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SOS brake & braking system Questions and correct answers | already graded a+ | verified answers
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SOS brake & braking systemIn a single anchor bendix drum type rear brake - correct 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: - correct 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? - correct answer-flush the system before the new parts are
installed
In order to bleed the system on a vehicle equipped with power brakes: - correct
answer-None of the above
Which of the following could be a symptom of over-torqued lug nuts? - correct 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: - correct answer-RR, LR, RF, LF
In disc brake caliper assemblies, the "square cut seal" is usually located: - correct answer-In
the caliper piston bore
When performing a caliper overhaul, what would you use to remove the pistons from the
calipers? - correct answer-Compressed air
Sliding caliper disc brake pads are kept in adjustment by the - correct answer-Square cut
piston seal
A cracked or torn vacuum diaphragm in a power booster would likely cause: - correct
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? - correct 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: - correct 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? - correct 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: - correct answer-Loose pads in the caliper
, Which of the following would most likely cause dragging brakes? - correct 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? - correct 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? - correct answer-A broken shoe
hold-down spring or pin
If a drum brake self-adjuster seizes up, the likely result will be: - correct answer-A low pedal
Which of the following can be used to check for rotor thickness variation? - correct
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: - correct 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? - correct answer-Replace the hub
When adjusting disc-drum brakes, you should: - correct answer-Adjust the rear brakes after
releasing the parking brakes
What type of rotor surface provides the best braking with new pads? - correct 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. - correct 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? -
correct answer-Brake fluid
Which of the following is the most likely cause of low fluid level in the master cylinder? -
correct answer-Worn brake pads and linings
After drum brakes have been applied and released, the brake fluid returns to the master
cylinder reservoir. What causes it to return? - correct answer-Brake shoe return springs
Which of the following describes the correct sequence for bleeding brake lines on most front
wheel drive vehicles? - correct answer-RR,LR, RF, LF
Technician A says that excessive pedal travel can be caused by low brake fluid levels;
Technician B says that the excessive pedal travel can be caused by air in the hydraulic
system? Who is right? - correct answer-Both A and B
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