Practice question

On an air disc brake, dragging and rapid uneven pad wear on one wheel is MOST likely caused by:

A weak governor
A saturated air dryer
An out-of-round drum
A seized caliper slide/guide pin or a sticking actuator preventing full pad release

Answer: D — A seized caliper slide/guide pin or a sticking actuator preventing full pad release

The correct answer is shown above. Try the full quiz for additional practice.