Warning: When bleeding the system, you must protect your eyes with special goggles or a mask. If brake fluid gets into your eyes, rinse them with water and consult a doctor.
Note: Bleeding is necessary to remove air from the brake system that entered it when removing and installing the brake hose, metal tube, caliper, and master cylinder.
1. If air has entered the system as a result of a disconnected master cylinder line or an emergency drop in brake fluid level, all four brakes will likely need to be bled.
2. If the brake line was disconnected only from the wheel side, the caliper should be bled.
3. If the brake line was disconnected from the fitting located in the section of the system between the main cylinder and any of the brakes, only the circuit to which this line belongs should be bled.
4. Relieve the residual vacuum in the brake booster by pressing the pedal several times with the engine off.
5. Remove the cap and fill the master cylinder reservoir with brake fluid. Reinstall the cover.
Note: while bleeding the system, it is necessary to monitor the fluid level in the tank, not allowing it to drop to the bottom level, as this may cause air to be sucked into the main cylinder. Add liquid as needed.
6. Involve an assistant in the procedure and prepare a supply of new brake fluid, a clean transparent plastic container and a piece of plastic or rubber hose that can be attached to the bleeder fitting, as well as a wrench for opening and closing the fitting.
7. Starting the procedure on the right rear wheel, open the bleeder valve slightly, then close it so that it can be opened quickly and easily.
8. Place one end of the hose onto the bleeder fitting and immerse the other end in the brake fluid contained in a transparent container (see illustration).
8.8. When bleeding the brake system, one end of the hose is connected to the caliper bleeder fitting and the other is immersed in the brake fluid, which is contained in a transparent container. Air is detected as bubbles coming out of a hose immersed in liquid (All air must be removed before moving on to the next brake assembly)
9. Ask an assistant to press the brake pedal and hold it in this position.
10. When fixing the pedal in the depressed position, open the fitting so that a small flow of liquid can pass through the valve. Observe the presence of air bubbles coming out of the end of the hose immersed in the brake fluid. After reducing the fluid flow, after a few seconds, tighten the fitting and ask the assistant to release the brake pedal.
11. Perform the operations described in paragraphs 9 and 10 until fluid that does not contain air bubbles comes out of the hose, then tighten the fitting and continue bleeding the system on the left rear, right front and left front brake in the order indicated and in accordance with the procedure described above Remember to periodically check the fluid level in the master cylinder reservoir
12. Do not pour old brake fluid into the system, since, due to its hygroscopicity, it is saturated with moisture from the air, which can lead to its boiling and, as a result, to loss of performance of the brake system.
13. After completing the procedure, fill the master cylinder reservoir with fluid.
14. Check the operation of the brake system. The brake pedal should move elastically, covering the entire stroke length without dips. If necessary, repeat the brake system bleeding procedure.
15. Before driving onto the roadway, you must do the following while in the driver’s seat.
- A) Take your foot off the brake pedal.
- b) Start the engine and keep it running for at least 10 seconds. Observe the ABS warning light located on the instrument panel.
- With) If the indicator does not turn off within 10 seconds after turning on, have the vehicle towed to an authorized or qualified dealer. To diagnose the ABS system, you need to use a scanner.
- d) If the indicator turns off after approximately 3 seconds, turn off the ignition.
- e) Once again follow the recommendations given in paragraphs a-d. If at the same time the ABS indicator, which has an amber color, is switched off, conduct a test drive outside the roadway, and only after that proceed to normal operation of the vehicle.
Warning: do not operate a vehicle whose brake system is in questionable technical condition.