ELI5: Explain Like I'm 5

Brake bleeding

Alright kiddo, let's talk about brake bleeding. You know how when you press the brake pedal in a car, it slows down or stops the car, right? Well, the brakes need a special fluid called brake fluid to work properly.

Sometimes air gets trapped in the brake lines which makes it hard for the brakes to work. Bleeding the brakes is when we remove that air from the brake lines.

To do that, we first have to find the little valve that's at the end of the brake line called the brake bleeder valve. Grown-ups use a special tool called a wrench to open and close this valve. Then, they attach a plastic tube to the bleeder valve and the other end of the tube goes into a jar.

Once the tube is securely attached, they ask someone to sit in the driver's seat and press the brake pedal. This squeezes out some brake fluid and the air that's trapped in the brake lines. When the brake pedal reaches the floor, the grown-up tells the person in the driver's seat to let go of the pedal. Then, the grown-up closes the bleeder valve and repeats the process until all the air in the brake line is gone.

Lastly, the grown-up checks the brake fluid level and adds more brake fluid, if necessary. And that's it! The brakes should be good to go now that all the air is out of the brake lines.