Page 1209 of 4133
Fig. 22: Park Pawl, Design  
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.    
Structure    
 
2001 Mercedes-Benz ML320 
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662  
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        Page 1210 of 4133

The parking lock mechanism consists of the parking lock gear (4), the parking lock pawl (43), the cone (42) 
with spring (41) and the guide sleeve (4). See Fig. 22
. The parking shift lock is actuated by the locking pawl 
(39) and link rod (37) via the detent plate (38). 
Park Pawl, Function 
See Fig. 22. 
Operation  
In selector lever position "P", the cone (42) slides between the parking lock pawl (43) and the guide sleeve (40). 
The parking lock pawl (43) is therefore pushed against the parking lock gear (4). If the tooth of the parking lock 
pawl (43) does not engage in a tooth space when the vehicle is stationary, but rather touches a tooth of the 
parking lock gear (4), the cone (42) is pre-tensioned by the spring (41) and positioned ready for operation. If the 
parking lock gear (4) continues to turn, the parking lock pawl (43) engages in the next tooth space. 
To prevent damage due to misuse, the intervals between the tooth gaps are such that the park detent (43) can 
only engage when the vehicle is stationary or crawling at low speed. If the vehicle rolls faster, the shape of the 
teeth prevents the parking lock pawl (43) from engaging. 
AUTOMATIC TRANSMISSION MODEL AND COMPONENT INSTALLATION SURVEY AS-BUILT CONFIGURATION 
Transmission 722.6 In Model 163 
Component survey for automatic transmission. See COMPONENT SURVEY FOR AUTOMATIC 
TRANSMISSION MODEL 163. 
COMPONENT SURVEY FOR AUTOMATIC TRANSMISSION MODEL 163 
SURVEY OF SYSTEM COMPONENTS, AUTOMATIC TRANSMISSION, LOCATION/TASK/DESIGN/FUNCTION 
(WITHOUT TOUCH SHIFT) 
Starter Lock-Out Contact, Location/Task/Design/Function 
 
Sales DesignationModelEngineTransmission
ML 230163.136111.977722.660
ML 270 CDI163.113612.963722.661
ML 320163.154112.942722.662
ML 350163.157112.970722.674
ML 400163.128628.963722.673
ML 400 CDI163.128628.963722.666
ML 430163.172113.942722.663
ML 500163.175113.965722.666
ML 55 AMG163.174113.981722.666
NOTE: Transmission Without Touch Shift 722.6 In Model 163
 
2001 Mercedes-Benz ML320 
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662  
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        Page 1211 of 4133

See STARTER LOCK-OUT CONTACT, LOCATION/TASK/DESIGN/FUNCTION. 
Torque Converter, Location/Task/Design/Function 
 
See TORQUE CONVERTER, LOCATION/TASK/DESIGN/FUNCTION
. 
Wheel Speed Sensor Location/Task/Function 
 
See WHEEL SPEED SENSOR, LOCATION/TASK/FUNCTION
. 
Electric Control Module, Location/Task/Design/Function 
 
See ELECTRONIC CONTROL MODULE, LOCATION/TASK/DESIGN/FUNCTION
. 
D-4 Shift Isolating Mechanism, Location/Task/Design/Function 
 
See D
-4 SHIFT ISOLATING MECHANISM, LOCATION/TASK/DESIGN/FUNCTION. 
Location/Task/Design/Function Of Freewheel 
 
See LOCATION/TASK/DESIGN/FUNCTION OF FREEWHEEL
. 
Transmission Range Recognition Switch, Location/Task/Design/Function 
 
See TRANSMISSION RANGE RECOGNITION SWITCH, 
LOCATION/TASK/DESIGN/FUNCTION. 
Kickdown Switch, Location/Task/Design/Function 
 
See KICKDOWN SWITCH, LOCATION/TASK/DESIGN/FUNCTION MODEL 163 WITHOUT 
TOUCH SHIFT. 
Location/Task/Design/Function Of Command Valve 
 
See LOCATION/TASK/FUNCTION OF COMMAND VALVE
. 
Multiple-Disc Brake, Location/Task/Design/Function 
 
See MULTIPLE
-DISC BRAKE, LOCATION/TASK/DESIGN/FUNCTION. 
Multi-Plate Clutch, Location/Task/Design/Function 
 
See MULTI
-PLATE CLUTCH, LOCATION/TASK/DESIGN/FUNCTION. 
Upshift/Downshift Solenoid Valve, Location/Task/Design/Function 
 
See UPSHIFT/DOWNSHIFT SOLENOID VALVE, LOCATION/TASK/DESIGN/FUNCTION
. 
 
