Question 1

Technician A says a fixed rotor has an integral hub inside which the wheel bearings are mounted. Technician B says a floating rotor is less expensive than a fixed rotor and can be replaced easily and economically. Who is correct?

Accepted Answer

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

Question 2

Technician A readjusts the wheel bearings before measuring lateral runout. Technician B resurfaces or replaces rotors that have more than 0.003 inch of lateral runout. 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) All of the above

Question 3

What prevents moisture from entering the cylinder bore?

Accepted Answer

A)   the phenolic piston
B)   the caliper drag
C)   the splash shield
D)   the dust bootE) None of the above
F) B) and C)

Question 4

Which of the following statements concerning the caliper assembly is NOT correct?

Accepted Answer

A)   The caliper housing is usually a two-piece unit constructed from aluminum or cast iron
B)   Caliper action converts hydraulic pressure to mechanical force
C)   A caliper assembly can contain as many as four cylinder bores and pistons
D)   The caliper assembly provides a means of forcing the brake pads against the rotorE) A) and B)
F) All of the above

Question 5

Large vehicles typically use ______ rotors.

Accepted Answer

A)   solid
B)   ventilated
C)   two-piece
D)   all answers are correctE) None of the above
F) C) and D)

Question 6

Technician A says floating calipers must be removed from the steering knuckle when replacing brake pads. Technician B says fixed calipers must be removed from the steering knuckle when replacing pads. 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) All of the above

Question 7

____________________ rotors are made of two different materials, usually cast iron and steel, to reduce weight.

Accepted Answer

The answer of ____________________ rotors are made of two different...

Question 8

____________________ brakes cause poor fuel economy and generate destructive amounts of heat that can cause serious brake damage and brake failure.

Accepted Answer

The answer of ____________________ brakes cause poor fuel economy and...

Question 9

Identify four disc brake rotor problems.

Accepted Answer

Rotor problems include insuffi...

Question 10

Electrical sensors on some vehicles advise the driver when the brake pads have worn thin and need to be replaced.

Accepted Answer

A) True 
 B)False

Question 11

Technician A says that worn pad linings can cause rotor wear. Technician B says that hard spots in a rotor usually result from a manufacturing defect. Who is correct?

Accepted Answer

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

Question 12

Why is it important to install unidirectional rotors on the correct side of the vehicle?

Accepted Answer

A unidirectional rotor has cur...

Question 13

After new pads are installed, Technician A breaks in the new pads by making a half dozen or more hard stops from high speed to check whether the brakes will fade when hot. Technician B breaks in the new pads with several gentle to moderate stops, allowing time for the pads and rotors to cool between stops. 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)

Question 14

What is the difference between front disc brakes and rear disc brakes?

Accepted Answer

The only difference between a front and ...

Question 15

What is lateral runout?

Accepted Answer

Lateral runout is the wobbling...

Question 16

When replacing rear pads on actuating-type calipers, the piston must be kept from spinning as the C-clamp pushes the piston back into the caliper bore.

Accepted Answer

A) True 
 B)False

Question 17

Rotor thickness is measured at about ____________________ inch in from the outer edge of the rotor.

Accepted Answer

The answer of Rotor thickness is measured at about ____________________...

Question 18

A typical floating caliper housing is designed with one caliper piston.

Accepted Answer

A) True 
 B)False

Question 19

Sliding calipers move on bolts or pins.

Accepted Answer

A) True 
 B)False

Question 20

What component in the brake caliper acts as a retracting mechanism for the piston when hydraulic pressure is released?

Accepted Answer

A)   dust boot
B)   square cut O-ring
C)   caliper slide
D)   accumulator pistonE) A) and B)
F) A) and C)

Exam 52: Disc Brakes

When replacing rear pads on actuating-type calipers, the piston must be kept from spinning as the C-clamp pushes the piston back into the caliper bore.

Correct Answer
verified

____________________ rotors are made of two different materials, usually cast iron and steel, to reduce weight.

Correct Answer
verified

Technician A says that worn pad linings can cause rotor wear. Technician B says that hard spots in a rotor usually result from a manufacturing defect. Who is correct?

Correct Answer
verified

Technician A says floating calipers must be removed from the steering knuckle when replacing brake pads. Technician B says fixed calipers must be removed from the steering knuckle when replacing pads. Who is correct?

Correct Answer
verified

Which of the following statements concerning the caliper assembly is NOT correct?

Correct Answer
verified

Large vehicles typically use ______ rotors.

Correct Answer
verified

Rotor thickness is measured at about ____________________ inch in from the outer edge of the rotor.

