Checking the operation of the brake booster check valve (Renault Fluence 1)

Perform the check on the check valve installed in the vacuum hose.

Remove the brake booster vacuum hose.

Note: The check valve is installed with tension in the vacuum hose according to the installation marks.

Check the operation of the check valve using a vacuum pump.

Caution: If the check valve is faulty, replace it together with the vacuum hose.

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