14.2. BLEEDING THE BRAKE SYSTEM

The brake fluid must be pumped completely through the pipes. There are three venting nipples on the car. By the two rear brakes, (one for each break), and by the left calliper.

- Place a transparent tube on the venting nipple of the right rear wheel and let the other side of this hose run into a transparent jam jar, or something similar.
- Make sure you have enough brake fluid in the reservoir on the master cylinder. Remember the type of the liquid. If it’s necessary, refill from time to time.
- Have an assistant press the brake pedal several times so that enough pressure is built.
- Loosen the brake venting nipple until the brake pedal ‘sinks’ and turn back the nipple while your assistant keeps pressing the brake pedal.
- If the nipple is turned off, the pedal can quietly rise again.
- Repeat this procedure until there are no air bubbles in the fluid coming out the hose.
Ventilate in the following order:
- The other rear wheel
- The left calliper in the front.

By the disc brakes, both brakes are ventilated with a nipple on the left calliper.  In a well vented brake circuit the pedal feels ‘hard’ if you press strongly on it.
- When you are finished venting, the brake fluid reservoir must be on the MAX position after refilling.

NB Venting by a Burton cannot be done with a vacuum pump because the pipes are too thin for this.

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