Home >> Porsche >> 2012 >> Cayenne Turbo >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> 47 - Brakes- Brake Hydraulic System, Regulator, Booster (4.8L Turbo) -- 92A - Cayenne (92A) >> WM, 477619 Removing And Installing Vacuum Pump >> Removing And Installing Vacuum Pump >> Preliminary Work