Air Brake ABS Systems

This class (Anti-Lock Brake Systems) offers diagnostics and proper maintenance procedures on the Rockwell Wabco/Bendix Systems.

Discussion topics for the ABS System seminar include:

How do anti-lock brakes work?

The main advantage of anti-lock brakes is that they can reduce braking problems on wet and slippery roads. Anit-lock brakes work with a vehicle’s normal service brakes to decrease stopping distance and increase the control and stability of the vehicle during hard braking. The principle behind anti-locks is that a skidding wheel provides less stopping force and control than a rotating wheel. Anti-locks prevent wheels from skidding by monitoring the speed of each wheel and automatically pulsing the brake pressure on any wheels where skidding is detected.

Where are anti-lock brakes required?

The standard for tractors requires anti-lock control on the front axle and at least one rear axle. Each wheel must be independently controlled by an anti-lock modulator on at least one of the tractor axles. This ensures that a wheel provides shorter stopping distances and optimal braking force on all surfaces, especially on roads where one side is slipperier. For semi-trailers, at least one axle must have anti-locks. Full trailers must have anti-locks for at least one front and one rear axle.

Air Brake ABS Systems is part of our Truck Brakes Training Series. MTAC recommends participants also enroll in our Basic Air Systems and Air Brake Foundations classes.