Deck 13: Drum Brake System Inspection and Service

Question 1

When the rear brake shoes are replaced, a return spring breaks from age and rust: Technician A says only the broken spring should be replaced.Technician B says all of the brake springs should be replaced.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Answer 1

B

Question 2

An out-of-round brake drum can cause a brake pedal .........

Answer 2

pulsation

Question 3

The service brake pedal is low but firm and the parking brake does not hold the vehicle in place: Which is the most likely cause?

A)Misadjusted parking brake
B)Excessive shoe-to-drum clearance
C)Parking brake stuck on
D)Seized parking brake cable

Answer 3

B

Question 4

Full-floating rear differentials may require removing the ........to remove the drums to inspect the brakes.

Question 5

The parking brake does not lock the rear wheels even if fully applied: Technician A says excessive shoe-to-drum clearance may be the cause.Technician B says rusted self-adjusters may be the cause.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 6

........accumulation between the shoes and drum can be a source of brake noise.

Question 7

Technician A says to correct a brake pulsation concern the rear drums may need to be machined.Technician B says and on-car brake lathe can be used to correct out-of-round drums.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 8

A vehicle with rear drum brakes has a grinding noise when the brakes are applied: Technician A says excessive dust buildup in the drum brake can cause this.Technician B says worn rear brake linings can cause this.Who is correct?

A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question 9

Before adjusting the parking brake, a technician should first check the ........
brake adjustment.

Question 10

A ........or a wet sink can be used to clean brake dust from the brake assemblies.