1997 MERCEDES-BENZ ML500 oil

Fig. 4: Removing & Installing Transmission With Torque Converter
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Remove/Install -
1 - Disconnect ground cable of battery. See DISCONNECT GROUND LEAD FROM BATTERY
.
2 - Remove transfer case. See TRANSFER CASE .
3 - Unbolt oil filler pipe (3) from crankcase. See Fig. 4
.
4 - Remove heat shield (5) and disconnect 13-pin plug connector (2).
5 - Remove locking clips (21) and remove shift.
6 - Unscrew oil drain screw on oil pan (14).
7.1 - Unscrew oil drain screw for torque converter (15).
8.1 - Detach wire for park lock interlock (7) at transmission.
9 - Lambda sensors for primary catalytic converters remove.
10 - Unscrew oil lines (4) to oil cooler from transmission.
11 - Remove cover in oil pan (18) and disconnect torque converter from driven plate at flange.
12 - Unscrew bolts of transmission (19) at crankcase and take out transmission downwards at an angle
using a lifting device. NOTE: Code radio, set clock, normalize power windows and set timer in vehicles
with stationary heater.
NOTE: Adjust shift rod using pliers. See Fig. 10
.
NOTE: If the transmission fluid is burnt or contains wear particles, the oil cooler
lines and oil cooler must be flushed out: Flush oil cooler and oil cooler
lines.
NOTE: Only up to A145272,X708318. For installation and removal, position
selector lever or range selector lever in position "P" and leave in position
"P" when cable/transmission is removed. See REMOVING & INSTALLING
WIRE CABLE/TRANSMISSION FOR PARKING SHIFT LOCK ON
TRANSMISSION.
NOTE: Only up to A145272, X708318.
Upon Installation: Adjust cables for parking shift lock. See ADJUSTING
WIRE CABLES FOR PARKING LOCK INTERLOCK.
NOTE: Upon Installation: Check function of parking shift lock.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:25 PMPage 8 © 2006 Mitchell Repair Information Company, LLC.

13 - Remove torque converter using 168 589 00 62 00 Grab Handle. See Fig. 9.
14 - Install in reverse order. Torque to specifications. See Fig. 5
- Fig. 8 .
15 - Inspect ATF level in automatic transmission, add ATF if necessary.
Fig. 5: Housing Torque Specifications

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.NOTE: Push retainer (11) upwards.
NOTE: Secure torque converter to prevent it from falling out.
NOTE: Grease the torque converter lightly on drive flange.
NOTE: When refilling or after an oil change pour in approximately 5 quarts of
transmission oil first.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:25 PMPage 9 © 2006 Mitchell Repair Information Company, LLC.

Fig. 6: Automatic Transmission Oil Pan Torque Specifications
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig. 7: Torque Converter Specifications

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:25 PMPage 10 © 2006 Mitchell Repair Information Company, LLC.

Shifting "N" To "D" (1st Gear), Function

See SHIFTING N TO D (1ST GEAR), FUNCTION
.
Function Of Shift From 1 To 2

See SHIFT FROM 1 TO 2, FUNCTION
.
Limp-home Mode, Function

See LIMP
-HOME MODE, FUNCTION.
Operating Pressure, Function

See OPERATING PRESSURE, FUNCTION
.
Lubricating Pressure, Function

See LUBRICATING PRESSURE, FUNCTION
.
Shift Pressure, Function

See SHIFT PRESSURE, FUNCTION
.
Modulating Pressure, Function

See MODULATING PRESSURE, FUNCTION
.
Shift Valve Pressure, Function

See SHIFT VALVE PRESSURE, FUNCTION
.
Manual Drive Mode Selection, Function

See MANUAL DRIVE MODE SELECTION, FUNCTION
.
Oil Level Control, Function

See OIL LEVEL CONTROL, FUNCTION
.
Torque Converter Lockup Clutch Control, Function

See FUNCTION OF TORQUE CONVERTER LOCKUP CLUTCH CONTROL
.
Torque Converter Lockup Clutch Control Pressure, Function

See TORQUE CONVERTER LOCKUP CLUTCH CONTROL PRESSURE, FUNCTION
.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:25 PMPage 22 © 2006 Mitchell Repair Information Company, LLC.

Limp-Home Mode, Function

See LIMP
-HOME MODE, FUNCTION.
Operating Pressure, Function

See OPERATING PRESSURE, FUNCTION
.
Lubricating Pressure, Function

See LUBRICATING PRESSURE, FUNCTION
.
Shift Pressure, Function

See SHIFT PRESSURE, FUNCTION
.
Modulating Pressure, Function

See MODULATING PRESSURE, FUNCTION
.
Regulating Valve Pressure, Function

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

See SHIFT VALVE PRESSURE, FUNCTION
.
Hydropneumatic Transmission Control, Function

See HYDROPNEUMATIC TRANSMISSION CONTROL, FUNCTION
.
Manual Drive Mode Selection, Function

See MANUAL DRIVE MODE SELECTION, FUNCTION
.
Oil Level Control

See OIL LEVEL CONTROL, FUNCTION
.
Function Of Torque Converter Lockup Clutch Control

See FUNCTION OF TORQUE CONVERTER LOCKUP CLUTCH CONTROL
.
Torque Converter Lockup Clutch Control Pressure, Function

See TORQUE CONVERTER LOCKUP CLUTCH CONTROL PRESSURE, FUNCTION

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:25 PMPage 31 © 2006 Mitchell Repair Information Company, LLC.

