Mechanical design of the transmissions - RA27007229060X(27-9060)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

4-speed transmission

Fig 1: Sectional View Of 4-Speed Transmission Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The mechanical section of the automatic transmission has a planet gear train in two-group design.

The front group is a Ravigneaux planet gear set while the rear group is a single planet gear set.

The individual transmission elements are connected as follows:
- Turbine wheel (2) of the torque converter through the input shaft (5) to the large sunwheel of the Ravigneaux planet gear set (12).
- Planet carrier of the Ravigneaux planet gear set (12) to the internally-toothed disc carrier of clutch K1 (31), the internally-toothed disc carrier of the multiple-disc brake B3 (30) and to the annulus of the rear planet gear set (18).
- Brake band drum of brake band B1 (10) and externally-toothed disc carrier of clutch K1 (31) to the small sunwheel of the Ravigneaux planet gear set (12).
- Annulus of the Ravigneaux planet gear set (12) through the connection carrier to the outer ring of the freewheel F1 (29) and to the internally-toothed disc carrier of clutch K2 (28).
- Brake band drum of brake band B2 (15), externally-toothed disc carrier of clutch K2 (28) and inner ring of freewheel F1 (29) to the sunwheel of the rear planet gear set (18).
- Planet carrier of the rear planet gear set (18) to the output shaft (20).
5-speed transmission

Fig 2: Sectional View Of 5-Speed Transmission Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The mechanical section of the 5-speed automatic transmission has a planet gear train in three-group design. The front group is a Ravigneaux planet gear set while the middle and rear groups are each a single planet gear set. The individual transmission elements are connected as follows:

Turbine wheel of the torque converter through the input shaft (5) to the large sunwheel of the Ravigneaux planet gear set (12).
Planet carrier of the Ravigneaux planet gear set (12) to the internally-toothed disc carrier of clutch K1 (31), internally-toothed disc carrier of the multiple-disc brake B3 (30) and to the annulus of the middle planet gear set (13).
Brake band drum of brake band B1 (10) and externally-toothed disc carrier of clutch K1 (31) to the small sunwheel of the Ravigneaux planet gear set (12).
Annulus of the Ravigneaux planet gear set (12) through the connection carrier to the outer ring of the freewheel F1 (29) and to the internally-toothed disc carrier of clutch K2 (28).
Brake band drum of brake band B2 (15), externally-toothed disc carrier of clutch K2 (28) and inner ring of freewheel F1 (29) to the sunwheel of the middle planet gear set (13).
Planet carrier of the middle planet gear set (13) and of the rear planet gear set (18) to the intermediate shaft (16).
Externally-toothed disc carrier of clutch KS (25) to the inner ring of the freewhell F2 (24) and to the sunwheel of the rear planet gear set (18).
Disc carrier of clutch KS (25) to the annulus of the rear planet gear set (18) and to the output shaft (20).