ASE T4 Brakes (Medium Heavy Truck) Practice Questions - ASE T4 - Brakes (Medium Heavy Truck) Certification Exam

On a typical heavy-truck air brake system, what is the primary job of the air compressor governor?

It meters air to the front and rear circuits in a fixed ratio It limits the maximum service brake application pressure delivered to the brake chambers It cycles the compressor between loaded (building air) and unloaded modes to maintain reservoir pressure within a set range It controls the spring brake hold-off pressure

Correct Answer:

It cycles the compressor between loaded (building air) and unloaded modes to maintain reservoir pressure within a set range

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