Removal and installation brake pressure regulators on hatchback and sedan vehicles (Opel Kadett E)

Removal

Crush the cap off the brake master cylinder reservoir and screw on a sealed plug in its place.

Disconnect the pipes from both pressure regulators.

Unscrew the pressure regulators from the master brake cylinder.

Installation

Make sure that the same pressure value is marked on the body of both pressure regulators.

Screw the pressure regulators into the master cylinder.

Connect the pipelines to the pressure regulators.

(Text was copied from the portal opelbook)

Remove the sealed plug from the master brake cylinder reservoir and install the standard plug.

Remove air from the brake system and check its tightness.