- overhead wrench 9 mm for unscrewing the fitting for bleeding the hydraulic drive of the brake mechanism,
- transparent hose,
- container for collecting brake fluid.
Necessary materials:
- approximately 0.5 liters of DOT 4 brake fluid.
Brake fluid absorbs moisture from the air through the pores in the brake hoses. This leads to a decrease in the boiling point of the brake fluid over time. With a heavy load on the brakes in such cases, vapor locks can form in the pipelines, which significantly impairs the functioning of the brake system.
Brake fluid should be changed every 2 years, preferably in the spring. When driving frequently in mountainous terrain, the brake fluid should be changed at shorter intervals.
1. Take the brake fluid out of the reservoir, leaving a layer of fluid about 10 mm thick in it.
Attention! Do not empty the reservoir completely so that air does not get into the brake system. Otherwise, bleeding the brake system and bleeding will have to be done in the workshop. This is especially true for vehicles with ABS.
2. Fill the reservoir with fresh brake fluid up to the mark «MAX».
3. Remove a dustproof cap from the union of prorolling on the brake mechanism of the right back wheel. Clean the fitting, put on it a suitable clean and fairly transparent hose, the other end of which is lowered into a container half filled with brake fluid (see illustration).
4. Ask an assistant to squeeze the brake pedal several times until resistance appears. While holding the brake pedal down, unscrew the right rear brake bleeder with a crimp wrench and allow the brake fluid to drain.
5. Screw in the fitting when the brake pedal reaches the front end position and rests on the floor, and release the pedal.
Attention! When removing air, constantly monitor the amount of liquid in the expansion tank and replenish it. Do not expose the bottom of the tank, otherwise air will again enter the brake system.
In a similar way, remove the old brake fluid from the remaining calipers, strictly following the specified procedure for bleeding the hydraulic drive.
Pumping order:
1 - brake mechanism of the rear right wheel,
2 - brake mechanism of the rear left wheel,
3 - brake mechanism of the front right wheel.
4 - brake mechanism of the front left wheel.
Attention! The escaping brake fluid must be clear and without air bubbles.
6. Fill the brake reservoir up to the mark «MAX».
7. Remove air from the hydraulic clutch.
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