ASE A5 Brakes Exam Questions And Answers
Verified 100% Correct
Which of the following problems would be caused by using a
residual check valve in a disc brake master cylinder?
A. reduced brake pedal travel
B. reduced brake system pressure
C. increased brake pad wear
D. increased rotor runout - ANSWER 10. The correct
ANSWER is C. If a residual check valve was
installed in a disc brake master cylinder, it would cause increased
brake pad wear since the residual brake pressure would cause
the caliper pistons to keep the pads applied even when the brake
pedal is released.
A customer complains that their vehicle pulls to the right
when the brakes are applied. Technician A says a
restricted brake line to the left caliper can cause this
problem. Technician B says a malfunctioning proportioning
valve is probably the cause. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 11. The correct ANSWER is
A. A restriction in the brake line will cause a drop in fluid
pressure to the affected caliper. This will cause the
caliper to be unable to exert the same force against the
pads as the unrestricted side. Because of this, the
vehicle will pull to the side where the pressure is highest
and brake force is greatest. In this case, that would be
the right side.
With foot pressure applied, the brake pedal on a vehicle
with vacuum assisted power brakes moves down slightly
when the engine is started. Technician A says that this
condition can be caused by a leaking power brake booster
diaphragm. Technician B says that the cause could be a
faulty power brake booster check valve. Who is right?
,A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 12. The correct ANSWER is
D, neither technician is right. With the brake pedal
applied while starting the engine, the pedal should move
down slightly indicating that the vacuum booster is
operating properly.
Technician A says that the tool shown above is used to
adjust the brake shoes. Technician B says that the tool
shown above is used to determine the inside diameter of
the drum. Who is right? A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 13. The correct ANSWER is
A. The illustration shows a technician setting a brake
shoe adjustment gauge, or caliper, to the inside diameter
of a brake drum. The other side of the gauge is then
positioned over the brake shoes and the star wheel
turned until the shoes lightly contact each end of the
gauge. Technician B is wrong because a brake drum
micrometer is used to measure the inside diameter of a
brake drum.
The hydraulic system on a vehicle with integral ABS is to
be bled. Technician A says that the front brakes can be
bled in a conventional manner. Technician B says that both
front and rear brakes can only be bled using the pressure
from a
fully charged accumulator. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 14. The correct ANSWER is
A. The front hydraulic circuits in an integral ABS system
can be bled in the conventional manner since it is the
booster piston in the hydraulic modulator assembly that
supplies fluid to the front brakes. However, the rear
circuit is dependent upon boost pressure from the
, accumulator, which means the accumulator must be fully
charged in order to bleed the rear brakes.
A driver complains that the ABS system on his car
engages every time he applies the brakes on a cobblestone
roadway he uses going back-and-forth to work. This
condition means that:
A. The system is operating normally.
B. The wheels are traveling at different speeds.
C. A wheel speed sensor(s) is faulty.
D. both A and B - ANSWER 15. The correct ANSWER is
D. When a vehicle with ABS
is braked on abnormally irregular road surfaces, like a cobblestone
road, the wheels decelerate at different speeds. Because the
signals coming from the wheel speed sensors under this condition
are not in sync with each other, the ABS control unit interprets this
as impending wheel lockup and responds by engaging the system.
Two technicians are discussing the duo-servo type drum
brake design. Technician A says the brake lining on the
secondary shoe is usually longer and thicker than the brake
lining on the primary shoe. Technician B says the primary
shoe is installed toward the rear of the vehicle.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 16. The correct ANSWER is
A. In a duo-servo drum brake design under normal
forward braking, the friction developed by the secondary
lining is greater than the primary lining. Therefore, the
secondary shoe is typically longer and thicker than the
primary shoe. The primary shoe is installed facing the
direction of forward motion.
All of the following statements about leading-trailing type
drum brakes are true EXCEPT:
A. The leading shoe does most of the forward braking.
B. Both brake shoes are held against a fixed anchor on the
backing plate.
, C. They are self-energizing.
D. The trailing shoe does most of the reverse braking. -
ANSWER 17. The correct ANSWER is C. The leading-
trailing drum brake design is not self-energizing. This is
due to the fixed anchor on the backing plate, which
prevents the shoes from transferring their force to one
another.
Technician A says that DOT 5 brake fluid has a lower
boiling point than DOT 4. Technician B says that DOT 4
brake fluid is silicone-based and should never be used in an
ABS system. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 18. The correct ANSWER is
D, neither technician is
right. It is DOT 4 brake fluid that has a lower boiling point,
and DOT 5 that is silicone-based and should not be used in
any ABS system.
Brakes that drag or fail to release can be caused by which
of the following conditions in the master cylinder?
A. leaking primary cup
B. leaking secondary cup
C. failure of the residual pressure check valve
D. clogged compensating port - ANSWER 19. The correct
ANSWER is D. The compensating port allows for
residual hydraulic line pressure to be discharged into the
reservoir as the brake pedal is released. A clogged or
restricted compensating port will create a pressure build-
up, which will cause the brakes to drag or fail to release.
The port can be clogged by foreign matter, blocked by a
swollen primary cup or covered by the primary cup if the
master cylinder pushrod is improperly adjusted.
All of the following could cause a hard brake pedal on a
vehicle with power brakes EXCEPT:
A. an engine with the valves adjusted too tight
B. brake fluid on the linings
Verified 100% Correct
Which of the following problems would be caused by using a
residual check valve in a disc brake master cylinder?
