The monovalve is your friend
9 times out of 10 when you have no heat (or heat all the time) it's the monovalve (if you have one). On a the 126 chassis you can just replace the diaphragm easily, quickly and inexpensively. Here's how.
Articles and repair/restoration information about Mercedes automobiles, funded in part when you buy Mercedes parts from mercedes.parts.mbz.org
This site has no affiliation with Mercedes Benz/Daimler Chrysler. All contents Copyright 2011 Richard J. Sexton
About
Articles
Plumbing
