AUMT BRAKE FINAL EXAM QUESTIONS
AND ANSWERS (GRADED A)
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? - ANSWER-Tech
B
Which of these drum brake systems uses servo action in both directions? - ANSWER-
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? -
ANSWER-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? - ANSWER-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? -
ANSWER-Tech A
All of the following statements with respect to a wheel cylinder and piston are true
EXCEPT: - ANSWER-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: -
ANSWER-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? - ANSWER-Tech B
Among the tools used to diagnose and repair drum brake systems, the wheel cylinder
piston clamp is used to: - ANSWER-hold the pistons in the wheel cylinder while the
brake shoes are removed.
, Choose the correct statement: - ANSWER-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? -
ANSWER-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? - ANSWER-Tech B
When the driver releases the brake pedal, the brake shoes are withdrawn by the: -
ANSWER-return spring
Which of the following brake tools is used to adjust brake shoes when the drum is
installed? - ANSWER-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? - ANSWER-both A and B
Vehicles equipped with disc brakes incorporate a mechanically operated drum-style
parking brake in the center of the rear disc brake rotors, commonly called a: -
ANSWER-top hat parking brake.
Which of these is a simple mechanical system that uses leverage to force a friction
block against one or more wheels? - ANSWER-Scrub brake
The cycle of energy transformation in a typical vehicle is: - ANSWER-Chemical
energy→Heat energy→Mechanical energy→Kinetic energy
Tech A says that a disc brake operates by clamping friction materials to the outside of a
disc. Tech B says that a drum brake operates by clamping friction materials to the
outside of a drum. Who is correct? - ANSWER-Tech A
The kind of brake fade caused by the brake fluid becoming so hot that it boils is: -
ANSWER-hydraulic fade.
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? -
ANSWER-Both A and B
Choose the correct statement: - ANSWER-Riveted linings are used on heavier duty or
high-performance vehicles.
AND ANSWERS (GRADED A)
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? - ANSWER-Tech
B
Which of these drum brake systems uses servo action in both directions? - ANSWER-
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? -
ANSWER-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? - ANSWER-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? -
ANSWER-Tech A
All of the following statements with respect to a wheel cylinder and piston are true
EXCEPT: - ANSWER-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: -
ANSWER-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? - ANSWER-Tech B
Among the tools used to diagnose and repair drum brake systems, the wheel cylinder
piston clamp is used to: - ANSWER-hold the pistons in the wheel cylinder while the
brake shoes are removed.
, Choose the correct statement: - ANSWER-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? -
ANSWER-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? - ANSWER-Tech B
When the driver releases the brake pedal, the brake shoes are withdrawn by the: -
ANSWER-return spring
Which of the following brake tools is used to adjust brake shoes when the drum is
installed? - ANSWER-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? - ANSWER-both A and B
Vehicles equipped with disc brakes incorporate a mechanically operated drum-style
parking brake in the center of the rear disc brake rotors, commonly called a: -
ANSWER-top hat parking brake.
Which of these is a simple mechanical system that uses leverage to force a friction
block against one or more wheels? - ANSWER-Scrub brake
The cycle of energy transformation in a typical vehicle is: - ANSWER-Chemical
energy→Heat energy→Mechanical energy→Kinetic energy
Tech A says that a disc brake operates by clamping friction materials to the outside of a
disc. Tech B says that a drum brake operates by clamping friction materials to the
outside of a drum. Who is correct? - ANSWER-Tech A
The kind of brake fade caused by the brake fluid becoming so hot that it boils is: -
ANSWER-hydraulic fade.
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? -
ANSWER-Both A and B
Choose the correct statement: - ANSWER-Riveted linings are used on heavier duty or
high-performance vehicles.
