Removing and installing overflow tank - AR20.30-P-4540AP

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.

ENGINE 120 in MODEL 140

Fig 1: Identifying Overflow Tank Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Removing, installing
1	Drive car onto lift platform or over inspection pit
2	Remove front engine compartment panel (2) at bottom
3	Remove front bumper (3)
4	Detach overflow line (6) from overflow tank (1)
5	Unscrew nuts (arrows)
6	Remove overflow tank (1)	When removing the overflow tank (1), protective cap (3) of air admission connection (5) remains positioned next to windshield washer fluid reservoir (4). The protective cap should be fitted on again when installing. The overflow tank is discontinued with introduction of the 2-stage cap, see ↓ Function of 2-stage cooling system cap	GF20.30-P-1000A
7	Install in the reverse order