In some car systems, for their full functioning, it is necessary to create a vacuum. To solve this problem, an automobile MEAT & DORIA brand Vacuum Pump, brake system is used, located in most cases behind the engine. The system also has a vacuum reservoir located just behind the bumper. Air is pumped out of it, which can be used to cool some parts of the power unit. Finding a pump is not difficult because it has a specific shape.

1. A6 (4B2, C5)
2. A6 Saloon (4B2, C5)
3. A6 / S6 (4B2, C5)
4. A6 Avant (4B5, C5)
5. A6 / S6 Avant (4B5, C5)
6. A6 (4F2, C6)
7. A6 Saloon (4F2, C6)
8. A6 / S6 (4F2, C6)
9. A4 (8EC, B7)
10. A4 Saloon (8EC, B7)
11. A4 / S4 (8EC, B7)
12. A4 Avant (8ED, B7)
13. A4 / S4 Avant (8ED, B7)
14. A6 Avant (4F5, C6)
15. A8 (4E2, 4E8)
16. A8 Saloon (4E2, 4E8)
17. A8 / S8 (4E2, 4E8)
18. A8L (4E2, 4E8)
19. A4 Convertible (8H7, B6, 8HE, B7)
20. A4 / S4 Convertible (8H7, B6, 8HE, B7)
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The functionality of the brake system vacuum pump

This unit is used to create a vacuum in the brake system, heating and ventilation. Together with air, an automobile vacuum pump sucks out various vapors, which in closed sealed systems reduce pressure and impair their work. Therefore, the first sign of malfunctioning is the need to apply more force when pressing the brake pedal. You should also pay attention to this unit if a hissing sound appears or the heater control does not work. If these are signs of a failed or incorrectly working pump, then it must be replaced. This is due to the fact that it is not repairable.