SOS BRAKE & BRAKING SYSTEM
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
After drum brakes have been applied and released, the brake fluid returns to the
master cylinder reservoir. What causes it to return? - Answer- Brake shoe return
springs
Which of the following describes the correct sequence for bleeding brake lines on
most front wheel drive vehicles? - 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? - Answer- Both A and B
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
After drum brakes have been applied and released, the brake fluid returns to the
master cylinder reservoir. What causes it to return? - Answer- Brake shoe return
springs
Which of the following describes the correct sequence for bleeding brake lines on
most front wheel drive vehicles? - 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? - Answer- Both A and B
