Removing Vacuum Pump

Disconnect vacuum line and electric line.
1. 1.1. Release plug-in coupling -1- at the vacuum line and pull it off the vacuum pipe.
2. 1.2. Remove vacuum line and electric line from the clip holder -2- .
  
  Fig 1: Identifying Vacuum Line
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen screw -1- and pull the vacuum pipe -2- off the vacuum pump.

Fig 2: Identifying Vacuum Pipe
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Information

When you loosen the fastening screws, engine oil will run out of the vacuum pump. Place a suitable container underneath to collect the emerging engine oil. The engine-oil level must be checked and topped up afterwards (following installation).
Unscrew external Torx screws -4- and remove the vacuum pump -1- .
Make sure not to loosen the internal Torx screws .

Fig 3: Identifying Vacuum Pump
Courtesy of PORSCHE CARS NORTH AMERICA, INC.