Truck Air Brake Parts Information

Truck Air Brake Parts Information

Truck Air Brake Parts are essence to your truck’s talent to stop and are arguably one of the most important vehicle brake parts. Most trucks today have disc brakes, at least for the front wheels, anyway. But a lot of vehicles are now using disc brakes in the rear, too. In a disc-braking system the trucks wheels are affiliated to metal discs, or rotors, that spin along with the wheels. The job of the caliper is to slow the car’s wheels by creating rubbing with the rotors.

The brake caliper suits over the rotor like a clamp. Inside each caliper is a pair of metal plates bonded with rubbing material — these are called brake pads. The outboard brake pads are on the outside of the rotors and the inboard brake pads within. When you step on the brake, brake liquid from the master roller creates hydraulic pressure on one or more pistons in the brake caliper, forcing the pads against the rotor. The brake pads get high-rubbing surfaces and provide to slow the rotor down or even bring it to a fill in halt. When the rotor slows or stops, so does the wheel, because they’re affiliated to one another.

Air Brakes

Older trucks used drum brakes, where the motion of the wheels is slowed by rubbing between a rotating drum and brake shoes mounted inside the drum. This rubbing caused heat and gases to build up inside the drum, which often resulted in a loss of braking power known as brake fade. Because the brake pads in disc brake systems are outer to the disc rather than contained within a drum, they are more easily ventilated and heat doesn’t tend to build up quite as fast. Due to this reason, drum brakes have been largely replaced in modern vehicles by disc brakes; however, some less expensive cars still use drum brakes for the rear wheels, where less stopping power is required.

Parts of Air Brake

There are two kind of calipers: floating (or sliding) calipers and fixed calipers. Floating calipers move in and out congener to the rotor and have one or two pistons only on the inboard side of the rotor. This piston press the entire caliper when the brakes are operative, creating rubbing from the brake pads on both sides of the rotor. Fixed calipers, don’t move, but rather have pistons ordered on opposing sides of the rotor. Fixed calipers are generally preferred for their performance, but are more high priced than the floating kind. Some high-performance fixed calipers have two or more pairs of pistons (or “pots”) ordered on each side of the rotor — some have as many as six pairs total.

Especial tools are usable  when working with brake calipers, specially when replacing the brake pads.

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