, LLC.
Page 1418 of 4133
Fig. 139: Shift Pressure Shift Valve, Location/Task/Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Shift Pressure Shift Valve, Location
Each shift group possesses one shift pr essure shift valve. The 1-2/4-5 shift pressure shift valves (29a) and
2-3 shift pressure shift valve (29b) are installed in the valve housing of the shift plate (2b), the 3-4 shift
pressure shift valve (29c) is installed in the valve housing of the shift plate (2a). See Fig. 139
.
Shift Pressure Shift Valve, Task
To assign shift pressure to the engaging shift actuator and to assign the overlap pressure, controlled by the
overlap re
gulating valve, to the disengaging shift actuator.
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 249 © 2006 Mitchell Repair Information Company, LLC.
Page 1419 of 4133
Shift Pressure Shift Valve, Function
See SHIFT PRESSURE SHIFT VALVE, FUNCTION
.
Shift Pressure Shift Valve, Function
Fig. 140: Shift Pressure Shift Valve, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 250 © 2006 Mitchell Repair Information Company, LLC.
Page 1420 of 4133
When the multiple-disc brake (B) is engaged, the working pressure (p-A) is applied to the end face of the shift
valve (29) via the command valve (31). See Fig. 140
. Its shift condition is retained in the shift phase, whilst the
shift element pressure acting on the end face and which is variable during the shift phase is replaced by a
corresponding, constant pressure.
When the multiple-disc clutch (K) is engaged (K) the end face of the shift pressure shift valve (29) is
depressurized during the stationary and shift phases, here the shift condition is also retained during the shift
phase.
Torque Converter Lockup Clutch PWM Solenoid Valve, Design
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Saturday, October 02, 2010 3:15:29 PMPage 251 © 2006 Mitchell Repair Information Company, LLC.