Bleeding brakes — using a one-way valve kit (VW Golf 4)

The kit consists of a tube with a one-way valve installed on it, which eliminates the possibility of returning the removed brake fluid with air bubbles to the brake system. Some kits are equipped with a transparent container, in which air bubbles in the brake fluid are clearly visible.

Execution order

1. Remove the dust cap from the wheel cylinder bleeder nipple, clean it and attach the hose from the kit to it.

2. Unscrew the bleed screw half a turn.

3. Smoothly press the brake pedal all the way down and slowly release it to its original position.

4. Repeat this operation until brake fluid without air bubbles comes out of the bleed nipple.

5. Tighten the bleed nipple until it stops, remove the tube from it and put on the dust cap.

Warning: When bleeding the brake fluid, always monitor the reservoir to ensure that there is no fluid left in the reservoir, and do not allow the reservoir bottom to become exposed, as this will allow air to enter the system again.