1. Before removing air from the brake system, make sure that all brake drive units and their connections are tight, check and, if necessary, fill the tank to a normal level with liquid «Neva».
2. Then carefully clean the bleeder fittings from dirt and dust and remove the protective caps from them.
3. Air is removed first from one circuit, then from another, starting each time with the wheel furthest from the master cylinder. Perform the hydraulic drive bleeding in the following order.
4. Having removed the front wheels, put a rubber hose 1 on the fitting head, and lower the other end of the hose into a transparent vessel 2, partially filled with liquid.
5. Having sharply pressed the brake pedal 3-5 times, with intervals between pressing 2-3 s, unscrew the fitting by 1/2-3/4 turn with the pedal pressed.
6. Continuing to press the pedal, force the liquid in the system together with air through the hose into the vessel.
7. After the brake pedal has reached its full forward position and fluid has stopped flowing through the hose, tighten the air outlet fitting until it stops. These operations must be repeated until bubbles exit the hose.
8. While holding the pedal down, tighten the air outlet fitting until it stops and remove the hose.
9. Wipe dry the fitting and put on the protective cap.
10. Repeat the operations for other wheels, first on the second wheel of the same circuit, and then sequentially on both wheels of the second circuit.
11. When removing air, maintain a normal fluid level in the brake fluid reservoir.
12. If there is no air in the brake drive, the brake pedal should not travel more than 1/2–2/3 of its travel.
13. To eliminate the influence of the pressure regulator on the pumping of the brake drive, carry out the removal of air with the rear wheels loaded (hanging the rear of the car is not allowed).
14. If the brake fluid was completely drained from the system, then before removing air from the system, unscrew the air bleed fittings on the cylinders of all wheels by 1.5–2 turns. Pressing the brake pedal sharply and releasing it slowly, tighten the fittings as fluid flows out of them. Then bleed the drive as above.
15. If, even after prolonged removal, air continues to exit the hose in the form of bubbles, then it enters the system through damage in the pipelines due to insufficient tightness of the connection or due to a malfunction of the master or wheel cylinders.
16. If bleeding is performed on a vehicle whose brake system has worked for a long time, then replace the fluid in the system with a new one.
17. Liquid suitable for further use must be carefully filtered and then settled in a hermetically sealed vessel.