WM, 477601 Checking Vacuum Pump: Information
WARNING: This page is about a different car, the 2014 Porsche Cayenne, 2013 Porsche Cayenne, 2012 Porsche Cayenne, and 2011 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.
Information
The vacuum pump creates the necessary vacuum for the following components and functions:
- The variable intake system on naturally aspirated engines (secondary load).
- Sports flap exhaust system (secondary load).
- The tank leakage test on US vehicles (secondary load).
- Wastegate control on turbo vehicles (secondary load).
- Brake booster (main load - large connection)
Defects in the specified systems can be caused by a defective vacuum pump. To avoid replacing components based on suspected defects and repeat repairs, the function of the vacuum pump must be checked.
The vacuum pump -1- is fitted at the rear of the right cylinder head on V-engines.
Vacuum pump (mechanical)
Vacuum pump with connections
| 1 | Vacuum pump |
| 2 | Screw, M6 x 25 |
| 3 | Sealing ring |
| 4 | Sealing ring |
| 5 | Secondary load connection |