Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 51, Problem 2ASRQ
Technician A says that a grinding noise from a drum brake when it is not applied can be caused by a bad wheel bearing. Technician B says that a grinding noise from a drum brake when it is not applied can be caused by worn brake hardware. Who is correct?
- Technician A only
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it has been determined that chatter and brake pull are being caused by hard spots on the brake drum: Technician A say that the problem can be solved by grinding off the hard spots. Technician B says that the drum must be replaced. who is correct?
Which of the following statements about drum
brake shoes is not true?
a. Linings may be riveted or bonded to the shoes.
b. Shoe indentions hold the shoe in place
against the backing plate.
c. The shoe rim supports the shoe lining.
d. The primary/leading shoe is typically the one
that is positioned toward the front of the
vehicle.
Which of the following is not done when performing a brake service?
A. Measure the rotor for out of round
B. Measure the pad thickness
C. Clean and lubricate moving parts
D. Inspect the calipers for any leaks or damage
Chapter 51 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 51 - Name the two methods of attaching brake lining...Ch. 51 - Explain how drum brakes create a self-multiplying...Ch. 51 - List at least five separate types of wear and...Ch. 51 - What is the job of wheel cylinder stops?Ch. 51 - Explain the operation of an integral drum brake...Ch. 51 - In a typical drum brake, which component provides...Ch. 51 - True or False? The name duo-servo drum brake is...Ch. 51 - Prob. 8RQCh. 51 - Which of the following statements about drum brake...Ch. 51 - Brake linings should be replaced when. linings are...
Ch. 51 - In the unapplied position, drum brake shoes arc...Ch. 51 - Duo-servo drum brakes are also known as what type...Ch. 51 - On most vehicles, the automatic adjuster cables or...Ch. 51 - Backing plates, struts, levers, and other metal...Ch. 51 - A buildup of brake dust and dirt between the...Ch. 51 - Technician A says that an out-of-round drum can...Ch. 51 - Technician A says that a grinding noise from a...Ch. 51 - It has been determined that chatter and brake pull...Ch. 51 - Technician A says that the discard dimension of a...Ch. 51 - After resurfacing a brake drum: Technician A...Ch. 51 - Drum linings are badly worn at their heel and toe:...Ch. 51 - When machining brake drums: Technician A tries to...Ch. 51 - While discussing what would happen if too much...Ch. 51 - Technician A checks the surface of the drum for...Ch. 51 - While discussing pull during braking: Technician A...
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- The basic frictional parts of a brake system are being discussed: Technician A says that the harder the frictional parts are pushed together, the higher the friction. Technician B says that the harder the frictional parts are pushed together, the more heat is developed. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardTechnician A says that the discard dimension of a brake drum is the drums allowable machining dimension. Technician B says that the discard dimension is the allowable wear dimension. There must be 0.030 inch left for wear after machining. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardWhich of the following statements about drum brake shoes is not true? Web thickness varies only with changes in shoe size. Many shoes have indented places along the edge of the rim. The shoe rim is welded to the web. The primary/leading shoe is typically the one that is positioned toward the front of the vehicle.arrow_forward
- During a brake inspection, the inner brake pad is found to be 3mm thick, while the outside pad is 8mm. Techinician A says this is a sign of a poorly lubricated hardware. Technician B says this is normal wear for brake pads. Who is correct? A. Technician A B. Technician B C. Both Technician A and B D. Neither Technician A or Barrow_forwardTrue or False? The name duo-servo drum brake is derived from the fact that the self-energizing force is transferred from one shoe to another with the wheel rotating forward.arrow_forwardWhile discussing the effects of overtorquing wheel lugs: Technician A says that this can cause the threads of the lugs and/or studs to distort. Technician B says that this can cause disc brake rotor distortion. Who is correct? Technician A Technician B Both A and B Neither A nor Barrow_forward
- While discussing what would happen if too much metal is removed from a drum by machining: Technician A says that noise can result from the thin drum vibrating when the brakes are applied. Technician B says that the brakes could fade because the thin drum is unable to absorb heat during braking. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardExplain how drum brakes create a self-multiplying brake force.arrow_forwardTechnician A says that fixed calipers use a piston on each side of the rotor to apply the brakes. Technician B says that sliding calipers typically use only one piston or pistons on one side of the rotor. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forward
- Which of the following is not a factor in determining the effectiveness of a brake system? Heat dissipation Lubricant Pressure Frictional contact areaarrow_forwardIn a typical drum brake, which component provides a foundation for the brake shoes and associated hardware? Wheel cylinder Drum Backing plate Liningarrow_forwardDuring a brake inspection, the inner brake pad is found to be 3mm thick, while the outside pad is 8mm. Technician A says this is a sign of a poorly lubricated hardware. Technician B says this is normal wear for brake pads. Who is correct? Technician A Technician B Both Technician A and B Neither Technician A or Barrow_forward
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