Attention! Brake fluid can be harmful to the eyes and damage body paintwork. Therefore, when handling it, in particular when refueling it, be extremely careful. Do not use fluid from a container that has been left open for some time as brake fluid is highly hygroscopic (ability to absorb moisture from the air). Excess moisture can lead to a dangerous loss of braking performance.
1. The procedure is the same as the procedure for bleeding the hydraulic brakes described in chapter 9, with the only exception being that the brake fluid reservoir must first be emptied with a clean rubber bulb or similar device and the old fluid removed while venting part of the circuit.
2. Working as described in chapter 9, open the first bleed screw in turn and gently operate the brake pedal until almost all «old» fluid will not come out of the brake fluid reservoir.
Advice. «old» brake fluid is often much darker than fresh. Therefore, it can be easily recognized.
3. Fill with new fluid to the MAX mark and continue pedaling until only new fluid remains in the reservoir and new fluid flows out through the air release screw. Tighten the screw and top up the tank to the MAX mark.
4. Repeat all the steps for the rest of the bleed screws one by one, ensuring that the new fluid goes through all the screws. Be careful - the fluid level in the reservoir of the hydraulic drive of the brakes should be constantly maintained above the MIN·mark. Otherwise, air may enter the system, which will significantly increase the complexity of the procedure.
5. When finished, securely tighten all bleed screws and replace dust caps. Wash off all traces of spilled fluid and recheck the fluid level in the brake fluid reservoir.
6. Before leaving on the road, carefully check the operation of the brakes.