ASE A5 Exam: Questions & Answers (Brakes)
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 - ANSWER:A : heat the brake assembly
why : the brake assemblies are intentionally allowed to get heated during burnishing. this allows the
braking materials to cure
Refer to the figure ( pg. 67 ) : the internal spring in the wheel cylinder is left out during a brake rebuild.
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 - 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 system
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 - 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 - 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 digital
wheel speed sensor generates an ac signal. Who is correct?
a. A
b. B
c. A & B
d. neither - ANSWER:D : neither
why : neither tech is correct. an analog wheel speed sensor generates an ac waveform, and a digital
wheel speed sensor generates a dc waveform
Tech A says if a vehicle has a floating rear disc brake caliper the parking brake actuation mechanism will
be inside the caliper piston. Tech B says if a vehicle has a fixed rear disc brake caliper the parking brake
may be inside the disc brake rotor. Who is correct?
a. A only
b. B only
c. both
d. neither - 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
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 - ANSWER:A : heat the brake assembly
why : the brake assemblies are intentionally allowed to get heated during burnishing. this allows the
braking materials to cure
Refer to the figure ( pg. 67 ) : the internal spring in the wheel cylinder is left out during a brake rebuild.
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 - 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 system
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 - 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 - 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 digital
wheel speed sensor generates an ac signal. Who is correct?
a. A
b. B
c. A & B
d. neither - ANSWER:D : neither
why : neither tech is correct. an analog wheel speed sensor generates an ac waveform, and a digital
wheel speed sensor generates a dc waveform
Tech A says if a vehicle has a floating rear disc brake caliper the parking brake actuation mechanism will
be inside the caliper piston. Tech B says if a vehicle has a fixed rear disc brake caliper the parking brake
may be inside the disc brake rotor. Who is correct?
a. A only
b. B only
c. both
d. neither - 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
