1987 300tdt vacuum question
 

Greetings New member question,
I have just replaced the Vacuum pods under the dash and have a
large diameter Black vacuum line in the location of the steering wheel that I did not knowingly unhook. Where do I connect it? The other end of it
appears to start at the vacuum filter under the air filter.
P.S. I have very much enjoyed reading the posts they have helped me immeasurably.
Thanks Ken

See if any of these help
 

Mercedes Benz Club of Russia's Illustrated Electronic Parts Catalog

http://www.detali.ru/cat/oem_mb1.asp?TP=1&F=124193_506&M=603.960&GA=722.317357&CT=F&Cat=506&SID=80

Use the lower information marked BM.

Question answerd by Jeremy5848
 

Jeremy 5848 anserd with an explanation that the vacuum line in question is a vent line ment to access cleaner air under dash than under hood.
Thanks Ken
p.s. I also appreciated the vacuum diagrams from Russia