quote:Originally posted by Bosswrench:
Inside the evaporator valve is a sliding plug and a spring; the spring may be different strength than in an OEM valve for R-12. And of course the tiny conical screen filter in the side-leg is usually removed from r-134a installations. That screen catches a lot of powdered debris from ancient dryer cannisters, so maybe with R 134a one should change dryers every so often? Or put the screen back in and see how it affects coolness?
Does anybody have any photos of the tiny conical screen filter and its location?