Change the brake fluid for each branch of the hydraulic circuit in the following order:
- front left wheel;
- front right wheel;
- rear left wheel;
- rear right wheel.
Attention! Brake fluid is hygroscopic (absorbs moisture from the air), therefore, liquid stored for a long time in an open container is not recommended. Use only fresh DOT 4 brake fluid.
To change brake fluid:
- remove the cap from the compensation tank with brake fluid;
- partially pump out the brake fluid from the reservoir with a syringe;
- fill the reservoir with fresh brake fluid to prevent air from entering the brake system from the reservoir. Make sure that the level of the brake fluid in the reservoir is not below the mark «Min» during the procedure;
- remove the dust cap from the front left caliper bleeder, clean it and put one end of a clean transparent hose on it, lower its other end into a container partially filled with brake fluid. The container must be at least 300 mm above the bleed valve. This prevents air from entering the caliper through the threads of the bleeder fitting;
- sharply press the brake pedal 3-5 times with an interval of 2-3 s, unscrew the bleed valve half a turn with the pedal depressed. While continuing to press the pedal, force the old brake fluid in the circuit through the hose into a container. Once the pedal has reached its full forward position and fluid has stopped flowing through the hose, screw the bleeder in until it stops. Release the brake pedal so that it returns to its original position;
- repeat these operations until fresh brake fluid comes out of the bleeder valve;
- while holding the pedal depressed, screw the bleeder in until it stops and remove the hose;
- wipe the bleeder valve and install the protective cap;
Attention! When changing the brake fluid, be sure to maintain the correct level of brake fluid in the reservoir.
- repeat these operations for the hydraulic circuits of the other wheels.