Use only fresh DOT 3 or DOT 4 brake fluid.
Bleeding (bleeding) the hydraulic drive of the service brake system is necessary to remove air that significantly reduces braking efficiency. Air can get into the hydraulic drive due to depressurization of the system during repairs, replacement of individual units or brake fluid. The presence of air in the drive is indicated by an increased brake pedal travel and its "softness". Before bleeding air, check the tightness of all brake drive units and their connections.
During the process of bleeding the brake system, the brake fluid level should not fall below the middle of the hydraulic reservoir of the working brake system.
Pumping is performed with an assistant.
Bleed the brakes in the following sequence:
- 1 - rear right brake working cylinder;
- 2 - rear left brake slave cylinder;
- 3 - Front right brake caliper;
- 4 - front left brake caliper.
Raise the car.
Remove the dust cap from the bleed nipple, clean it, put one end of a clean transparent hose on it, and lower the other end into a container partially filled with brake fluid.
Press the brake pedal sharply 3-5 times with an interval of 2-3 seconds, and with the brake pedal pressed, unscrew the bleed nipple by half a turn. Continuing to press the pedal, force out the fluid in the system together with the air through the hose into the container. After the pedal reaches the extreme forward position and the fluid stops flowing out through the hose, screw the bleed nipple all the way in. Repeat these operations until air stops flowing out of the hose.
While holding the pedal down, tighten the bleed nipple until it stops and remove the hose from the bleed nipple.
Wipe the bleed nipple clean and install the protective cap.
Repeat these operations for the remaining wheels.
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