To perform the work, you will need an assistant, as well as a special key by 10 mm for brake pipes, a transparent vinyl pipe of a suitable diameter, a container for draining the brake fluid and fresh brake fluid (see "Operating fluids").
Execution sequence
1. We prepare the car for operations (see "Vehicle preparation for maintenance and repair").
2. Remove the cover of the reservoir of the hydraulic drive of the brakes and, if the level is insufficient, add brake fluid to the reservoir to the mark "MAX".
3. Remove the front right wheel (see "Wheel - replacement") and remove the protective rubber cap from the fitting of the working cylinder.
4. We put a rubber hose on the bleeder valve and immerse its free end in a container partially filled with brake fluid. Pour the liquid into a container so that during pumping, air bubbles coming out of the rubber hose are visible. When using a transparent hose, there is no need to pre-fill the container with brake fluid, since the movement of air bubbles in the hose can be visually assessed.
5. The assistant presses the brake pedal 3-5 times and keeps it pressed.
6. Key by 8 mm (10 mm on early production cars) Loosen the bleed screw 3/4 turn.
In this case, the pedal begins to move, displacing the brake fluid through the hose.
7. After the pedal has moved all the way, we wrap the fitting, after which the assistant releases the pedal.
Attention! When pumping the hydraulic drive of the brakes, it is necessary to periodically check the fluid level in the reservoir and, if necessary, add it.
8. Repeat the pumping operations until air bubbles disappear from the brake fluid coming out of the hose.
9. Remove the hose and put a protective cap on the bleeder fitting.
10. Install the previously removed wheel.
11. Similarly, we pump the brake mechanism of the left front wheel and close the cover of the reservoir of the hydraulic drive of the brake system.
12. The rear circuit of the hydraulic drive of the brake system is pumped in the same way as the front, starting from the right side of the car.
13. To replace the brake fluid with a rubber bulb, we select the used brake fluid from the reservoir and fill it with fresh one. We pump the front and rear circuits of the hydraulic drive until fresh oil comes out of the fittings of the working cylinders (lighter and more transparent) brake fluid.