- Disconnect the electrical connector from the brake fluid level switch.
- Unscrew both brake hoses from the cylinder. Close the ends of the hoses.
- Unscrew the brake master cylinder from the front side of the brake booster and carefully remove the cylinder without dripping brake fluid onto the painted surfaces.
- Remove the gasket from the hydraulic booster.
Installation of the brake cylinder is carried out in the reverse order. Adjust the free play of the brake pedal (Chapter 15.1.1) and also check out Chapter 15.7, which describes how to adjust the brake booster. After installation, remove air from the brake system (chapter 15.6).