© EVERLY 2025 ALL RIGHTS RESERVED.
Brakes Exam Questions And Answers 100%
Pass.
On a car with disc/drum brakes, the front brakes grab quickly when light pedal pressure is
applied. This problem could be caused by a bad:
A. proportioning valve
B. pressure safety switch
C. metering valve
D. residual check valve - Answer✔C. The metering valve delays the flow of brake fluid to the
front calipers until the pressure in the system rises to a point where the wheel cylinder can
overcome the tension of the brake shoe return springs. The purpose is to have both front and rear
brakes apply simultane ously. This prevents the front brakesfrom locking up during light brake
applications.
The driver of a vehicle with power disc/drum brakes says that the brake pedal moves slowly to
the floor while maintaining pedal pressure at a stoplight. What could cause this problem?
A. leaking primary piston cup in mast cylinder
B. leaking power brake booster
C. leaking residual check valve in master cylinder
D. internal leak in the combination valve - Answer✔A. If the primary piston cup in the master
cylinder is leaking pressure will not build up ahead of the primary piston to increase pressure to
the rear brakes. The piston will then move forward until the spring is compressed enough to
move the secondary piston. Consequently, this internal leak will cause the brake pedal to slowly
drop to the floor.
Which of the following would MOST LIKELY happen if the measurements taken from the
check shown above varied from the manufacture's specifications?
A. noisy brake operation
B. brake grab or pull
C. pulsating brake pedal
D. low brake pedal - Answer✔C. Poor rotor parallelism (thickness variation) will cause a
pulsating brake pedal. This is due to the caliper piston movement that occurs as the pad rides
, © EVERLY 2025 ALL RIGHTS RESERVED.
over the alternating high and low areas on the disc. This action forces brake fluid to flow back
and forth from the caliper to the master cylinder, creating the pulsating pedal feedback.
What is the purpose of the master cylinder residual check valve(s) on vehicles equipped with
drum brakes?
A. allows the driver to pump up the brakes
B. prevents air from entering the hydraulic system
C. prevents wheel lockup by reducing the hydraulic pressure
D. reduces pedal pulsation by controlling hydraulic pressure - Answer✔B. Residual check
valve(s) are used on drum brakes to keep residual low pressure (slight static pressure) in the
brake system at all times even when the brake pedal Is released. This pressure (5-20 psi) keeps
the lips of the wheel cylinder piston cups tight against the cylinder walls to prevent air from
entering the system when at rest (brakes released).
A tech has just overhauled the front brakes on a vehicle with front disc and rear drum brakes.
However, when he attaches a pressure bleeder (pressurized to about 25 psi) to the master
cylinder, he cannot get any fluid to come out of the disc brake caliper bleeder screws. Which of
the following is MOST LIKELY the cause?
A. bad proportioning valve
B. bad pressure differential valve
C. proportioning valve release button not activated
D. metering valve released button not activated - Answer✔D. A metering valve requires a
minimum pressure (typically between 75-125 psi) to open. At this point pressurized fluid Hows
to the front calipers. Since the bleeder tank is only pressurized to 25 psi, fluid pressure is too low
to open the metering valve during this procedure. Therefore, when you use a pressure bleeder on
a system with a metering valve, you must manually keep the valve open by either pushing the
button in on the end of the valve, or pulling the stem outward on the end of the valve.
On a vehicle with single piston floating caliper front disc brakes, the brake pads on the left side
of the vehicle are almost completely worn while the right side is almost new. Tech A says that
too much rotor runout could be the cause. Tech B says that a binding caliper piston could be the
cause. Who is right?
A. Tech A
B. Tech B
C. Both
D. Neither - Answer✔B. Excessive rotor runout would cause a pulsating brake pedal, but not
uneven side-to-side pad wear. A frozen caliper piston on the other hand, will keep both inner and
outer brake pads equally applied against the rotor even when the brake pedal is released. This
constant friction will cause rapid pad wear in the affected caliper as well as a front-end pull.
What is the purpose of the bar that is being removed from the brake assembly shown below?
, © EVERLY 2025 ALL RIGHTS RESERVED.
A. to equalize the braking force between the shoes during normal braking
B. to center the shoes after each brake application
C. to force the shoes into the drum when the parking brakes are applied
D. to reduce the distance between the shoes and the drum - Answer✔C. The parking brake strut
bar forces the brake shoes into the drum when the parking brake is applied.
A hydraulic brake line is leaking. Which of the following is the correct repair procedure?
A. Cut out the bad section and replace the new steel tubing using compression fittings.
B. Replace the leaking line with double-flared, seamless copper tubing.
C. Cut out the bad section and replace with single-flared steel tubing using flare nuts and unions.
D. Replace the leaking line with double-flared steel tubing. - Answer✔D. Steel tubing of the
same size, type, and length with double flared ends must be used when replacing a traditional
SAE double inverted flare style hydrau lic brake line.
The set-up shown above is used to check:
A. rotor parallelism
B. wheel bearing adjustment
C. rotor lateral runout
D. rotor face wear - Answer✔C. Lateral runout is the move ment of the rotor from side to side as
it rotates on the steering knuckle spindle. The dial-indicator set-up shown in the illustration is
used to make this measurement once the wheel bear ing nut has been tightened (bearing play
removed).
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✔C. If a residual check valve was installed in a disc brake
master cylinder, it would cause in-creased 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. Tech A
says a restricted brake line to the left caliper can cause this problem. Tech B says a
malfunctioning proportioning valve is probably the cause. Who is right?
