1. Use a long (1.5 m) piece of see-through tube (inner diameter = snug fit to bleed valve) and attach it to the bleeding valve.
2. Suck (using your mouth) until you have under-pressure in the tube.
3. Open the bleed valve.
4. Keep an eye on the brake fluid level in the reservoir and the fluid level in the tube.
5. Whilst still sucking, close the bleed valve; a) when you cannot see any more air-bubbles in the tube, b) when the level is to low in the reservoir and c) before you are throwing up brake fluid.
Don?t open the bleed valve too much. Open it just enough so you can suck out the oil / air and close it quick.
You could also use the ?conventional? way to bleed your brake fluid. I recommend you still use a see-through tube though. It?s easier to spot air-bubbles and changes in the colour of the brake fluid.
1. Pump up pressure in the system and keep it pressurised
2. Whilst under pressure, open the bleed valve (not too much)
3. Whilst still under pressure, close the bleed valve.
4. Redo from point 1.
The reason for point 3 is that when you release the brake pedal or handle, the system will not only release the pressure but also suck air back into the system through the bleed valve - unless it?s closed.
I always do the tube exercise and finish of with a couple of conventional cycles. That way you can test how the brakes feel. If it?s mushy you probably still have air in the system.
//John
