Engine Air Injection Pump

[mercS600]

Does anyone know how to service these - ie fill the oil up etc as mine is getting quite noisy and my fathers 320E makes a right old racket!
The 600's done 128k and on an s320 I had it was as quiet as a mouse!
Any ideas anyone?[8)]

[benzboyz]

Normally the bearing pulley makes the noise when its wornout, you can replace this parts. all you have to do is remove the airpump and replace the damaged pulley.

[Brett San Diego]

You can buy just the pulley from the MB dealer parts counter. I checked it out when my air pump pulley locked up, and they wanted over US$500 for just the pulley. Ridiculous. (My car is a 1997 S600 sedan.) I passed and bought an entire rebuilt pump with pulley and clutch for almost US$500. (That may be ridiculous, too, but I paid it.)

Brett

[Blitzenbenz]

My 600S coupe, this emission part was not covered under the aftermarket warranty. The dealer is quoting USD $1800.00 to replace. What say you all?

[Nimrodthewombat]

Go to an independent mechanic and have him put on a rebuilt one