Which method can be used to bleed brakes?

Using a pressure pot attached to the bleeder valve is an effective method for bleeding brakes because it allows for controlled application of hydraulic fluid into the brake system while simultaneously forcing air out. When the pressure pot is connected, the hydraulic fluid is pushed through the system, displacing any trapped air at the highest point in the brake lines, which is typically where the bleeder valve is located. This method is often preferred because it minimizes the risk of introducing more air into the system and can lead to a quicker and more efficient brake bleeding process.

In contrast, other methods may not provide the same level of effectiveness. Utilizing a vacuum pump, for example, can help to draw fluid through the system, but it may not always remove all the air, particularly if there are air bubbles that are resistant to being sucked out. Manually shaking the brakes is not a standardized or effective technique for bleeding air out of the brake lines, as it does not apply significant pressure or suction to remove air. Increasing air pressure in the system is likely to result in more air being introduced or compressed, which is counterproductive when trying to achieve a solid brake feel. Thus, using a pressure pot is the most reliable and effective method for this task.