Vacuum unit for modulating pressure modified - BT27.10-P-0001-01A

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.

TRANSMISSION 722.3 /5 as of 15.8.92

Transmissions 722.3/722.5

Series Field Data/Changes/Innovations

Transmission/Steering Gear	Fill-Nr.	Trans.-End-Nr. From	Trans.-End-Nr. Until	Prod.-Period from	Prod.-Period until	Type and reason of the change	Reference/Remark
722.3				15.08.92
722.5				15.08.92

A modified vacuum unit has been installed on automatic transmissions 722.3/5 phased in as of 08/92.
The cap (60b) for the modulating pressure adjusting screw (60a) on this vacuum unit is made from plastic (previously rubber). With this cap the modulating pressure can be reduced by 0.2 bar.

Fig 1: Identifying Basic Setting And Modulating Pressure Reduced By 0.2 Bar
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
The pressure pin (59a) has also been modified with the introduction of the vacuum unit (60).

Fig 2: Identifying Pressure Pin, Vacuum Unit, Adjusting Screw And Cap
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.