Note
The check valve is installed directly in front of the vacuum pump.
Note
Check Valve, Removing and Installing
Note
Removing
Audi Q3:
- Open the clamp on the vacuum hose using suitable pliers.
- Remove the vacuum hose from the Brake System Vacuum Pump -V192-.
Caution
Be careful not to damage the vacuum hose. Replace the vacuum hose if damaged.
Audi RS Q3:
- Remove the air filter housing, refer to → Engine Mechanical, Fuel Injection and Ignition; Rep. Gr.24; Air Filter; Air Filter Housing, Removing and Installing.

- Disconnect the connector -1-.
- Remove the vacuum hose from the brake booster -arrow-.

- Remove the vacuum hose -2-.
- Free up the vacuum hose -1--arrow-, pull it out of the brake booster vacuum pump and remove it.
Caution
Be careful not to damage the vacuum hose. Replace the vacuum hose if damaged.
Installing
Note
Coat the check valve and the vacuum hose lightly with some water, not oil, to make them easier to install.
- Slide the new clamp over the vacuum hose.

Vacuum Sensor -G608-, Removing and Installing
Vacuum Pump, Removing and Installing
Brake Lines
Repair a wiring 0.35 mm 2 or greater with
intermediate wire section
Locking Mechanism Trim, Removing and Installing