What do the screws do?
Doc, I recently replaced the same two hoses on my 560. Old ones were rock hard and cracked. Each one has a phillips head screw, seems to be an air-flow adjustment of some kind. Can you shed any light on how these are supposed to behave? Thanks.
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)