Practice question

What does excessive travel (free play) on an S-cam brake slack adjuster indicate?

  1. The brake shoes are worn or out of adjustment, resulting in delayed braking and severe loss of stopping power
  2. The brake shoes are brand new and functioning perfectly
  3. The air compressor is pumping too much air
  4. The tires are over-inflated

Answer: A — The brake shoes are worn or out of adjustment, resulting in delayed braking and severe loss of stopping power

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

Practice more: AF Commercial Driving Theory Practice Questions - Afghanistan Driving License Theory Test - Commercial & Heavy Vehicle Exam →