I think that the servo was mechanically by-passed but not physically (second new re-maned servo from German Star in 2 1/2 years) . The auxillary pump is not hooked up. The heater hose that runs along the fire wall has a valve in the middle. Open for heat, closed for AC. This valve used for the by-pass is alright, still a little heat will come out sometimes when I first start her up for just a few seconds and then just cold air! Blower works great new MB part 2 years old. Heat only works on defrost which I understand means a vacuum problem within the system?

__________________
Thanks,
T.C.
1979 300D non-turbo silver