Correct Answer
verified

Technician A says a fixed rotor has an integral hub inside which the wheel bearings are mounted. Technician B says a floating rotor is less expensive than a fixed rotor and can be replaced easily and economically. Who is correct?

Correct Answer
verified

What is the difference between front disc brakes and rear disc brakes?

Correct Answer
verified
The only difference between a front and ...
View Answer

Correct Answer
verified

Sliding calipers move on bolts or pins.

Correct Answer
verified

Technician A readjusts the wheel bearings before measuring lateral runout. Technician B resurfaces or replaces rotors that have more than 0.003 inch of lateral runout. Who is correct?

Correct Answer
verified

What component in the brake caliper acts as a retracting mechanism for the piston when hydraulic pressure is released?

Correct Answer
verified

Identify four disc brake rotor problems.

Correct Answer
verified
Rotor problems include insuffi...
View Answer

What is lateral runout?

Correct Answer
verified
Lateral runout is the wobbling...
View Answer

____________________ brakes cause poor fuel economy and generate destructive amounts of heat that can cause serious brake damage and brake failure.

Correct Answer
verified

Electrical sensors on some vehicles advise the driver when the brake pads have worn thin and need to be replaced.

Correct Answer
verified

Why is it important to install unidirectional rotors on the correct side of the vehicle?

Correct Answer
verified
A unidirectional rotor has cur...
View Answer

What prevents moisture from entering the cylinder bore?

Correct Answer
verified

A typical floating caliper housing is designed with one caliper piston.

Correct Answer
verified

Exam 52: Disc Brakes

When replacing rear pads on actuating-type calipers, the piston must be kept from spinning as the C-clamp pushes the piston back into the caliper bore.

Correct AnswerverifiedShow Answer

____________________ rotors are made of two different materials, usually cast iron and steel, to reduce weight.

Correct AnswerverifiedShow Answer

Technician A says that worn pad linings can cause rotor wear. Technician B says that hard spots in a rotor usually result from a manufacturing defect. Who is correct?

Correct AnswerverifiedShow Answer

Technician A says floating calipers must be removed from the steering knuckle when replacing brake pads. Technician B says fixed calipers must be removed from the steering knuckle when replacing pads. Who is correct?

Correct AnswerverifiedShow Answer

Which of the following statements concerning the caliper assembly is NOT correct?

Correct AnswerverifiedShow Answer

Large vehicles typically use ______ rotors.

Correct AnswerverifiedShow Answer

Rotor thickness is measured at about ____________________ inch in from the outer edge of the rotor.

Correct AnswerverifiedShow Answer

Technician A says a fixed rotor has an integral hub inside which the wheel bearings are mounted. Technician B says a floating rotor is less expensive than a fixed rotor and can be replaced easily and economically. Who is correct?

Correct AnswerverifiedShow Answer

What is the difference between front disc brakes and rear disc brakes?

Correct AnswerverifiedThe only difference between a front and ...View AnswerShow Answer

Correct AnswerverifiedShow Answer

Sliding calipers move on bolts or pins.

Correct AnswerverifiedShow Answer

Technician A readjusts the wheel bearings before measuring lateral runout. Technician B resurfaces or replaces rotors that have more than 0.003 inch of lateral runout. Who is correct?

Correct AnswerverifiedShow Answer

What component in the brake caliper acts as a retracting mechanism for the piston when hydraulic pressure is released?

Correct AnswerverifiedShow Answer

Identify four disc brake rotor problems.

Correct AnswerverifiedRotor problems include insuffi...View AnswerShow Answer

What is lateral runout?

Correct AnswerverifiedLateral runout is the wobbling...View AnswerShow Answer

____________________ brakes cause poor fuel economy and generate destructive amounts of heat that can cause serious brake damage and brake failure.

Correct AnswerverifiedShow Answer

Electrical sensors on some vehicles advise the driver when the brake pads have worn thin and need to be replaced.

Correct AnswerverifiedShow Answer

Why is it important to install unidirectional rotors on the correct side of the vehicle?

Correct AnswerverifiedA unidirectional rotor has cur...View AnswerShow Answer

What prevents moisture from entering the cylinder bore?

Correct AnswerverifiedShow Answer

A typical floating caliper housing is designed with one caliper piston.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
The only difference between a front and ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Rotor problems include insuffi...
View Answer

Correct Answer
verified
Lateral runout is the wobbling...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A unidirectional rotor has cur...
View Answer

Correct Answer
verified

Correct Answer
verified