Chapter 51 Drum Brakes Test Review

1. In a typical drum brake, which component provides a foundation for the brake shoes and associated hardware?

2. Duo-servo drum brakes are also known as _______.

3. Technician A says an out-of-round drum can cause a pulsating brake pedal. Technician B says an out-of-round drum can cause the brakes to grab. Who is correct?

4. Technician A says the leading shoe in a non-servo brake does most of the work when the brakes are applied while in reverse. Technician B says the trailing shoe does most of the work when the brake are applied while moving forward. Who is correct?

5. Non-servo type brakes are normally found on _______.

6. What must be done first to remove a brake drum that is ridged and cannot be pulled past the edge of the shoes?

7. The left rear brake drum is scored, but the right rear drum looks as good as new. Technician A says the left-side drum should be resurfaced and the right-side drum should be reinstalled without resurfacing. Technician B says both sides should be remachined to a similar diameter. Who is correct?

8. A drum with a taper or out-of-roundness exceeding 0.006 inch (0.152 mm) is considered ______.

9. Duo-servo drum brake systems are being discussed. Technician A says the primary shoe lining is often thicker than the secondary shoe lining. Technician B says the primary shoe typically has more lining surface area than the secondary shoe. Who is correct?

10. Technician A says the anchor pin acts as a brake shoe stop. Technician B says the return springs on a duo-servo brake are hooked over the anchor pin. Who is correct?