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.
Advice. «old» brake fluid is often much darker than fresh so they can be easily distinguished.
1. The procedure is the same as the procedure for bleeding the brake fluid described in Chapter 9, with the only exception that the brake fluid reservoir must first be emptied with a clean rubber bulb or similar device and the old fluid must be bled while bleeding 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.
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 brake fluid reservoir should always be maintained above the MIN·mark. Otherwise, air may enter the system, which will significantly increase the complexity of the procedure.
5. At the end of the procedure, check the liquid level in the tank again, tighten all the air bleed screws and install the dust caps on them.
6. Before driving on the road, thoroughly wash off all traces of spilled fluid and check the operation of the brakes.