2. Inspect all brake pipe fittings and hose connections for signs of leakage. Remove the cap from the brake reservoir and check the brake fluid level. Check that the vent hole in the plug is not clogged.
3. Take measures to ensure that brake fluid does not get on painted surfaces, because. it wears off paint very quickly.
4. You will need a supply of fresh brake fluid stored in a sealed container, a clean glass jar and a rubber or plastic tube that fits easily over the bleed valve, and a wrench to work with the bleed screws. There are special devices that allow you to bleed the brakes yourself, but the easiest and most reliable way is to work together with an assistant who, if necessary, will press the brake pedal. In the process of pumping, it is necessary to constantly monitor the level of fluid in the brake reservoir. If it drops too low, air will enter the system, making all the work useless. Fluid flowing out of the system during the pumping process cannot be reused.
5. Before starting pumping, press the brake pedal several times to dissipate the residual vacuum in the brake booster. Thoroughly clean all bleed screws and pour brake fluid into a can so that its layer height is approximately 25 mm.
6. Start with the rear left brake. Put the tube on the drain nipple and lower the other end into the jar so that it is covered with liquid (make sure that this end of the tube is constantly immersed in the liquid during pumping). Loosen the bleeder screw about half a turn and have an assistant fully depress the brake pedal and then allow it to rise to its highest position. Wait a few seconds and repeat this operation again. In order to prevent liquid from the can from flowing back into the system, it is recommended to close the bleed screw before the pedal is released, and open it again at the moment it is depressed. If you are going to bleed the entire system, just do 3-4 full pumps on each wheel and then repeat the whole process. After every 3-4 strokes, add fresh brake fluid to the brake reservoir (the old one can't be used). After the liquid in the tube no longer contains air bubbles, tighten the bleed screw, release the pedal and install the boot on the screw.
7. Continue pumping until all 4 brakes are free of air. Check the system by pressing the brake pedal: it should have a certain resistance to pressing, give in evenly under the foot and in no case fall through. If it fails, then the master cylinder seals are most likely leaking (replace seals) or master cylinder (this may be if there are scratches on the inner walls of the master cylinder).
8. Take a test drive to check the operation of the brakes.