Installation of overdrive brake piston and multidiscs for overdrive brake - AR27.50-P-0740-03A

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.

Before installing the thrust washer (173) ensure that the lubricating nozzle (arrow) is installed in the transmission housing.

Fig 1: Locating Lubricating Nozzle

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Lubricate both O-rings of the overdrive brake piston (192) with ATF oil
Press piston into the housing.
Insert thrust washer (173) so that the lug for the anti-rotation device is located in the housing.
Insert Teflon rings (196).

Press into the groove until the joint meets

Fig 2: Identifying Overdrive Brake Piston, Thrust Washer And Teflon Rings
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Insert cam spring (191).
Install locking ring (190).

Do not mix up locking ring (190) as this has a bevelled joint
Insert damping spring (195).
Arrange multi-discs for the overdrive brake and insert individually.

Fig 3: Identifying Cam Spring, Locking Ring And Damping Spring
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Carefully insert overdrive clutch multi-disc carrier (172) in the overdrive brake multi-discs

The multi-disc carrier is correctly assembled when it fits tightly against the thrust ring after being lifted up gently.

Fig 4: Identifying Overdrive Clutch Multi-Disc Carrier
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.