Michigan State Brakes Certification Exam Questions And Answers

When checking a newly turned drum before putting it back on, you notice a thread-like grooves in the braking surface. Why are the grooves there? {Ans: The lathe was not adjusted properly when the drum was turned}Which of the following incorrect service procedures could cause brake pedal pulsation? {Ans: incorrect run-out on the car brake lathe}What does a load sensing proportioning valve do? {Ans: It increases the hydraulic pressure during braking at the rear wheel cylinders when the vehicle is loaded}A rattle is a single piston disc brake assembly which goes away when the brakes are applied is most likely a result of: {Ans: Loose pads in the caliper}The brakes of a car squeal each time they are applied, which of the following is the LEAST likely source of the noise? {Ans: Glazed brake pads}If a drum brake self-adjuster seizes up, the likely result will be: {Ans: NOT a low pedal, worn or brake drum, or a loose emergency brake cable.}