Hi can someone help with information on how to dismantle this type of Auxiliary Air valve for a Mercedes part number e BOSCH 0280140027.
I have seen many videos of how to dismantle Auxiliary air valves but none are the same as mine. I don’t really want to damage it because it’s quite expensive to replace.

What model Mercedes?

Mine is a Mercedes w114 280ce 1973

Consider using a Nissan electrically heated AAV as a substitute.
Otherwise, very carefully drill & tap two holes in the pressed-in closing ring, so that screws may be used to extract the ring.

Thank you for your suggestions

part number or application? sounds interesting. thanks, chuck.

The most common application is for the 300ZX (early/mid '90s), although various versions have been used on ~2L. engines from 1984-on.

Some P/Ns: OEM / Interchange Numbers: 219416, 2266045P00, 22714, AC4410
22660xxxxx is the OE#.

Similar valves have also been used by BMW, Porsche, Fiat, VW, Audi, Triumph, etc.

ok, makes sense. been a lonnnng time since i had my head under a datsun/nissan hood. typical bosch aav. thanks, chuck.