Question 1

Technician A says that a disadvantage of drum brakes is that they require an adjusting mechanism to maintain the proper clearance between the shoe and drum. Technician B says that a disadvantage of drum brakes is that they pull the car to one side during braking under certain conditions. Which technician is correct?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both technicians A and B
D)  Neither technician A nor BE) A) and D)
F) A) and B)

Question 2

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

Accepted Answer

A)  Self-energizing
B)  Centripetal
C)  Servo
D)  CentrifugalE) B) and D)
F) B) and C) A

Question 3

Drum brake shoes ________.

Accepted Answer

A)  Can have one shoe that is longer than the other on the same wheel brake
B)  Can have bonded linings
C)  Can have riveted linings
D)  All of the above are possibleE) None of the above
F) A) and B)

Question 4

The last two letters of a lining edge code reads EF. This means ________.

Accepted Answer

A)  The lining has a higher coefficient of friction when cold than when hot
B)  The lining meets SAE standards for durability
C)  The lining has a higher coefficient of friction when hot than when cold
D)  The lining manufacturing codeE) A) and C)
F) B) and C)

Question 5

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 shoe anchor prevents the brake shoes from rotating with the drum when the brakes are applied. Which technician is correct?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both Technicians A and B
D)  Neither technician A nor BE) A) and D)
F) None of the above

Question 6

Holes may be provided in the backing plate for inspecting brake lining wear.

Accepted Answer

A) True 
 B)False

Question 7

The greatest disadvantage of drum brakes is ________.

Accepted Answer

A)  Lack of power assist action
B)  Brake fade
C)  Poor parking brake performance
D)  Brake adjustmentE) C) and D)
F) B) and C) B

Question 8

Mechanical fade occurs when the friction material overheats.

Accepted Answer

A) True 
 B)False

Question 9

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?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both Technicians A and B
D)  Neither technician A nor BE) C) and D)
F) None of the above

Question 10

Technician A says that the labyrinth seal (drum groove)  helps to keep water from getting into a drum brake. Technician B says that only synthetic brake grease, lithium brake grease or anti-seize compound should be used as a brake lubricant. Which technician is correct?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both Technicians A and B
D)  Neither technician A nor BE) A) and B)
F) A) and C)

Question 11

Automatic adjusters may be actuated by all of the following EXCEPT ________.

Accepted Answer

A)  Air pressure
B)  Lever
C)  Parking brake
D)  CableE) All of the above
F) None of the above

Question 12

The lining of the secondary shoe is usually larger than the primary shoe lining.

Accepted Answer

A) True 
 B)False

Question 13

What type of drum brake system is shown below?

Accepted Answer

A)  Dual-servo
B)  Double-leading
C)  Leading-trailing
D)  Double-trailingE) All of the above
F) C) and D)

Question 14

What term describes component "B" in this illustration?

Accepted Answer

A)  Support pads
B)  Shoe nibs
C)  Vibration dampers
D)  Shoe anchorsE) B) and D)
F) B) and C)

Question 15

What type of drum brake system is shown below?

Accepted Answer

A)  Dual-servo
B)  Double-trailing
C)  Double-leading
D)  Leading-trailingE) B) and C)
F) A) and D)

Question 16

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

Accepted Answer

A)  Both contribute equally
B)  Front (forward facing) 
C)  Rear (rearward facing) 
D)  Depends on the speed of the vehicleE) All of the above
F) B) and C)

Question 17

Technician A says that starwheel adjusters use different threads (left and right handed)  for the left and right sides of the vehicle. Technician B says that a pawl controls the teeth of the starwheel adjuster. Which technician is correct?

Accepted Answer

A)  Technician A only
B)  Technician B only
C)  Both Technicians A and B
D)  Neither technician A nor BE) A) and D)
F) A) and C)

Question 18

What term describes component "A" in this illustration?

Accepted Answer

A)  Shoe anchor
B)  Mounting pin
C)  Shoe adjuster
D)  Bleeder screwE) B) and D)
F) A) and B) A

Question 19

A leading-trailing brake works well in reverse but not well forward.

