Originally Posted by DCM

The heater is no longer working on my 1980 300sd again. AC seems OK. My mechanic said it is too expensive to rebuild this system but I was thinking that it might just need a servo (read this among postings found in a search of this site).

My thought is to go to the junk yard and try to find an aluminum servo and take it to the mechanic. Trouble is that I don't know what one looks like or where it is located on the car. Also would not know how to determine if the one I find (if any) is in good operating condition.

Does this sound like something that would be worthwhile.

A manual system would be an excellent alternative for me because the manual system on my 240d never fails but I would have no idea how to set this up or where to find a kit if such a thing is available. Is there a kit available to do this conversion?

Thanks