Question:
Why should you never push the brake pedal down when the spring brakes are on?
A
The brakes could be damaged by the combined forces of the springs and air pressure.
explanation
Never push the brake pedal down when
the spring brakes are on. If you do, the brakes could
be damaged by the combined forces of the springs
and the air pressure. Many brake systems are
designed so this will not happen. But not all systems
are set up that way, and those that are may not
always work. It is much better to develop the habit
of not pushing the brake pedal down when the
spring brakes are on.
(According to CDL Handbook)
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