Checking the operation of the vacuum booster check valve (VAZ-2115)

1. Check the tightness of the connection of the vacuum hose with the fitting on the receiver…



2. …and with a check valve.



3. To check the check valve, loosen the clamp and disconnect the vacuum hose from the valve. Remove the valve from the booster housing.



4. Place a rubber bulb on the nipple installed in the vacuum booster and squeeze it - air should come out through the valve.





5. Release the pear; if it remains compressed, the valve is OK. Otherwise, replace the valve. If you don't have a bulb, you can blow through the valve with your mouth.