Question and Answers, A+ Guaranteed
Success
car equipped with a vacuum assist power brake system reads an abnormal amount of pedal effort to
stop the car, which of the following could be the cause? -CORRECT ANSWERS-A plugged booster air
breather
A car has a spongy pedal. Which of the following could be the cause? -CORRECT ANSWERS-Air in the
system.
A car has an excessive amount of pedal travel during brake application, which of he following could be
the cause? -CORRECT ANSWERS-Excessive clearance between the shoes and drum.
A car's wheels severely vibrate when the brakes are applied, which of the following is the LEAST likely
source of he problem? -CORRECT ANSWERS-The master cylinder
A common cause of pedal pulsation during brake application is: -CORRECT ANSWERS-NOT caused by
improperly torqued wheels, damaged backing plates, or lubricated shims
A cracked or torn vacuum diaphragm in a brake power booster would most likely cause: -CORRECT
ANSWERS-a hard pedal feel requiring very high pedal effort to stop
A customer complains that the brake pedal slowly moves to the floor when a steady pressure is applied.
There is no sign of fluid leakage. Which of the following is the most portable cause of the problem? -
CORRECT ANSWERS-A worn primary cup
A mechanic finds gear lube inside both rear brake drums on a rear wheel drive vehicle. What is the most
likely cause of this problem? -CORRECT ANSWERS-A plugged axle
A properly functioning load sensing proportioning valve will: -CORRECT ANSWERS-cause an increase in
the hydraulic pressure during braking at the rear wheel cylinders when the vehicle is loaded.
A rattle is a single piston disc brake assembly which goes away when the brakes are applied is most
likely a result of: -CORRECT ANSWERS-Loose pads in the caliper
ABS speed sensor and sensor rings: -CORRECT ANSWERS-should not be hammered or tapped on and
should always be replaced as a matched set
After drum brakes have been applied and released, the brake fluid returns to the master cylinder
reservoir. What causes it to return? -CORRECT ANSWERS-brake shoe return springs
After putting a bearing race in a hub, you notice that the new race is loose and can spin in the hub. What
should you do? -CORRECT ANSWERS-Replace the hub
, After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
CORRECT ANSWERS-adjusted properly
All of the following are steps in the procedure for servicing a typical dual master cylinder, EXCEPT: -
CORRECT ANSWERS-Clean the master cylinder with a degreasing solvent
All of the following procedures, EXCEPT one describe the correct method for bleeding the individual
brakes on a car after the master cylinder has been bled: -CORRECT ANSWERS-The bleeding sequence for
all systems begins with the left rear wheel.
All of the following, EXCEPT one could cause the parking brakes to fail or not hold: -CORRECT ANSWERS-
Air in the system
An example of an incorrect procedure for replacing brake pads in a disc brake system is: -CORRECT
ANSWERS-Remove the piston from the caliper and clean all rust corrosion, and dirt
Before replacing a hydralic brake hose on an ABS equipped vehicle, you should first: -CORRECT
ANSWERS-relieve brake system pressure according to manufacturer procedures
During a road test, you find that when normal breaking pressure is applied the pedal slowly goes to the
floor. What is the likely cause of this problem? -CORRECT ANSWERS-A leaking master cylinder primary
piston seal.
Flexible brake hoses should be replaced: -CORRECT ANSWERS-when dampness is evident on the hose
If a drum brake self-adjuster seizes up, the likely result will be: -CORRECT ANSWERS-NOT a low pedal,
worn or brake drum, or a loose emergency brake cable.
If vacuum is present on both sides of the diaphragm in a brake booster: -CORRECT ANSWERS-The brakes
are being released
In disc brake caliper assemblies, the "square cut seal" is usually located: -CORRECT ANSWERS-In the
caliper piston bore
Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive wheel? -
CORRECT ANSWERS-Sealed non-serviceable
Most anti-lock brake systems require the removal of the pressure modulator fuse when: -CORRECT
ANSWERS-a "spaced-saver" spare tire is being used and mismatched tires are being installed
On a 3-channel system, which wheels are on the same circuit? -CORRECT ANSWERS-both rear wheels
On a single anchor duo-servo drum brake system, which shoe does most of the braking? -CORRECT
ANSWERS-secondary shoe
On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The most likely
cause is: -CORRECT ANSWERS-A defective proportioning valve
One way to test an ABS wheel speed signal is to use _____ on your digital multimeter. -CORRECT
ANSWERS-AC volts
Sliding caliper disc brake pads are kept in adjustment by the -CORRECT ANSWERS-Square cut piston seal