Aumt Brake Final Exam |Complete Questions with Graded A+ Answers
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Course
HEAVY TRUCK BRAKES
Institution
HEAVY TRUCK BRAKES
Aumt Brake Final Exam |Complete Questions with Graded A+ Answers
Tech A says that parking brakes on drum brake vehicles use separate brake shoes for backup in an emergency. Tech B says that parking brakes on drum brake vehicles mechanically operate the standard drum brake shoes. Who iscorrect?
Te...
Aumt Brake Final Exam |Complete Questions
with Graded A+ Answers
Tech A says that parking brakes on drum brake vehicles use separate brake shoes for backup in an
emergency. Tech B says that parking brakes on drum brake vehicles mechanically operate the
standard drum brake shoes. Who iscorrect?
Tech B
Which of these drum brake systems uses servo action in both directions?
Duo-servo drum brake systems
Tech A says that brake shoe linings saturated with brake fluid from a leaky wheel cylinder can be
cleaned with brake cleaner and reused as long as they aren't worn out. Tech B says that brake shoes
should be replaced in axle sets. Who is correct?
Tech B
Tech A says that a metal-on-metal grinding noise in drum brakes generally requires replacing the
brake shoes and resurfacing or replacing the drums. Tech B says that one way to help identify
whether a problem is coming from the front or rear brakes is to test-drive the vehicle in a safe place
at a relatively low speed and lightly apply the parking brake. Who is correct?
both A and B
Tech A says that most brake drums are designed to be machined if minor surface issues are present.
Tech B says that brake drums can be reused if they are machined larger than specifications, as long as
the surface is smooth. Who is correct?
Tech A
All of the following statements with respect to a wheel cylinder and piston are true EXCEPT:
It is standard practice to hone out deep pits in the wheel cylinder bore.
The component of the drum brake system attached to the backing plate is the:
wheel cylinder
Tech A says to use an air hose to clean the backing plate of dust and contamination. Tech B says to
use a water-based cleaning solution to clean the backing plate of dust and contamination. Who is
correct?
Tech B
Among the tools used to diagnose and repair drum brake systems, the wheel cylinder piston clamp is
used to:
hold the pistons in the wheel cylinder while the brake shoes are removed.
Choose the correct statement:
The backing plate has holes stamped in it.
, Tech A says that duo-servo brake shoes are only anchored on the top. Tech B says that duo-servo
brakes typically use single-piston wheel cylinders. Who is correct?
Tech A
Tech A says that both secondary shoes should be installed on the passenger side of the vehicle. Tech B
says that the lining on the primary shoe is typically shorter in length than the lining on the secondary
shoe. Who is correct?
Tech B
When the driver releases the brake pedal, the brake shoes are withdrawn by the:
return spring
Which of the following brake tools is used to adjust brake shoes when the drum is installed?
brake spoon
Tech A says that when performing a brake job on the rear axle of an older vehicle, inspection finds
brake fluid under the dust boot; the wheel cylinder should be replaced. Tech B says that when a drum
brake return spring has failed, springs on both rear wheels need to be replaced. Who is correct?
both A and B
Tech A says that riveted lining is usually for heavy-duty or high-performance vehicles. Tech B says that
bonded lining is glued to the metal brake shoe. Who is correct?
Both A and B
Choose the correct statement:
Riveted linings are used on heavier duty or high-performance vehicles.
All of the following statements with respect to brake systems are true EXCEPT:
trailing shoes are self-energizing.
Tech A says that a cleaned-up self-adjuster can be installed on either side of the vehicle. Tech B says
that grease seals are meant to be reusable. Who is correct?
Neither A nor B
The component that prevents a direct path for water spray and dirt to enter the brake drum is the:
Labyrinth seal.
Tech A says that an antilock brake system (ABS) allows the front wheels to be steered during a panic
stop. Tech B says that ABS sensors apply or release hydraulic pressure to the wheel brake units during
ABS brake events. Who is correct?
Tech A
If we triple the speed of an object, the kinetic energy will:
increase by nine times.
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