SOS Brake & Braking System Exam
Questions And Answers Latest Update
2024/2025 Graded A+.
In a single anchor bendix drum type rear brake - Answer the secondary lining is longer
than the primary
Compared to the secondary shoe lining areas of drum brakes, the primary shoe lining
area is: - Answer smaller and goes toward the front of the car
During a brake overhaul, you notice that the brake fluid seems to be very dirty and dark in
color. What should you do? - Answer flush the system before the new parts are installed
In order to bleed the system on a vehicle equipped with power brakes: - Answer None of
the above
Which of the following could be a symptom of over-torqued lug nuts? - Answer A brake
pedal pulsation during braking.
Which of the following describes the proper sequence to bleed brake lines on most rear
wheel drive vehicles: - Answer RR, LR, RF, LF
In disc brake caliper assemblies, the "square cut seal" is usually located: - Answer In the
caliper piston bore
When performing a caliper overhaul, what would you use to remove the pistons from the
calipers? - Answer Compressed air
Sliding caliper disc brake pads are kept in adjustment by the - Answer Square cut piston
seal
A cracked or torn vacuum diaphragm in a power booster would likely cause: - Answer
Hard pedal with very high effort required
When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating
movement is felt. What can cause this problem? - Answer A rotor thickness variation
While test driving a car, the mechanic finds that the right front brake "grabs". The most
likely cause of this problem is: - Answer Brake fluid or grease on the brake linings.
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? - Answer A leaking
master cylinder primary piston seal.
A rattle is a single piston disc brake assembly which goes away when the brakes are
, applied is most likely a result of: - Answer Loose pads in the caliper
Which of the following would most likely cause dragging brakes? - Answer A defective
vehicle load sensor
With the car standing still, you can hear a squeaking noise when applying the brake pedal
slowly. What could cause this noise? - Answer Dry backing plate contact surfaces.
There is a scraping sound coming from one rear brake. The sound stops when the brakes
are applied. What is the likely cause of the problem? - Answer A broken shoe hold-down
spring or pin
If a drum brake self-adjuster seizes up, the likely result will be: - Answer A low pedal
Which of the following can be used to check for rotor thickness variation? - Answer Dial
indicator
On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking.
The most likely cause is: - Answer A defective proportioning valve
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? - Answer Replace the hub
When adjusting disc-drum brakes, you should: - Answer Adjust the rear brakes after
releasing the parking brakes
What type of rotor surface provides the best braking with new pads? - Answer A smooth,
flat surface
Which of the following is a quick way to determine whether the master cylinder is bad?
There are no external leaks in the system. - Answer Pump up the brake pedal, then hold it
firm. If the pedal slowly drops to the floor, the master cylinder is bad.
You are rebuilding a master cylinder. What should you use to lubricate the internal parts?
- Answer Brake fluid
Which of the following is the most likely cause of low fluid level in the master cylinder? -
Answer Worn brake pads and linings
Questions And Answers Latest Update
2024/2025 Graded A+.
In a single anchor bendix drum type rear brake - Answer the secondary lining is longer
than the primary
Compared to the secondary shoe lining areas of drum brakes, the primary shoe lining
area is: - Answer smaller and goes toward the front of the car
During a brake overhaul, you notice that the brake fluid seems to be very dirty and dark in
color. What should you do? - Answer flush the system before the new parts are installed
In order to bleed the system on a vehicle equipped with power brakes: - Answer None of
the above
Which of the following could be a symptom of over-torqued lug nuts? - Answer A brake
pedal pulsation during braking.
Which of the following describes the proper sequence to bleed brake lines on most rear
wheel drive vehicles: - Answer RR, LR, RF, LF
In disc brake caliper assemblies, the "square cut seal" is usually located: - Answer In the
caliper piston bore
When performing a caliper overhaul, what would you use to remove the pistons from the
calipers? - Answer Compressed air
Sliding caliper disc brake pads are kept in adjustment by the - Answer Square cut piston
seal
A cracked or torn vacuum diaphragm in a power booster would likely cause: - Answer
Hard pedal with very high effort required
When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating
movement is felt. What can cause this problem? - Answer A rotor thickness variation
While test driving a car, the mechanic finds that the right front brake "grabs". The most
likely cause of this problem is: - Answer Brake fluid or grease on the brake linings.
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? - Answer A leaking
master cylinder primary piston seal.
A rattle is a single piston disc brake assembly which goes away when the brakes are
, applied is most likely a result of: - Answer Loose pads in the caliper
Which of the following would most likely cause dragging brakes? - Answer A defective
vehicle load sensor
With the car standing still, you can hear a squeaking noise when applying the brake pedal
slowly. What could cause this noise? - Answer Dry backing plate contact surfaces.
There is a scraping sound coming from one rear brake. The sound stops when the brakes
are applied. What is the likely cause of the problem? - Answer A broken shoe hold-down
spring or pin
If a drum brake self-adjuster seizes up, the likely result will be: - Answer A low pedal
Which of the following can be used to check for rotor thickness variation? - Answer Dial
indicator
On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking.
The most likely cause is: - Answer A defective proportioning valve
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? - Answer Replace the hub
When adjusting disc-drum brakes, you should: - Answer Adjust the rear brakes after
releasing the parking brakes
What type of rotor surface provides the best braking with new pads? - Answer A smooth,
flat surface
Which of the following is a quick way to determine whether the master cylinder is bad?
There are no external leaks in the system. - Answer Pump up the brake pedal, then hold it
firm. If the pedal slowly drops to the floor, the master cylinder is bad.
You are rebuilding a master cylinder. What should you use to lubricate the internal parts?
- Answer Brake fluid
Which of the following is the most likely cause of low fluid level in the master cylinder? -
Answer Worn brake pads and linings
