BC Transit – Air Brake Course

Mechanical Release of the Park Brake (Caging the Spring)
The vehicle must be blocked before beginning the caging
operation. The service brake and the park brake will not
function because the caging bolt renders the push rod
immovable.
Note: “Maxi-Brake”
.
park brakes used on
buses (vehicles with air
suspensions) utilise an
“Emergency Release
reservoir” to release the
park brake, and cannot
be caged in this manner.
Caging Bolt inserted into spring brake chamber
89