BC Transit – Air Brake Course

BC Transit – Air Brake Course
4. Basic Air Brake System:
a) Review How 5 Main Components Work Together
b) Quick Release Valve Function
c) Relay Valve Function
d) Park Brake System
Please note: the piping diagrams that follow, do not accurately represent the actual
valves and components in an air brake system. Our purpose is to provide you with
a basic, theoretical understanding of air brake systems sufficient for you to obtain
an air brake endorsement on your license, and perform a pre-trip inspection so as
to diagnose problems in the system before going on the road.
58