A/C compressor replaced by new design - BT83.55-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.

ENGINES 104, 119 in MODEL WDB140.### #A with CODE (581a) Air conditioning (Automatic)

A/C compressor 7SB16C

ENGINE 603.971 in MODEL WDB140.### #A as of 1.9.95 up to 31.5.96 with CODE (581a) Air conditioning (Automatic)

A/C compressor 7SB16C

ENGINE 606.961 in MODEL WDB140.### #A as of 1.6.96 with CODE (581a) Air conditioning (Automatic)

A/C compressor 7SB16C

The 7-stage A/C compressor 7SB16C fitted is a completely new development:

Function and operation corresponds to the predecessor 6CA17
Shorter and lighter in construction
Suction and pressure lines are individually flange-mounted
1-pin electrical connection
Pistons are moved directly by the swash plate (no conrods).

Fig 1: Identifying A/C Compressor New Design Parts Location

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Belt guard:

A safety fuse is located in the solenoid of the A/C compressor coupling which, due to heat generated by slipping poly-V belt, shuts off seized A/C compressor. The previously used slip detection via an rpm sensor in A/C compressor is discontinued, therefore the electrical connection now only has 1-pin.

If safety fuse becomes defective the A/C compressor is to be completely replaced, as this would suggest mechanical damage to the A/C compressor.