Question 1

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?

Accepted Answer

A)  A only
B)  B only
C)  both A and B
D)  neither A nor BE) A) and B)
F) C) and D)

Question 2

Technician A says on a duo-servo brake the front shoe is called the primary shoe and the rear is the secondary shoe. Technician B says on a non-servo brake, the front shoe is called the leading shoe and the rear is the trailing shoe.

Accepted Answer

A)  A only
B)  B only
C)  both A and B
D)  neither A nor BE) C) and D)
F) B) and D)

Question 3

The parking brake cables should be adjusted before performing regular wheel brake service.

Accepted Answer

A) True 
 B)False

Question 4

On a duo-servo brake, the primary shoe is connected to the secondary shoe by the ____________________.

Accepted Answer

automatic ...

Question 5

The inability of drums to dissipate as much heat as disc brakes is one of the main reasons discs have replaced drums at the front of all late model cars and light trucks

Accepted Answer

A) True 
 B)False

Question 6

Identify the two drum brake system designs.

Accepted Answer

Duo-servo (self-ener...

Question 7

What is lining heat fade?

Accepted Answer

Lining heat fade is a friction-reducing condition that occurs when the lining becomes excessively hot. Lining heat fade hardens the pedal and lengthens the stopping distance of the vehicle.

Question 8

After resurfacing a brake drum, Technician A cleans it using hot soapy water and a lint-free cloth until it is thoroughly dry. Technician B cleans the drum using a lint-free cloth dipped in a special brake cleaning solution. Who is correct

Accepted Answer

A)  A only
B)  B only
C)  both A and B
D)  neither A nor BE) None of the above
F) B) and C) A

Question 9

The brake shoe lining provides ____________________ against the drum to stop the car.

Accepted Answer

The answer of The brake shoe lining provides ____________________ against...

Question 10

The effort of the parking brake pedal assembly or handgrip is multiplied and passed onto the rear cables by the ____________________ lever.

Accepted Answer

The answer of The effort of the parking brake pedal...

Question 11

Stepping on the brake pedal while a brake drum is off can cause the pistons in the wheel cylinder to overextend or pop apart.

Accepted Answer

A) True 
 B)False

Question 12

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?

Accepted Answer

A)  A only
B)  B only
C)  both A and B
D)  neither A nor BE) A) and C)
F) None of the above

Question 13

What tool is used to adjust the brake shoes before the drum is installed?

Accepted Answer

A)  drum micrometer
B)  dial indicator
C)  dial caliper
D)  shoe set gaugeE) B) and C)
F) A) and D) D

Question 14

Identify six common brake problems.

Accepted Answer

Spongy pedal; excessive pedal ...

Question 15

Technician A says brake linings are riveted to the brake shoes. Technician B says brake linings are bonded to the brake shoes. Who is correct?

Accepted Answer

A)  A only
B)  B only
C)  both A and B
D)  neither A nor BE) None of the above
F) A) and C)

Question 16

Brake linings should be replaced when linings are ______.

Accepted Answer

A)  worn to within 1/32 inch (.794 mm) of a rivet head
B)  contaminated with oil or grease
C)  contaminated with brake fluid
D)  All the answers are correct.E) A) and C)
F) None of the above

Question 17

What does the term duo-servo mean?

Accepted Answer

The term duo-servo drum brake ...

Question 18

Duo-servo drum brakes are also known as __________.

Accepted Answer

A)  leading-trailing brakes
B)  self-energizing brakes
C)  non-servo brakes
D)  None of the answers is correct.E) C) and D)
F) A) and D)

Question 19

Technician A says the discard dimension of a brake drum is the drum's allowable machining dimension. Technician B says a drum may be machined and used if within 10 percent of the discard dimension. Who is correct?

Accepted Answer

A)  A only
B)  B only
C)  both A and B
D)  neither A nor BE) A) and B)
F) A) and C)

Question 20

What is the difference between return springs and holddown springs?

Accepted Answer

Holddown springs pull the brake shoes la...

Exam 51: Drum Brakes

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?

Correct AnswerverifiedShow Answer

Technician A says on a duo-servo brake the front shoe is called the primary shoe and the rear is the secondary shoe. Technician B says on a non-servo brake, the front shoe is called the leading shoe and the rear is the trailing shoe.

Correct AnswerverifiedShow Answer

The parking brake cables should be adjusted before performing regular wheel brake service.

Correct AnswerverifiedShow Answer

On a duo-servo brake, the primary shoe is connected to the secondary shoe by the ____________________.

Correct Answerverifiedautomatic ...View AnswerShow Answer

The inability of drums to dissipate as much heat as disc brakes is one of the main reasons discs have replaced drums at the front of all late model cars and light trucks

Correct AnswerverifiedShow Answer

Identify the two drum brake system designs.

Correct AnswerverifiedDuo-servo (self-ener...View AnswerShow Answer

What is lining heat fade?

Correct AnswerverifiedLining heat fade is a friction-reducing condition that occurs when the lining becomes excessively hot. Lining heat fade hardens the pedal and lengthens the stopping distance of the vehicle.

After resurfacing a brake drum, Technician A cleans it using hot soapy water and a lint-free cloth until it is thoroughly dry. Technician B cleans the drum using a lint-free cloth dipped in a special brake cleaning solution. Who is correct

Correct AnswerverifiedA

The brake shoe lining provides ____________________ against the drum to stop the car.

Correct AnswerverifiedShow Answer

The effort of the parking brake pedal assembly or handgrip is multiplied and passed onto the rear cables by the ____________________ lever.

Correct AnswerverifiedShow Answer

Stepping on the brake pedal while a brake drum is off can cause the pistons in the wheel cylinder to overextend or pop apart.

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

What tool is used to adjust the brake shoes before the drum is installed?

Correct AnswerverifiedD

Identify six common brake problems.

Correct AnswerverifiedSpongy pedal; excessive pedal ...View AnswerShow Answer

Technician A says brake linings are riveted to the brake shoes. Technician B says brake linings are bonded to the brake shoes. Who is correct?

Correct AnswerverifiedShow Answer

Brake linings should be replaced when linings are ______.

Correct AnswerverifiedShow Answer

What does the term duo-servo mean?

Correct AnswerverifiedThe term duo-servo drum brake ...View AnswerShow Answer

Duo-servo drum brakes are also known as __________.

Correct AnswerverifiedShow Answer

Technician A says the discard dimension of a brake drum is the drum's allowable machining dimension. Technician B says a drum may be machined and used if within 10 percent of the discard dimension. Who is correct?

Correct AnswerverifiedShow Answer

What is the difference between return springs and holddown springs?

Correct AnswerverifiedHolddown springs pull the brake shoes la...View AnswerShow Answer

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automatic ...
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Duo-servo (self-ener...
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Lining heat fade is a friction-reducing condition that occurs when the lining becomes excessively hot. Lining heat fade hardens the pedal and lengthens the stopping distance of the vehicle.

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A

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D

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Spongy pedal; excessive pedal ...
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The term duo-servo drum brake ...
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Holddown springs pull the brake shoes la...
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