Mercedes-Benz ML320. Service manual - part 142

 

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Mercedes-Benz ML320. Service manual - part 142

 

 

Automatic Transmission, Gear Ratios 
 
See AUTOMATIC TRANSMISSION, GEAR RATIOS

Power Transmission, Function 
 
See AUTOMATIC TRANSMISSION, POWER TRANSMISSION, FUNCTION

Power Flow In 1st Gear, Function 
 
See POWER FLOW IN 1ST GEAR, FUNCTION

Power Flow In 2nd Gear, Function 
 
See POWER FLOW IN 2ND GEAR FUNCTION

Power Flow In 3rd Gear, Function 
 
See POWER FLOW IN 3RD GEAR FUNCTION

Power Flow In 4th Gear, Function 
 
See POWER FLOW IN 4TH GEAR FUNCTION

Power Flow In 5th Gear, Function 
 
See POWER FLOW IN 5TH GEAR FUNCTION

Power Flow In Reverse, Function 
 
See POWER FLOW IN REVERSE, FUNCTION

Gearshift System, Function 
 
See FUNCTION OF GEAR SHIFT

Function Of Gear Change 
 
See FUNCTION OF GEAR CHANGE

Shifting N To D (1st Gear), Function 
 
See SHIFTING N TO D (1ST GEAR), FUNCTION

Shift From 1 to 2, Function 
 
See SHIFT FROM 1 TO 2, FUNCTION

 

2001 Mercedes-Benz ML320 

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

  

me 

 

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 

 

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 lubricating 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 

 

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 

 

 

 

 

 

 

 

 

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