ASE BRAKES A5 (EXAM 3) QUESTIONS
WITH CORRECT ANSWERS 2025-2026
The goal of burnishing the brakes after a complete brake service is to:
a. heat the brake assembly
b. cool the brake assembly
c. set the wheel assembly
d. stretch the brake shoes CORRECT ANSWER A : heat the brake assembly
why : the brake assemblies are intentionally allowed to get heated during burnishing. this allows th
e braking materials to cure
Refer to the figure ( pg. 67 ) : the internal spring in the wheel cylinder is left out during a brake r
ebuild. Which of the following would be the most likely result?
a. air would be allowed in the brake fluid
b. the brake would drag
c. the brake would not apply
d. the brake would overheat CORRECT ANSWER A : air would be allowed in the brake fluid
why : if the spring was missing the cups could pull away from the walls and allow air into the syst
em
Which of the following is true concerning master cylinder pushrod adjustment?
a. there should be a slight gap between the pushrod and master cylinder piston
b. it should be adjusted until the piston is pushed in slightly
c. it should keep a slight pressure in the hydraulic system
,d. it should be adjusted at each brake pad replacement CORRECT ANSWER
A : there should be a slight gap between the pushrod and master cylinder piston
why : a slight gap should be present between the pushrod and master cylinder. this will leave the
compensating port open and allow for fluid expansion
Vacuum assist from the brake booster is present with the engine running but not present after the
vehicle's engine is shut off. which of the following could cause this condition?
a. a faulty vacuum check valve
b. a faulty vacuum booster hose
c. low manifold vacuum
d. a leaking intake manifold CORRECT ANSWER A : a faulty vacuum check valve
why : it could cause no vacuum stored in the brake booster after the engine is shut off
Tech A says an analog wheel speed sensor generates a square wave output signal. Tech B says a di
gital wheel speed sensor generates an ac signal. Who is correct?
a. A
b. B
c. A & B
d. neither CORRECT ANSWER D : neither
why : neither tech is correct. an analog wheel speed sensor generates an ac waveform, and a digit
al wheel speed sensor generates a dc waveform
Tech A says if a vehicle has a floating rear disc brake caliper the parking brake actuation mechanis
m will be inside the caliper piston. Tech B says if a vehicle has a fixed rear disc brake caliper the p
arking brake may be inside the disc brake rotor. Who is correct?
, a. A only
b. B only
c. both
d. neither CORRECT ANSWER C : both
why : the techs are correct, a floating rear caliper can use a parking brake system which has the
mechanism in the caliper piston. a fixed caliper will have the parking brake in the hat of the rotor
After a brake application, the inlet pressure gauge in the figure above drops to normal; however, t
he outlet pressure gauge remains higher than normal. Tech A says a faulty disc brake caliper could
be the cause. Tech B says a faulty wheel cylinder could be the cause. Who is correct? ( pg. 68 )
a. A
b. B
c. both
d. neither CORRECT ANSWER D : neither
why : a restricted combination valve could be the cause
The minimum rotor thickness specification is 1.250" (31.75mm). which of the following measureme
nts would indicate the rotor is reusable?
a. 1.115" (28.32 mm)
b. 1.125" (28.57 mm)
c. 1.225" (31.11 mm)
d. 1.520" (38.61 mm) CORRECT ANSWER D : 1.520" (38.61 mm)
why : this measurement is greater than specification, indicating the rotor is not worn too thin. this
specification is for minimum thickness
WITH CORRECT ANSWERS 2025-2026
The goal of burnishing the brakes after a complete brake service is to:
a. heat the brake assembly
b. cool the brake assembly
c. set the wheel assembly
d. stretch the brake shoes CORRECT ANSWER A : heat the brake assembly
why : the brake assemblies are intentionally allowed to get heated during burnishing. this allows th
e braking materials to cure
Refer to the figure ( pg. 67 ) : the internal spring in the wheel cylinder is left out during a brake r
ebuild. Which of the following would be the most likely result?
a. air would be allowed in the brake fluid
b. the brake would drag
c. the brake would not apply
d. the brake would overheat CORRECT ANSWER A : air would be allowed in the brake fluid
why : if the spring was missing the cups could pull away from the walls and allow air into the syst
em
Which of the following is true concerning master cylinder pushrod adjustment?
a. there should be a slight gap between the pushrod and master cylinder piston
b. it should be adjusted until the piston is pushed in slightly
c. it should keep a slight pressure in the hydraulic system
,d. it should be adjusted at each brake pad replacement CORRECT ANSWER
A : there should be a slight gap between the pushrod and master cylinder piston
why : a slight gap should be present between the pushrod and master cylinder. this will leave the
compensating port open and allow for fluid expansion
Vacuum assist from the brake booster is present with the engine running but not present after the
vehicle's engine is shut off. which of the following could cause this condition?
a. a faulty vacuum check valve
b. a faulty vacuum booster hose
c. low manifold vacuum
d. a leaking intake manifold CORRECT ANSWER A : a faulty vacuum check valve
why : it could cause no vacuum stored in the brake booster after the engine is shut off
Tech A says an analog wheel speed sensor generates a square wave output signal. Tech B says a di
gital wheel speed sensor generates an ac signal. Who is correct?
a. A
b. B
c. A & B
d. neither CORRECT ANSWER D : neither
why : neither tech is correct. an analog wheel speed sensor generates an ac waveform, and a digit
al wheel speed sensor generates a dc waveform
Tech A says if a vehicle has a floating rear disc brake caliper the parking brake actuation mechanis
m will be inside the caliper piston. Tech B says if a vehicle has a fixed rear disc brake caliper the p
arking brake may be inside the disc brake rotor. Who is correct?
, a. A only
b. B only
c. both
d. neither CORRECT ANSWER C : both
why : the techs are correct, a floating rear caliper can use a parking brake system which has the
mechanism in the caliper piston. a fixed caliper will have the parking brake in the hat of the rotor
After a brake application, the inlet pressure gauge in the figure above drops to normal; however, t
he outlet pressure gauge remains higher than normal. Tech A says a faulty disc brake caliper could
be the cause. Tech B says a faulty wheel cylinder could be the cause. Who is correct? ( pg. 68 )
a. A
b. B
c. both
d. neither CORRECT ANSWER D : neither
why : a restricted combination valve could be the cause
The minimum rotor thickness specification is 1.250" (31.75mm). which of the following measureme
nts would indicate the rotor is reusable?
a. 1.115" (28.32 mm)
b. 1.125" (28.57 mm)
c. 1.225" (31.11 mm)
d. 1.520" (38.61 mm) CORRECT ANSWER D : 1.520" (38.61 mm)
why : this measurement is greater than specification, indicating the rotor is not worn too thin. this
specification is for minimum thickness