A. reduced brake pedal travel
B. reduced brake system pressure
C. increased brake pad wear
D. increased rotor runout - ANSWER 10. The correct
ANSWER is C. If a residual check valve was
installed in a disc brake master cylinder, it would cause increased
brake pad wear since the residual brake pressure would cause
the caliper pistons to keep the pads applied even when the brake
pedal is released.
A customer complains that their vehicle pulls to the right
when the brakes are applied. Technician A says a
restricted brake line to the left caliper can cause this
problem. Technician B says a malfunctioning proportioning
valve is probably the cause. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 11. The correct ANSWER is
A. A restriction in the brake line will cause a drop in fluid
pressure to the affected caliper. This will cause the
caliper to be unable to exert the same force against the
pads as the unrestricted side. Because of this, the
vehicle will pull to the side where the pressure is highest
and brake force is greatest. In this case, that would be
the right side.
With foot pressure applied, the brake pedal on a vehicle
with vacuum assisted power brakes moves down slightly
when the engine is started. Technician A says that this
condition can be caused by a leaking power brake booster
diaphragm. Technician B says that the cause could be a
faulty power brake booster check valve. Who is right?
,A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 12. The correct ANSWER is
D, neither technician is right. With the brake pedal
applied while starting the engine, the pedal should move
down slightly indicating that the vacuum booster is
operating properly.
Technician A says that the tool shown above is used to
adjust the brake shoes. Technician B says that the tool
shown above is used to determine the inside diameter of
the drum. Who is right? A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 13. The correct ANSWER is
A. The illustration shows a technician setting a brake
shoe adjustment gauge, or caliper, to the inside diameter
of a brake drum. The other side of the gauge is then
positioned over the brake shoes and the star wheel
turned until the shoes lightly contact each end of the
gauge. Technician B is wrong because a brake drum
micrometer is used to measure the inside diameter of a
brake drum.
The hydraulic system on a vehicle with integral ABS is to
be bled. Technician A says that the front brakes can be
bled in a conventional manner. Technician B says that both
front and rear brakes can only be bled using the pressure
from a
fully charged accumulator. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 14. The correct ANSWER is
A. The front hydraulic circuits in an integral ABS system
can be bled in the conventional manner since it is the
booster piston in the hydraulic modulator assembly that
supplies fluid to the front brakes. However, the rear
circuit is dependent upon boost pressure from the
, accumulator, which means the accumulator must be fully
charged in order to bleed the rear brakes.
A driver complains that the ABS system on his car
engages every time he applies the brakes on a cobblestone
roadway he uses going back-and-forth to work. This
condition means that:
A. The system is operating normally.
B. The wheels are traveling at different speeds.
C. A wheel speed sensor(s) is faulty.
D. both A and B - ANSWER 15. The correct ANSWER is
D. When a vehicle with ABS
is braked on abnormally irregular road surfaces, like a cobblestone
road, the wheels decelerate at different speeds. Because the
signals coming from the wheel speed sensors under this condition
are not in sync with each other, the ABS control unit interprets this
as impending wheel lockup and responds by engaging the system.
Two technicians are discussing the duo-servo type drum
brake design. Technician A says the brake lining on the
secondary shoe is usually longer and thicker than the brake
lining on the primary shoe. Technician B says the primary
shoe is installed toward the rear of the vehicle.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 16. The correct ANSWER is
A. In a duo-servo drum brake design under normal
forward braking, the friction developed by the secondary
lining is greater than the primary lining. Therefore, the
secondary shoe is typically longer and thicker than the
primary shoe. The primary shoe is installed facing the
direction of forward motion.
All of the following statements about leading-trailing type
drum brakes are true EXCEPT:
A. The leading shoe does most of the forward braking.
B. Both brake shoes are held against a fixed anchor on the
backing plate.
, C. They are self-energizing.
D. The trailing shoe does most of the reverse braking. -
ANSWER 17. The correct ANSWER is C. The leading-
trailing drum brake design is not self-energizing. This is
due to the fixed anchor on the backing plate, which
prevents the shoes from transferring their force to one
another.
Technician A says that DOT 5 brake fluid has a lower
boiling point than DOT 4. Technician B says that DOT 4
brake fluid is silicone-based and should never be used in an
ABS system. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER 18. The correct ANSWER is
D, neither technician is
right. It is DOT 4 brake fluid that has a lower boiling point,
and DOT 5 that is silicone-based and should not be used in
any ABS system.
Brakes that drag or fail to release can be caused by which
of the following conditions in the master cylinder?
A. leaking primary cup
B. leaking secondary cup
C. failure of the residual pressure check valve
D. clogged compensating port - ANSWER 19. The correct
ANSWER is D. The compensating port allows for
residual hydraulic line pressure to be discharged into the
reservoir as the brake pedal is released. A clogged or
restricted compensating port will create a pressure build-
up, which will cause the brakes to drag or fail to release.
The port can be clogged by foreign matter, blocked by a
swollen primary cup or covered by the primary cup if the
master cylinder pushrod is improperly adjusted.
All of the following could cause a hard brake pedal on a
vehicle with power brakes EXCEPT:
A. an engine with the valves adjusted too tight
B. brake fluid on the linings
