NOTE: This is what a special pipe nut wrench looks like.
According to the manufacturer's recommendation, it is recommended to replace the brake fluid at least once every 2 years or after 30 thousand km of mileage (whichever comes first).
The system is filled with special DOT-4 brake fluid.
USEFUL TIPS: Brake fluid is very hygroscopic (absorbs moisture from the air), that in addition to the appearance of corrosion of the brake system parts, it reduces the boiling point of the fluid itself, and this can lead to brake failure during frequent intensive braking. Therefore, we recommend replacing the brake fluid every year (in the spring). It is recommended to replace the brake fluid with an assistant, having previously installed the car on an inspection ditch or overpass (no need to remove wheels).
Use brake fluids that meet the class of at least DOT-4. The order of fluid replacement in brake mechanisms:
- right rear;
- left front;
- left rear;
- right front.
WARNINGS: Do not reuse drained fluid: it is contaminated, saturated with air and moisture. Always add new fluid to the system only with the same brand that was used previously.
Brake fluid is hygroscopic (absorbs moisture from the surrounding air), therefore, it cannot be stored in an open container. Protect the environment! Do not drain used brake fluid into the soil or sewer system.
1. Unscrew the cap of the master brake cylinder reservoir.
2. Add clean brake fluid to the reservoir up to the lower edge of the filler neck.
WARNING: Brake the vehicle with the parking brake and install the anti-rollback stops ("shoes") under the rear wheels.
3. Clean the air release valves from dirt and remove the protective caps of the valves of the working cylinders of the front brake mechanisms...
4. ...and rear wheels.
5. After this, place a rubber hose or transparent tube on the air bleed valve of the brake master cylinder of the right rear wheel and immerse the end of the hose in a clean transparent container.
6. The assistant should press the brake pedal sharply four to five times (with an interval between presses of 1-2 s), then keep the pedal pressed.
7. Loosen the air release valve by 1/2-3/4 of a turn. Old (dirty) brake fluid will start to flow out of the hose. At this time, the brake pedal should smoothly reach the stop. As soon as the fluid stops flowing, close the air release valve.
NOTE: Always monitor the fluid level in the reservoir, not allowing it to drop to the "MIN" mark on the reservoir wall. If necessary, add new brake fluid to prevent air from entering the hydraulic drive. This ensures that the old fluid is gradually replaced by the new one without draining the hydraulic system.
8. In the same way, replace the brake fluid in the working cylinder of the brake mechanism of the left front wheel.
9. Then replace the brake fluid in the second circuit (first in the working cylinder of the brake mechanism of the left rear wheel, then the right front).
10. Repeat steps 5-8 until the fluid in the drive is completely replaced (clean liquid without air bubbles should flow out of the hose).
11. After replacing the brake fluid, be sure to put the protective caps on the air release valves. Replace any damaged caps.
12. Check the quality of the work performed: press the brake pedal several times - the pedal travel and force on it should be the same with each press. If this is not the case, return to operations 5-8.
13. Add brake fluid to the level between the "MAX" and "MIN" marks on the tank wall and tighten the cap.
14. Install the parts in the reverse order of removal.
The original source of the article is the website «ChevyMan.ru»