When disassembling the hydraulic drive of one wheel, you can limit yourself to pumping only the disassembled circuit.
Press the brake pedal several times and remove the residual vacuum in the amplifier.
Before pumping, restore the fluid level in the tank and maintain the level during pumping, preventing the tank from emptying. Fill with fresh fluid only.
1. Start pumping from the rear right wheel. Attach a hose to the fitting, lower the other end of the hose into a vessel with brake fluid.
2. Ask an assistant to slowly depress the brake pedal and hold.
3. Unscrew the fitting and after 2 seconds after the flow of liquid flowing out with bubbles weakens, tighten the fitting. Have an assistant release the pedal.
4. Repeat the procedure until bubbles are no longer observed in the outflowing liquid. Tighten the fitting.
5. Perform these steps in sequence: left rear wheel, right front wheel, left front wheel, pressure regulator. When finished, restore the fluid level in the tank.
6. Check pedal stiffness and brake operation.
Attention! If the pedal "soft", then repeat the download. If air cannot be purged, air may have entered the ABS valves. So if the pedal "soft" after re-priming and the BRAKE or ANTI-LOCK lamps are on, then tow the car to a car service for checking with a scanner.