Mercedes-Benz ML320. Service manual - part 153

 

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Mercedes-Benz ML320. Service manual - part 153

 

 

Fig. 36: Electronic Control Module, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
 

Operation  

Signals from the ETC control module (N15/3) are converted into hydraulic functions in the electric valve 
control unit (Y3/6). The RPM sensors (Y3/6n2, Y3/6n3), the starter lockout contact (Y3/6s1) and the 
transmission oil temperature sensor (Y3/6b1) of the electrical control unit (Y3/6) supply the ETC control 
module (N15/3) with input signals. The solenoid valves are controlled by the ETC control module (N15/3) and 
trigger the hydraulic functions. See Fig. 36

Location/Task/Design/Function Of Freewheel 

Fig. 37: Function Of Freewheel 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA. 

Freewheel Location 

 

2001 Mercedes-Benz ML320 

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

  

me 

 

 
In the front planetary gear set a freewheel (F1, F2) is installed between the front sun gear (V1) and the 
stator shaft (8) and in the rear planetary gearset between the rear sun gear (H1) and the intermediate shaft 
(3). See 

Fig. 37

Freewheel Task 
 
Optimizes individual gearshifts. Support of the individual elements of a planetary gear set against each 
other or against the transmission housing in one direction of rotation in order to permit torque 
transmission. 

Freewheel Design 
 
The freewheels (F1, F2) consist of an outer race (12), an inner race (13), a number of clamping bodies 
(14) and a clamping body cage (15). 

Freewheel Function 
 
See FREEWHEEL, FUNCTION.  

Freewheel, Function 

 

2001 Mercedes-Benz ML320 

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

  

me 

 

Fig. 38: Freewheel Function 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

 

2001 Mercedes-Benz ML320 

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

  

me 

 

Operation - If the inner race (13) of the freewheel is locked and the outer race (12) turns in direction "A" , the 
locking elements (14) adopt a diagonal position on account of their special contours, allowing the freewheel 
function. See 

Fig. 38

. The outer race (12) slides over the locking elements (14) with negligible friction. If the 

rotation of the outer race (12) changes to direction "B", the locking elements (14) stand up and lock the outer 
and inner races (12, 13) together. 

Transmission Housing Breathing, Location/Task 

Fig. 39: Transmission Housing Breather, Location/Task 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

 

2001 Mercedes-Benz ML320 

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

  

me 

 

 

 

 

 

 

 

 

Content   ..  151  152  153  154   ..