Semi Truck Air Brake System

Basic air brake system schematics home.

Semi truck air brake system.

Air brakes are used in large heavy vehicles particularly those having multiple trailers which must be linked into the brake system such as trucks buses trailers and. The truck s air braking system has several tasks. In addition it must direct that air s flow. Finally it uses the energy of air pressure and changes it into mechanical force.

First it keeps up a steady supply of compressed air. Once the system reaches its operating pressure the brakes are freed and ready to use. Semi truck air brake systems is used most of the time 99 9 of the time. A truck s air brake system is really made up of three different brake systems.

The system must be pressurized with air before the brakes will release at rest the brakes remain engaged. An air brake or more formally a compressed air brake system is a type of friction brake for vehicles in which compressed air pressing on a piston is used to apply the pressure to the brake pad needed to stop the vehicle. As the brakes are applied air pressure decreases as the amount of air decreases the valve allows air back into the reservoir tanks while the brakes move to the applied position. In this video i cover the main components of the air brake system on a semi truck and how they work.