Accepted Answer

A) True 
 B)False

Question 20

On non-servo brakes, which shoe does most of the braking in during forward movement of the vehicle?

Accepted Answer

A)  The primary shoe
B)  The secondary shoe
C)  The leading shoe
D)  The trailing shoeE) B) and C)
F) C) and D)

Exam 99: Drum Brakes

Correct Answer
verified

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

Correct Answer
verified
A

Drum brake shoes ________.

Correct Answer
verified

The last two letters of a lining edge code reads EF. This means ________.

Correct Answer
verified

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 shoe anchor prevents the brake shoes from rotating with the drum when the brakes are applied. Which technician is correct?

Correct Answer
verified

Holes may be provided in the backing plate for inspecting brake lining wear.

Correct Answer
verified

The greatest disadvantage of drum brakes is ________.

Correct Answer
verified
B

Mechanical fade occurs when the friction material overheats.

Correct Answer
verified

Correct Answer
verified

Technician A says that the labyrinth seal (drum groove) helps to keep water from getting into a drum brake. Technician B says that only synthetic brake grease, lithium brake grease or anti-seize compound should be used as a brake lubricant. Which technician is correct?

Correct Answer
verified

Automatic adjusters may be actuated by all of the following EXCEPT ________.

Correct Answer
verified

The lining of the secondary shoe is usually larger than the primary shoe lining.

Correct Answer
verified

What type of drum brake system is shown below?

Correct Answer
verified

What term describes component "B" in this illustration?

Correct Answer
verified

What type of drum brake system is shown below?

Correct Answer
verified

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

Correct Answer
verified

Technician A says that starwheel adjusters use different threads (left and right handed) for the left and right sides of the vehicle. Technician B says that a pawl controls the teeth of the starwheel adjuster. Which technician is correct?

Correct Answer
verified

What term describes component "A" in this illustration?

Correct Answer
verified
A

A leading-trailing brake works well in reverse but not well forward.

Correct Answer
verified

On non-servo brakes, which shoe does most of the braking in during forward movement of the vehicle?

Correct Answer
verified

Exam 99: Drum Brakes

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA

Drum brake shoes ________.

Correct AnswerverifiedShow Answer

The last two letters of a lining edge code reads EF. This means ________.

Correct AnswerverifiedShow Answer

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 shoe anchor prevents the brake shoes from rotating with the drum when the brakes are applied. Which technician is correct?

Correct AnswerverifiedShow Answer

Holes may be provided in the backing plate for inspecting brake lining wear.

Correct AnswerverifiedShow Answer

The greatest disadvantage of drum brakes is ________.

Correct AnswerverifiedB

Mechanical fade occurs when the friction material overheats.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Technician A says that the labyrinth seal (drum groove) helps to keep water from getting into a drum brake. Technician B says that only synthetic brake grease, lithium brake grease or anti-seize compound should be used as a brake lubricant. Which technician is correct?

Correct AnswerverifiedShow Answer

Automatic adjusters may be actuated by all of the following EXCEPT ________.

Correct AnswerverifiedShow Answer

The lining of the secondary shoe is usually larger than the primary shoe lining.

Correct AnswerverifiedShow Answer

What type of drum brake system is shown below?

Correct AnswerverifiedShow Answer

What term describes component "B" in this illustration?

Correct AnswerverifiedShow Answer

What type of drum brake system is shown below?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Technician A says that starwheel adjusters use different threads (left and right handed) for the left and right sides of the vehicle. Technician B says that a pawl controls the teeth of the starwheel adjuster. Which technician is correct?

Correct AnswerverifiedShow Answer

What term describes component "A" in this illustration?

Correct AnswerverifiedA

A leading-trailing brake works well in reverse but not well forward.

Correct AnswerverifiedShow Answer

On non-servo brakes, which shoe does most of the braking in during forward movement of the vehicle?

Correct AnswerverifiedShow Answer

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A

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B

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A

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