Replacing the brake master cylinder reservoir
You will need a screwdriver.
1. Disconnect the wire from the negative terminal of the battery.
2. Disconnect the wiring harness connector from the brake fluid level sensor.
3. Unscrew the reservoir cap and pump out the brake fluid from it, for example, using a rubber bulb or a medical syringe.
4. Using a screwdriver, remove the tank, extracting its pipes from the connecting bushings.
5. Remove the connecting bushings from the cylinder body holes. Inspect the bushings and, if signs of rubber aging appear, replace them.
6. Install the parts in the reverse order of removal.
[You can find the original at this link www.renaultbook.ru]
Helpful Hint: To make installation of the reservoir easier, wet the connecting bushings with fresh brake fluid.
7. Fill with brake fluid and bleed air from the hydraulic drive (see "Bleeding the hydraulic brake system").