Disk Brakes - How does it work?

Disk Brakes have been found on vehicles since the late 1890s, and became relatively standard on vehicles from the very beginning. That's not to say there hasn't been constant technological developments in terms of the braking system on your car, with fluid types and pad materials being developed to last longer and stop better. A basic understanding of the disk brake system on your vehicle can help you stay more informed, and help you make educated decisions when speaking with your mechanic. And of course, if you're learning to work on your car, this video will provide endless information for DIY and at home work. To start off, we have a brake rotor. This is the round piece seen just behind your wheel, attached to your wheel, that rotates as your vehicle goes down the road. This rotating mass is what we need to try to stop, or slow down, to slow down your vehicle. Some brake rotors are connected to the wheel hub as we see on this example, while others simply slip over the wheel studs, making them easier to replace, work on, or have resurfaced. The second part to this system is the brake caliper, this is a hydraulic caliper that allows pressure from your foot to expand or press out pistons. Is soooooo important that specific parts of this caliper remain clean, sealed, and free of rust or debris. A simple damaged rubber seal could lead to the part failing and ultimately a loosing or dragging your brakes. This would cause further damage. The third primary part and one of the most common components to need repaired or replaced is the brake pads themselves. These are made of a softer material, softer than the rotor itself, and are intended to wear down over time. There are two main parts which are the backing plate and the pad material, with other components like a low pad indicator being common, which makes a high squealing sound that is essentially yelling CHANGE ME before severe damage is done. In this video we will also talk about what happens when you press the pedal, and some basic ways the flow of fluid is metered or controlled to go more to the front than the rear. We will also have a brief talk about brake fluid, some of the risks associated with that. And the importance of having your brake fluid replaced.