2. It may be necessary to bleed all four brakes if air has entered the system due to a low fluid level, or if the brake lines have been disconnected from the master cylinder.
3. If the brake going to the wheel was disconnected, pump the brake of this wheel.
4. If the connection, brake pipe and flexible hose was disconnected, pump over this circuit of the brake system.
5. If the master cylinder has been removed from the vehicle, refer to Chapter 8 and bleed the cylinder on a workbench before installing it.
6. If the master cylinder is installed on the car without pre-bleeding, pump it first (paragraphs 7-16 below), and only then proceed to pumping the working brake cylinders and calipers.
7. Relieve the vacuum in the brake booster unit by applying the brake several times with the engine off.
8. Remove the master cylinder reservoir cap and fill the reservoirs with brake fluid. Reinstall the cover. Do not forget to monitor the liquid level in the reservoirs during pumping, do not empty the reservoirs, otherwise the pumping will have to be repeated.
9. Disconnect the front brake pipe from the master cylinder.
10. Allow brake fluid to fill the master cylinder port until it starts to flow from the front tube connection port. Have a container and rag ready to catch any spilled liquid.
11. Connect the front brake pipe to the master cylinder.
12. Have an assistant depress the brake pedal very slowly (just one time) and hold it down.
13. Loosen the connection between the front brake pipe and the master cylinder to allow air to escape from the cylinder. Tighten the connection, then have an assistant release the brake pedal slowly.
14. Wait 15 seconds (very important).
15. Repeat the steps, including a 5 second break, until all air has been removed from the connection hole.
16. Pump the back channel in the same way.
17. See points 7 and 8 before bleeding the working brake cylinders or calipers.
18. You will need brake fluid, an empty transparent container, a plastic or rubber tube that fits snugly on the bleeder fitting, a wrench, and the help of an assistant. The car will probably need to be jacked up and placed on axle stands.
19. Starting with the right rear wheel, slightly loosen the bleeder screw, then re-tighten it, but in such a way that it can be loosened quickly and easily.
20. Place the end of the tube on the fitting and immerse the other end in the brake fluid poured into the container.
21. Ask an assistant to press the brake pedal several times (to pressurize the system), then depress the pedal all the way down and hold it in that position.
22. When the pedal is pressed all the way, slightly open the fitting. Bubbles will come out of the end of the tube immersed in the container. When the fluid flow slows down (after 2-3 seconds), close the choke again and have an assistant release the pedal.
23. Repeat the steps described in steps 21 and 22 until the fluid coming out of the tube is free of air bubbles. Clamp the outlet valve and repeat the same procedures on the left rear wheel, then on the right front wheel, and finally on the left front wheel. Monitor the fluid level in the master cylinder reservoirs.
24. Never reuse old brake fluid because it has absorbed moisture from the outdoors, which will impair brake performance.
25. Finally, fill the master cylinder.
26. If you have any difficulty bleeding the system, purchase a pressure bleed kit. Connect the kit to the system according to the instructions and bleed the brakes in the above sequence.