Question:
How do air-operated disc brakes work?
A
Air pressure acts on the brake chamber and slack adjuster. The pressure of the brake chamber on the slack adjuster turns the power screw.
explanation
In air-operated disc brakes, air
pressure acts on a brake chamber and slack
adjuster, like s-cam brakes. But instead of the s.
cam, a "power screw" is used. The pressure of the
brake chamber on the slack adjuster turns the
power screw.
(According to CDL Handbook )
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