SOS MECHANIC CERTIFICATION -BRAKE
EXAM 2025-2026 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTION|ALREADY
GRADED A+|NEWEST|BRAND NEW
VERSION!!|GUARANTEED PASS
When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating movement
is felt. What can cause this problem?
A rotor thickness variation
A rattle is a single piston disc brake assembly which goes away when the brakes are applied is
most likely a result of:
Loose pads in the caliper
Which of the following would most likely cause dragging brakes?
A defective vehicle load sensor
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?
A broken shoe hold-down spring or pin
Which of the following can be used to check for rotor thickness variation?
Dial indicator
On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The
most likely cause is:
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?
1|Page
,Replace the hub
When adjusting disc-drum brakes, you should:
Adjust the rear brakes after releasing the parking brakes
You are rebuilding a master cylinder. What should you use to lubricate the internal parts?
Brake fluid
Which of the following is the most likely cause of low fluid level in the master cylinder?
Worn brake pads and linings
Which of the following describes the correct sequence for bleeding brake lines on most front
wheel drive vehicles?
RR,LR, RF, LF
All of the following are steps in the procedure for servicing a typical dual master cylinder,
EXCEPT:
Clean the master cylinder with a degreasing solvent
The brakes of a car tend to drag, which of the following could be the cause?
A stuck wheel cylinder or caliper piston
When repairing damaged brake line, which of the following is correct?
Replace entire line that is damaged with a new line bent to the right shape using a tube bender
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?
A worn primary cup
A car has an excessive amount of pedal travel during brake application, which of he following
could be the cause?
Excessive clearance between the shoes and drum.
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:
The bleeding sequence for all systems begins with the left rear wheel.
Which of the following is the LEAST likely cause of one brake dragging?
2|Page
, A corroded master cylinder bore
A car has a spongy pedal. Which of the following could be the cause?
Air in the system.
Which of the following is not correct in the procedure for preparing a brake rotor for matching?
Use a brake micrometer to measure the diameter
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?
A plugged booster air breather
All of the following, EXCEPT one could cause the parking brakes to fail or not hold:
Air in the system
An example of an incorrect procedure for replacing brake pads in a disc brake system is:
Remove the piston from the caliper and clean all rust corrosion, and dirt
A car's wheels severely vibrate when the brakes are applied, which of the following is the LEAST
likely source of he problem?
The master cylinder
If vacuum is present on both sides of the diaphragm in a brake booster:
The brakes are being released
Which of the following is not a necessary precaution to follow when performing brake repairs
on an ABS equipped vehicle?
Always remove the electronic brake control module fuse before adjusting or replacing a wheel
speed sensor
Which of the following is true when inspecting wheel speed sensors?
You should measure the air gap between the sensor and the reluctor wheel teeth
Which of the following would be the result of an inoperative ABS pump/motor assembly:
Conventional braking should still be available
What information might be found on a brake drum to help a mechanic?
The maximum diameter dimension
3|Page
EXAM 2025-2026 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTION|ALREADY
GRADED A+|NEWEST|BRAND NEW
VERSION!!|GUARANTEED PASS
When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating movement
is felt. What can cause this problem?
A rotor thickness variation
A rattle is a single piston disc brake assembly which goes away when the brakes are applied is
most likely a result of:
Loose pads in the caliper
Which of the following would most likely cause dragging brakes?
A defective vehicle load sensor
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?
A broken shoe hold-down spring or pin
Which of the following can be used to check for rotor thickness variation?
Dial indicator
On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The
most likely cause is:
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?
1|Page
,Replace the hub
When adjusting disc-drum brakes, you should:
Adjust the rear brakes after releasing the parking brakes
You are rebuilding a master cylinder. What should you use to lubricate the internal parts?
Brake fluid
Which of the following is the most likely cause of low fluid level in the master cylinder?
Worn brake pads and linings
Which of the following describes the correct sequence for bleeding brake lines on most front
wheel drive vehicles?
RR,LR, RF, LF
All of the following are steps in the procedure for servicing a typical dual master cylinder,
EXCEPT:
Clean the master cylinder with a degreasing solvent
The brakes of a car tend to drag, which of the following could be the cause?
A stuck wheel cylinder or caliper piston
When repairing damaged brake line, which of the following is correct?
Replace entire line that is damaged with a new line bent to the right shape using a tube bender
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?
A worn primary cup
A car has an excessive amount of pedal travel during brake application, which of he following
could be the cause?
Excessive clearance between the shoes and drum.
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:
The bleeding sequence for all systems begins with the left rear wheel.
Which of the following is the LEAST likely cause of one brake dragging?
2|Page
, A corroded master cylinder bore
A car has a spongy pedal. Which of the following could be the cause?
Air in the system.
Which of the following is not correct in the procedure for preparing a brake rotor for matching?
Use a brake micrometer to measure the diameter
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?
A plugged booster air breather
All of the following, EXCEPT one could cause the parking brakes to fail or not hold:
Air in the system
An example of an incorrect procedure for replacing brake pads in a disc brake system is:
Remove the piston from the caliper and clean all rust corrosion, and dirt
A car's wheels severely vibrate when the brakes are applied, which of the following is the LEAST
likely source of he problem?
The master cylinder
If vacuum is present on both sides of the diaphragm in a brake booster:
The brakes are being released
Which of the following is not a necessary precaution to follow when performing brake repairs
on an ABS equipped vehicle?
Always remove the electronic brake control module fuse before adjusting or replacing a wheel
speed sensor
Which of the following is true when inspecting wheel speed sensors?
You should measure the air gap between the sensor and the reluctor wheel teeth
Which of the following would be the result of an inoperative ABS pump/motor assembly:
Conventional braking should still be available
What information might be found on a brake drum to help a mechanic?
The maximum diameter dimension
3|Page
