Check Valve, Checking
WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
-- Remove the check valve. Refer to CHECK VALVE, REMOVING AND INSTALLING .
- The valve must allow air to flow through in the direction of the vacuum pump.
- Valve must remain closed in the direction of the brake booster.
-- Install the check valve. Refer to CHECK VALVE, REMOVING AND INSTALLING .
TIP:
Note the flow direction: the arrow symbol faces the vacuum pump.