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ASE questions - Brake System Exam – Questions with Solutions
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ASE questions - Brake SystemExam – Questions with Solutions
The brake pedal on a vehicle with power-assisted disc/drum brakes moves
slowly to the floor during braking. Which could be the cause? - -A Leaking
Master Cylinder Primary Cup
-On a vehicle with disc/drum brakes, the front brakes grab quickly when
light
pedal pressure is applied. This could be caused by a bad: - -Metering Valve
-On a vehicle with single piston, floating caliper disc brakes, the disc brake
pad
between the caliper piston and the rotor is badly worn. The other brake pad
is
only slightly worn.
Technician A says that too much rotor runout could be the cause.
Technician B says that a frozen caliper piston could be the cause.
Who is right? - -Neither A nor B
-When the brakes are applied, a vibration comes from the front of a vehicle
with
a disc/drum system. Which could be the cause - -Excessive Rotor Runout
-A front disc brake rotor is slightly below minimum thickness specification
after
machining. The technician should: - -Replace The Rotor
-A hydraulic brake line is leaking. Which is the correct repair? - -Replace the
leaking line double flared steel tubing
-The drag on a vehicle's drum brakes increases after each application until
they lockup. Bleeding the system restores normal operation for a short time;
then drag increases until the brakes lockup again. Which could be the
cause? - -A Blocked Compensating Port
-With the brakes applied, the pedal moves down slightly when the engine is
started on a vehicle with power brakes.
Technician A says that the cause could be a leaking power brake booster
diaphragm.
Technician B says that the cause could be a stuck closed check valve on the
power brake booster manifold.
Who is right? - -Neither A nor B
, -What are the major components of the brake system? - -disc brakes
brake pads
calipers
rotors
drum brakes
drums
shoes
drum hardware
wheel cylinders
master cylinder
pressure differential valve
proportioning valve
brake fluid
brake hoses and lines
anti-lock brake system (ABS)
-What are disc brakes? - -brakes that use a pair of friction pads to squeeze
against a flat disc or rotor when the brakes are applied
-What are brake pads? - -the friction linings used with disc brake systems
-What are calipers? - -parts that, in disc brake systems, are used to squeeze
the brake pads against the rotors when brakes are applied
-What is the purpose/function of calipers? - -to squeeze the brake pads
against the rotors when the brakes are applied
-What are rotors? - -discs that are either solid or vented and which cause
the vehicle to stop based on the friction between them and the brake pads
-What are drum brakes? - -a type of brake system that uses a cylindrical
drum as the friction surface for a pair of brake shoes
-What are shoes? - -the friction linings inside a brake drum
-What is the purpose/function of shoes? - -to squeeze outward against the
inside of the drum to apply the brakes
-What is drum hardware? - -return springs
hold down springs
self-adjusters
cables, clips, or springs
-What is the purpose/function of return springs? - -to pull the shoes back
away from the drum when the brakes are released
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