How Much You Know About Drum Brakes? Quiz

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  • SAE J2784
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Atahcpss
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Quizzes Created: 39 | Total Attempts: 148,544
| Attempts: 6,331 | Questions: 20 | Updated: Mar 22, 2025
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1. True or False. The composition of the lining material affects brake operation. Materials that provide good braking with low pedal pressures tend to lose efficiency when they get hot.

Explanation

Composition of the lining effects the coefficient of friction. Brakes do lose their efficiency when they get hot.

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About This Quiz
How Much You Know About Drum Brakes? Quiz - Quiz

Explore the workings of drum brakes in this focused quiz. Test your knowledge on components like hold-down springs, specialty springs, and brake linings. Understand the duo-servo drum brake system and the impact of lining material on brake efficiency. Ideal for automotive students and professionals.

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2. _____________________ do just what their name suggests; they hold the brake shoes against the backing plate.

Explanation

Hold down springs hold the shoes to the backing plate.

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3. Which of the following can be found on a typical drum brake shoe?

Explanation

A brake shoe has all of these.

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4. Tech A says that the anti-chatter band used for turning brake drums is not necessary, and not installing it on the brake drum will not affect the results. Tech B says that you should always install the anti-chatter band to reduce vibration and get the correct finish on the brake drum. Who is correct?

Explanation

Always use the anti-chatter / silencer band.

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5. ___________________ are installed so the direction they are applied is the same as the forward rotation of the drum.

Explanation

Which way does a wheel turn when traveling forward? The leading shoe touches the drum first.

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6. Which of the following is a recommended tool for removing brake lines from a wheel cylinder?

Explanation

Both of these provide pressure to all sides of the fitting and allows the technician to get around the line to do so.

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7. Tech A says that you should always start lug nuts on the wheel stud by hand. Tech B says that on some vehicles you are required to install the hubcap before installing the lug nuts. Who is correct?

Explanation

Starting all fasteners by hand is best practice. Some hubcaps are held in place by the lug nuts.

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8. The ___________________ gets its name from using the servo action in both the forward and the reverse direction.

Explanation

Two actions comprise the self energizing, duo-servo drum brake system.

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9. Tech A says that it is a good practice to research any technical service bulletins for any brake system complaint. Tech B says that it is common practice to test-drive a vehicle even if the brake pedal goes to the floor. Who is correct?

Explanation

TSB's can help in repairing many brake and non-brake related repairs. If the brake pedal goes to the floor, should that vehicle be driven?

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10. Tech A says that many wheels use a tapered hole that matches the tapered end of the lug nut and centers the wheel on the wheel flange. Tech B says that manufacturers usually suggest tightening wheel lugs in a circular pattern. Who is correct?

Explanation

The taper is found to help center the fastener and if it is damaged, it should be replaced. Only a star pattern should be used when tightening wheel lugs.

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11. Tech A says that servicing the wheel bearings is a common part of a brake job if the vehicle has serviceable wheel bearings. Tech B says that if the vehicle uses non-serviceable bearings, the bearings should be checked during a brake job and replaced if they are worn out. Who is correct?

Explanation

Bearings that are serviceable should always be serviced when doing a brake job. Non-serviceable bearings should be inspected for excess play during maintenance inspections and brake jobs.

Submit
12. Wheel cylinders typically contain which of the following?

Explanation

Wheel cylinders typically contain both one or two pistons and a spring and expander set. The pistons are responsible for pushing the brake shoes against the drum, creating the necessary friction to stop the vehicle. The spring and expander set helps to retract the brake shoes once the brake pedal is released. Therefore, both A and B are correct.

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13. Tech A says that during a brake inspection, it is good practice to carefully peel back the dust boot from a wheel cylinder and see if there is any brake fluid behind the dust boot. A little brake fluid is normal. Tech B says that during a brake inspection, it is good practice to carefully peel back the dust boot from a wheel cylinder and see if there is any brake fluid behind the dust boot. If there is, the wheel cylinder is starting to leak and should be replaced. Who is correct?

Explanation

Yes, peeling the seal back slightly to inspect a wheel cylinder is correct, but no fluid should be seen. If found, it is bad and needs to be replaced.

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14. Tech A says that to reassemble a duo-servo brake, the backing plate pads should be lubricated. Tech B says that to reassemble a duo-servo brake, the star wheel assembly should be lubricated on the floating end. Who is correct?

Explanation

The contact points where the shoes touch the backing plate, there should be some brake lube applied. The floating end of the star adjuster should be inspected to ensure it is free, and it should be lubricated.

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15. Tech A says that when removing a hubless-style drum, you should first make matching marks on the drum and hub for reinstallation in the correct position. Tech B says that a center punch can be used to mark the position of the drum to hub. Who is correct?

Explanation

When removing brake components, always index the parts. Using a center punch is ok to make these marks.

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16. Which type of drum is typically used on common passenger vehicles?

Explanation

Most passenger vehicles have a hubless drum.

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17. Tech A says that if a hubless-style drum has screws or speed nuts holding the drum to the hub, you should remove them following the specified procedure. You cannot discard the speed nuts or the screws. Tech B says that if a hubless-style drum has screws or speed nuts holding the drum to the hub, you should remove them following the specified procedure. The speed nuts can be discarded and are not needed upon reassembly. The screws will be reused. Who is correct?

Explanation

The speed nuts that could be found, are nearly destroyed during removal, making it impossible to reinstall.

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18. All of the following components are part of a parking brake system in a drum brake, EXCEPT:

Explanation

The wheel cylinder is not responsible for applying the parking brakes.

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19. Which type of brake lining is typically used on light-duty vehicles?

Explanation

Light duty applications get bonded shoes, heavy uses get riveted shoes.

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20. __________________ are used to return links and levers on the parking brake system or the self-adjuster mechanism.

Explanation

Specialty springs have specific applications where they do one task.

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  • Answered
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True or False. The composition of the lining material affects brake...
_____________________ do just what their name suggests; they hold the...
Which of the following can be found on a typical drum brake shoe?
Tech A says that the anti-chatter band used for turning brake drums is...
___________________ are installed so the direction they are applied is...
Which of the following is a recommended tool for removing brake lines...
Tech A says that you should always start lug nuts on the wheel stud by...
The ___________________ gets its name from using the servo action in...
Tech A says that it is a good practice to research any technical...
Tech A says that many wheels use a tapered hole that matches the...
Tech A says that servicing the wheel bearings is a common part of a...
Wheel cylinders typically contain which of the following?
Tech A says that during a brake inspection, it is good practice to...
Tech A says that to reassemble a duo-servo brake, the backing plate...
Tech A says that when removing a hubless-style drum, you should first...
Which type of drum is typically used on common passenger vehicles?
Tech A says that if a hubless-style drum has screws or speed nuts...
All of the following components are part of a parking brake system in...
Which type of brake lining is typically used on light-duty vehicles?
__________________ are used to return links and levers on the parking...
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