Shift-Lock, Function

See SHIFT
-LOCK FUNCTION.
Park Pawl Interlock, Function

See PARK PAWL INTERLOCK, FUNCTION
.
Steering Lock Interlock, Function

See STEERING LOCK INTERLOCK, FUNCTION
.
Survey Of System Components, Automatic Transmission, Location/Task/Design/Function

See SURVEY OF SYSTEM COMPONENTS, AUTOMATIC TRANSMISSION,
LOCATION/TASK/DESIGN/FUNCTION.
Automatic Transmission, Function
Automatic transmission 722.6 is an electronically controlled 5-speed transmission with a lockup clutch in the
torque converter.
The ratios for the gear stages are achieved by three planetary gear sets. The 5th gear is designed with a step-up
ratio as an overdrive.
Shifting is initiated electronically. The gears are shifted by the corresponding combination of three
hydraulically actuated multi-disc clutches and two mechanical freewheels.
Basically automatic transmission 722.6 with electronic control offers the following advantages:
Reduced Fuel Consumption
Improved Shift Comfort
More Favorable Gear Steps As A Result Of 5 Gears
Enhanced Life And Reliability
Reduced Servicing Costs
The electrohydraulic control unit is bolted onto the bottom of the transmission housing. The end of the
transmission is formed by an oil pan made of sheet steel.
The oil pressure for the converter lockup clutch and center multiple-disc clutch is supplied via holes in the input
shaft. The oil pressure to the rear mulitiple-disc clutch is routed through the output shaft. The lubricating oil is
supplied and distributed by additional bore holes in both shafts. All bearing points of the gear sets as well as
freewheels and shift elements are supplied with lubricatin
g oil. NOTE: Transmission Without Touch Shift 722.6 In Model 163.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:25 PMPage 32 © 2006 Mitchell Repair Information Company, LLC.

The parking lock gear and drive flange are connected to the output shaft by gearing.
Freewheels F1 and F2 optimize shifting. The front freewheel (F1) rests against the stator shaft extension on the
transmission side and connects the sun gear of the front planetary gear set tot the transmission housing in the
locking direction.
The torque converter housing and transmission housing are made of a metal alloy. They are bolted together and
centered via the outer multiple-disc carrier of the multiple-disc brake B1. A coated intermediate panel seals the
two components.
The oil pump and outer multiple-disc carrier of the front multiple-disc brake are bolted to the converter housing.
The mechanical part consists of the propeller shaft, output shaft, a sun gear shaft and three planetary gearsets
which are coupled together.
In transmissions for powerful engines, the planetary gearsets have 4 planetary gears, while for less powerful
engines the front and rear planetary gear system has three planetary gear wheels. The stator shaft is pressed into
this and is secured against turning by a spline.
The rear freewheel (F2) connects the sun gear of the center planetary gear set to the sun gear of the rear
planetary gearset in the locking direction.
The electrohydraulic control unit consists of the shift plate made of light alloy for hydraulic control and an
electronic control unit.
The electrical control unit consists of a supporting body made of plastic in which the electrical components are
combined. The shell is screwed tot he shift plate. Conductor tracks which are integrated into the shell, connect
the electric components to a plug connector. This 13-pin plug connector forms the connection with the vehicle-
side wiring harness and with the ETC 5 (Electronic Transmission Control) control module (N15/5) via a
bayonet lock.
Automatic Transmission, Location Of Mechanical Parts

See AUTOMATIC TRANSMISSION, LOCATION OF MECHANICAL PARTS
.
Automatic Transmission, Location Of Electric/Electronic Components

See AUTOMATIC TRANSMISSION, LOCATION OF ELECTRIC/ELECTRONIC
COMPONENTS.
Automatic Transmission, Location Of Hydraulic Components

See AUTOMATIC TRANSMISSION, POSITION OF HYDRAULIC COMPONENTS
.
Automatic Transmission, Location Of Components, Floor Shift

See AUTOMATIC TRANSMISSION, LOCATION OF COMPONENTS, FLOOR SHIFT
.

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:26 PMPage 33 © 2006 Mitchell Repair Information Company, LLC.

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
me
Saturday, October 02, 2010 3:15:26 PMPage 43 © 2006 Mitchell Repair Information Company, LLC.