SOS Mechanic Certification- Brakes Latest Update Questions
with Verified Answers
A 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
with Verified Answers
A 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
