Drum Brakes

Two technicians are discussing drum brake shoes. Technician A says that forward and​ rear-facing shoes are the same and can be installed in either position on any drum brake system. Technician B says that the darker color linings should always be placed toward the front of the vehicle. Which technician is​ correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Technician A says that the anchor pin​ (shoe anchor) is used to hold one end of the primary and secondary shoe return springs. Technician B says that the shoe anchor prevents the brake shoes from rotating with the drum when the brakes are applied. Which technician is​ correct?

• Technician A

• Technician B

• Both Technician A and B

• Neither Technician A nor B

Which lining does most of the braking on a​ dual-servo brake?

• Both contribute equally

• Front (forward facing)

• Rear (rearward facing)

• Depends on the speed of the vehicle

Which lining does most of the braking on a​ leading/trailing brake?

• Depends on the speed of the vehicle

• Trailing (rearward facing)

• Both contribute equally

• Leading (forward facing)

The brakes on a​ dual-servo drum system are designated as​ ________.

• Two leading shoes

• Primary and Secondary

• Leading and Trailing

• None of the above

​________ action uses drum rotation to force the brake shoe outward and wedge it tightly against the brake drum.

• Self- Energizing

• Centrifugal

• Centripetal

• Servo

When removing the Brake line from a Wheel Cylinder, what tool should be used?

• Correct size socket

• vise grips

• Flare nut or line wrench

• Allen wrench

As a general rule, how often should brakes be checked?

• Every 20,000 miles

• Annually

• Every 40,000 miles

• Every 2 years

Technician A says to make the finish cut at the slowest speed when machining brake drums. Technician B says that the drum should not exceed its discard diameter. Who is correct?

• Technician A only

• Technician B only

• Both Technician A and B

• Neither Technician A nor B

Duo-Servo brakes adjust:

• When applying the parking brake.

• When applying the brakes in forward.

• When applying the brakes in reverse.

• By variations in fluid pressure.