BC Transit – Air Brake Course

Review of Section Three
In this section we learned…
The 5 main components of the air brake system…
•Compressor to pump air, with a governor to control the compressor
•Air Lines to allow the pressurized air to flow between the brake system
components
•Reservoirs to store the compressed air
•Foot Valve (usually called a brake pedal ) to apply the brakes by directing
compressed air from the reservoir to the brakes
•Foundation brakes, including brake chambers, slack adjusters, brake linings
and drums or rotors, to transfer the force generated by the compressed air through
mechanical linkage to apply the brakes
We know the purpose of each of these components within the air brake system, and we
achieved a basic understanding of how each one works.
In the next section we will begin to put these components together to build a basic
system.
Let’s review...
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