Exam (elaborations)
SOS brake & braking system Questions and Answers
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SOS brake & braking system
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SOS brake & braking systemIn a single anchor bendix drum type rear brake - answerthe secondary lining is longer
than the primary
Compared to the secondary shoe lining areas of drum brakes, the primary shoe lining
area is: - answersmaller 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? - answerflush the system before the new parts are
installed
In order to bleed the system on a vehicle equipped with power brakes: - answerNone of
the above
Which of the following could be a symptom of over-torqued lug nuts? - answerA brake
pedal pulsation during braking.
Which of the following describes the proper sequence to bleed brake lines on most rear
wheel drive vehicles: - answerRR, LR, RF, LF
In disc brake caliper assemblies, the "square cut seal" is usually located: - answerIn the
caliper piston bore
When performing a caliper overhaul, what would you use to remove the pistons from the
calipers? - answerCompressed air
Sliding caliper disc brake pads are kept in adjustment by the - answerSquare cut piston
seal
A cracked or torn vacuum diaphragm in a power booster would likely cause: -
answerHard 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? - answerA 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: - answerBrake 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? - answerA 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: - answerLoose pads in the caliper
Which of the following would most likely cause dragging brakes? - answerA 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? - answerDry 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? - answerA broken shoe
hold-down spring or pin
If a drum brake self-adjuster seizes up, the likely result will be: - answerA low pedal
Which of the following can be used to check for rotor thickness variation? - answerDial
indicator
On a vehicle with a disc/drum brake system, the rear wheels lock up under hard
braking. The most likely cause is: - answerA 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? - answerReplace the hub
When adjusting disc-drum brakes, you should: - answerAdjust the rear brakes after
releasing the parking brakes
What type of rotor surface provides the best braking with new pads? - answerA 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. - answerPump 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? - answerBrake fluid
Which of the following is the most likely cause of low fluid level in the master cylinder? -
answerWorn 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? - answerBrake shoe return springs
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