A. Tech A
B. Tech B
Brakes Exam Questions And Answers 100%
Pass.
On a car with disc/drum brakes, the front brakes grab quickly when light pedal pressure is
applied. This problem could be caused by a bad:
A. proportioning valve
B. pressure safety switch
C. metering valve
D. residual check valve - Answer✔C. The metering valve delays the flow of brake fluid to the
front calipers until the pressure in the system rises to a point where the wheel cylinder can
overcome the tension of the brake shoe return springs. The purpose is to have both front and rear
brakes apply simultane ously. This prevents the front brakesfrom locking up during light brake
applications.
The driver of a vehicle with power disc/drum brakes says that the brake pedal moves slowly to
the floor while maintaining pedal pressure at a stoplight. What could cause this problem?
A. leaking primary piston cup in mast cylinder
B. leaking power brake booster
C. leaking residual check valve in master cylinder
D. internal leak in the combination valve - Answer✔A. If the primary piston cup in the master
cylinder is leaking pressure will not build up ahead of the primary piston to increase pressure to
the rear brakes. The piston will then move forward until the spring is compressed enough to
move the secondary piston. Consequently, this internal leak will cause the brake pedal to slowly
drop to the floor.
Which of the following would MOST LIKELY happen if the measurements taken from the
check shown above varied from the manufacture's specifications?
A. noisy brake operation
B. brake grab or pull
C. pulsating brake pedal
D. low brake pedal - Answer✔C. Poor rotor parallelism (thickness variation) will cause a
pulsating brake pedal. This is due to the caliper piston movement that occurs as the pad rides
, © EVERLY 2025 ALL RIGHTS RESERVED.
over the alternating high and low areas on the disc. This action forces brake fluid to flow back
and forth from the caliper to the master cylinder, creating the pulsating pedal feedback.
What is the purpose of the master cylinder residual check valve(s) on vehicles equipped with
drum brakes?
A. allows the driver to pump up the brakes
B. prevents air from entering the hydraulic system
C. prevents wheel lockup by reducing the hydraulic pressure
D. reduces pedal pulsation by controlling hydraulic pressure - Answer✔B. Residual check
valve(s) are used on drum brakes to keep residual low pressure (slight static pressure) in the
brake system at all times even when the brake pedal Is released. This pressure (5-20 psi) keeps
the lips of the wheel cylinder piston cups tight against the cylinder walls to prevent air from
entering the system when at rest (brakes released).
A tech has just overhauled the front brakes on a vehicle with front disc and rear drum brakes.
However, when he attaches a pressure bleeder (pressurized to about 25 psi) to the master
cylinder, he cannot get any fluid to come out of the disc brake caliper bleeder screws. Which of
the following is MOST LIKELY the cause?
A. bad proportioning valve
B. bad pressure differential valve
C. proportioning valve release button not activated
D. metering valve released button not activated - Answer✔D. A metering valve requires a
minimum pressure (typically between 75-125 psi) to open. At this point pressurized fluid Hows
to the front calipers. Since the bleeder tank is only pressurized to 25 psi, fluid pressure is too low
to open the metering valve during this procedure. Therefore, when you use a pressure bleeder on
a system with a metering valve, you must manually keep the valve open by either pushing the
button in on the end of the valve, or pulling the stem outward on the end of the valve.
On a vehicle with single piston floating caliper front disc brakes, the brake pads on the left side
of the vehicle are almost completely worn while the right side is almost new. Tech A says that
too much rotor runout could be the cause. Tech B says that a binding caliper piston could be the
cause. Who is right?
A. Tech A
B. Tech B
C. Both
D. Neither - Answer✔B. Excessive rotor runout would cause a pulsating brake pedal, but not
uneven side-to-side pad wear. A frozen caliper piston on the other hand, will keep both inner and
outer brake pads equally applied against the rotor even when the brake pedal is released. This
constant friction will cause rapid pad wear in the affected caliper as well as a front-end pull.
What is the purpose of the bar that is being removed from the brake assembly shown below?
, © EVERLY 2025 ALL RIGHTS RESERVED.
A. to equalize the braking force between the shoes during normal braking
B. to center the shoes after each brake application
C. to force the shoes into the drum when the parking brakes are applied
D. to reduce the distance between the shoes and the drum - Answer✔C. The parking brake strut
bar forces the brake shoes into the drum when the parking brake is applied.
A hydraulic brake line is leaking. Which of the following is the correct repair procedure?
A. Cut out the bad section and replace the new steel tubing using compression fittings.
B. Replace the leaking line with double-flared, seamless copper tubing.
C. Cut out the bad section and replace with single-flared steel tubing using flare nuts and unions.
D. Replace the leaking line with double-flared steel tubing. - Answer✔D. Steel tubing of the
same size, type, and length with double flared ends must be used when replacing a traditional
SAE double inverted flare style hydrau lic brake line.
The set-up shown above is used to check:
A. rotor parallelism
B. wheel bearing adjustment
C. rotor lateral runout
D. rotor face wear - Answer✔C. Lateral runout is the move ment of the rotor from side to side as
it rotates on the steering knuckle spindle. The dial-indicator set-up shown in the illustration is
used to make this measurement once the wheel bear ing nut has been tightened (bearing play
removed).
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✔C. If a residual check valve was installed in a disc brake
master cylinder, it would cause in-creased 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. Tech A
says a restricted brake line to the left caliper can cause this problem. Tech B says a
malfunctioning proportioning valve is probably the cause. Who is right?
A. Tech A
B. Tech B
