A disc brake parts diagram shows the brake assembly divided into three components. At the bottom is the brake disc. In the middle is the brake housing, which fits into the brake disc. On the right side of the housing is the bleeder adapter, which fits into the packing and is covered by the bleeder valve. This is held in place by a washer and screw. Moving clockwise on the housing finds the brake disc guide assembly.
The disc guide assembly includes a lining that is held in place by a rivet. Further down on the housing is the inlet port busking, which is inserted into the packing.
The third tier of the disc brakes parts diagram is the brake release unit. This unit fits into the hole in the middle of the brake housing. The bottom of the unit is the brake lining, the center is the packing and the securing piece is the brake release itself.
Disc brakes employ calipers against brake pads that rest against the disc. This provides friction that slows and eventually stops a tire's rotation. Disc brakes have several advantages over classic drum brakes. Discs rarely overheat, as they cool easily after stopping. Additionally, they dry faster when exposed to precipitation, keeping them more effective in inclement weather.