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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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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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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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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Page 1421 of 4133
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Page 1422 of 4133
Fig. 141: Torque Converter Lockup Clutch PWM Solenoid Valve
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Structure
The torque converter lockup PWM solenoid valve (Y3/6y6) is sealed off to the valve body of the shift plate (2a)
by an O-ring (34) and a seal (arrow). See Fig. 141
. The contact springs (32) on the PWM converter lockup
solenoid valve (Y3/6y6) engage in a slot in the conductor tracks (33). The force of the contact spring (32)
ensures safe contacts.
Manual Drive Mode Selection, Function (Without Touch Shift)
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Page 1423 of 4133
2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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Page 1424 of 4133

Fig. 142: Manual Drive Mode Selection, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Operation
With the selector lever on the floor shift it is possible to adapt the automatic gearshift sequence to suit specific
operating conditions. Although the selector lever position can be changed the forward gears while driving, the
electronic transmission control (ETC) prevents over-revving of the engine. See Fig. 142
.
Floor Shift, Location/Task/Design/Function
See .
Reverse Lamp Switch, Location/Task/Function
See REVERSE LAMP SWITCH, LOCATION/TASK/FUNCTION
.
Shift Detent Mechanism, Location/Task/Design/Function
See SHIFT DETENT MECHANISM, LOCATION/TASK/DESIGN/FUNCTION (WITHOUT
TOUCH SHIFT).
D-4 Shift Isolating Mechanism, Location/Task/Design/Function
See D
-4 SHIFT ISOLATING MECHANISM, LOCATION/TASK/DESIGN/FUNCTION.
Location/Task/Design/Function Of R/P Lock
See LOCATION/TASK/DESIGN/FUNCTION OF R/P LOCK (WITHOUT TOUCH SHIFT)
.
Position Sensor, Location/Task/Function
See POSITION SENSOR, LOCATION/TASK/FUNCTION
.
Transmission Range Recognition Switch, Location/Task/Design/Function
See TRANSMISSION RANGE RECOGNITION SWITCH,
LOCATION/TASK/DESIGN/FUNCTION.
ETC Control Module, Location/Task
See ETC CONTROL UNIT, LOCATION/TASK
.
Floor Shift, Location/Task/Design/Function
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1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
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