928 vacuum actuator diaphrams
#16
Advanced
Waiting on my replacement centre and footwell diaphragms, along with a hot/cold metal water valve. Already know what it’s like to be a contortionist getting that damn recirc flap actuator out! Replaced what sponge seals I could get at seeing as these were turning to powder (involved cutting off the plastic grille carefully and then gluing back into place). Also check the solenoids are holding vacuum as well. Be great to see how well the system really works after replacing the compressor, seals, receiver etc with R134a after the system was degassed by the PO with using cooled air from the cabin instead of outside air.