Removal and installation the one-way valve of the vacuum booster (BMW 7 Series E38)

1. Depress the brake pedal several times to reduce the vacuum in the brake booster and thereby make it easier to disconnect the vacuum hose.



2. Remove the clamps (1 and 2) and disconnect the vacuum hoses.

Use new clamps when installing.

3. Remove the rubber seal from the wall where the one-way valve is attached.



4. Release the 4 fasteners and pull out the upper part of the valve holder.

When installing, make sure that the brackets are securely fastened.

5. Remove the check valve (1) with the rubber gasket (2) from the bottom of its holder.

6. Installation is carried out in reverse order.