2001 Mercedes-Benz ML320 
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662  
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        Page 1212 of 4133

Floor Shift, Location/Task/Design/Function 
 
See FLOOR SHIFT, LOCATION/TASK/DESIGN/FUNCTION
. 
Location/Task/Design/Function Of Oil Pump 
 
See LOCATION/TASK/DESIGN/FUNCTION OF OIL PUMP
. 
Parking Lock, Location/Task/Design/Function 
 
See PARK PAWL, LOCATION/TASK/DESIGN/FUNCTION
. 
Planetary Gear Set, Location/Task/Design/Function 
 
See PLANETARY GEAR SET, LOCATION/TASK/DESIGN/FUNCTION
. 
Position Sensor, Location/Task/Function 
 
See POSITION SENSOR, LOCATION/TASK/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. 
Modulating Pressure Regulating Solenoid Valve, Location/Task/Design/Function 
 
See MODULATING PRESSURE REGULATING SOLENOID VALVE, 
LOCATION/TASK/DESIGN/FUNCTION. 
Shift Pressure Regulating Solenoid Valve, Location/Task/Design/Function 
 
See SHIFT PRESSURE REGULATING SOLENOID VALVE, 
LOCATION/TASK/DESIGN/FUNCTION. 
Working Pressure Regulating Valve, Location/Task/Function 
 
See WORKING PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION
. 
Regulating Valve Pressure Regulating Valve 
 
See REGULATING VALVE PRESSURE REGULATING VALVE, 
LOCATION/TASK/FUNCTION. 
Shift Pressure Regulating Valve, Location/Task/Function 
 
See 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 1213 of 4133

Shift Valve Pressure Regulating Valve, Location/Task/Function 
 
See SHIFT VALVE PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION
. 
Lubrication Pressure Regulating Valve, Location/Task/Function 
 
See LUBRICATION PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION
. 
Overlap Regulating Valve, Location/Task/Function 
 
See OVERLAP REGULATING VALVE, LOCATION/TASK/FUNCTION
. 
Torque Converter Lockup Clutch Regulating Valve, Location/Task/Function 
 
See TORQUE CONVERTER LOCKUP CLUTCH REGULATING VALVE, 
LOCATION/TASK/FUNCTION. 
Location/Task/Design Function Of R/P Lock 
 
See R/P LOCK, LOCATION/TASK/DESIGN/FUNCTION
. 
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
. 
Holding Pressure Shift Valve, Location/Task/Function 
 
See HOLDING PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
. 
Shift Pressure Shift Valve, Location/Task/Function 
 
SeeSHIFT PRESSURE SHIFT VALVE, LOCATION/TASK/FUNCTION
. 
Float, Location/Design/Function 
 
See SHIFT PRESSURE REGULATING VALVE, LOCATION/TASK/FUNCTION
. 
ETC Control Module, Location/Task 
 
See ETC CONTROL UNIT, LOCATION/TASK
. 
Temperature Sensor, Location/Task/Design/Function 
 
 
2001 Mercedes-Benz ML320 
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662  
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        Page 1214 of 4133
See TEMPERATURE SENSOR, LOCATION/TASK/DESIGN/FUNCTION. 
Selector Valve, Location/Task 
 
See SELECTOR VALVE, LOCATION/TASK
. 
Torque Converter Lock-Up Clutch, Location/Task/Design/Function 
 
See TORQUE CONVERTER LOCK
-UP CLUTCH, LOCATION/TASK/DESIGN/FUNCTION. 
Automatic Transmission, Contents, Function Description 
 
See AUTOMATIC TRANSMISSION, CONTENTS, FUNCTION DESCRIPTION
.  
D-4 Shift Isolating Mechanism, Location/Task/Design/Function 
NOTE: Transmission Without Touch Shift. 722.6 In Model 163
 
2001 Mercedes-Benz ML320 
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662  
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        Page 1215 of 4133
Fig. 23: D-4 Shift Isolating Mechanism  
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.    
Isolating Mechanism For D-4 Shift, Function  
 
 
2001 Mercedes-Benz ML320 
1998-03 AUTOMATIC TRANSMI  SSIONS Complete Transmissions - ML 320 - 722.662  
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        Page 1216 of 4133
The D-4 shift isolating mechanism is integrated into the floor shift. See Fig. 23. 
Isolating Mechanism For D-4 Shift, Task 
 
Isolates the shift rod to the transmission from the floor shift. 
Isolating Mechanism For D-4 Shift, Design 
 
The isolating mechanism for D-4 shift consists of: 
A Recess In The Intermediate Lever (68A)  
The Lock Lever (68B)  
Two Straight Pins (68C, 68D)  
Isolating Mechanism For D-4 Shift, Function 
 
See ISOLATING MECHANISM FOR D
-4 SHIFT, FUNCTION.  
Isolating Mechanism For D-4 Shift, Function 
 
2001 Mercedes-Benz ML320 
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662  
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