Vacuum connections at valve block modified - BT83.10-P-0001-01S

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.

MODEL 123445 up to 30.4.93 with CODE (581a) Air conditioning (automatic)

WDB140.### #A up to

The vacuum connections on the valve block (Y11) for the two diverter flap vacuum elements have been eliminated.

The side nozzle diverter flaps therefore no longer have any function, i.e. the air always flows through the evaporator and the heater core to the side nozzles.

Fig 1: Identifying Vacuum Connections Of Valve Block Modified

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The two vacuum elements for the left and right side nozzle (39) diverter flaps have been eliminated without replacement. For a short time A/C housings were installed on which the openings for the vacuum elements are closed with covers (10).

Fig 2: Identifying Right Side Nozzle And Covers

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Vacuum Elements

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.