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Planetary gear set, location/task/design/function - GF27.50-P-5100N

TRANSMISSION 722.9 in MODEL 171.4, 203, 230 up to Model Year 08/modification year 07 Ravigneaux gear set 

TRANSMISSION 722.9 in MODEL 209, 211, 215, 219, 220 Ravigneaux gear set 

TRANSMISSION 722.9 in MODEL 463.303/340/341 

Fig 1: Locating Ravigneaux Gear Set
G07287869Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Planetary gear set, location The Ravigneaux gear set (9) is located in the mechanical part of the transmission.  
Planetary gear set, task Power transmission and production of different gear ratios.  
Planetary gear set, design The Ravigneaux gear set (9) used consists of 2 ring gears, a planet carrier, a sun gear as well as short and long planetary gears.  
Planetary gear set, function   GF27.50-P-5100-01N