SOS MECHANIC CERTIFICATION- BRAKES EXAM 2026|2027 UPDATED
QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%) | ALREADY
GRADED A+
When adjusting disc-drum brakes, you should: - CORRECT ANSWER -Adjust the rear brakes after releasing
the parking brakes
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
Which of the following describes the correct sequence for bleeding brake lines on most front wheel drive
vehicles? - CORRECT ANSWER -RR,LR, RF, LF
All of the following are steps in the procedure for servicing a typical dual master cylinder, EXCEPT: -
CORRECT ANSWER -Clean the master cylinder with a degreasing solvent
1|Page
, The brakes of a car tend to drag, which of the following could be the cause? - CORRECT ANSWER -A stuck
wheel cylinder or caliper piston
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
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
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
2|Page
QUESTIONS WITH DETAILED VERIFIED ANSWERS (100%) | ALREADY
GRADED A+
When adjusting disc-drum brakes, you should: - CORRECT ANSWER -Adjust the rear brakes after releasing
the parking brakes
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
Which of the following describes the correct sequence for bleeding brake lines on most front wheel drive
vehicles? - CORRECT ANSWER -RR,LR, RF, LF
All of the following are steps in the procedure for servicing a typical dual master cylinder, EXCEPT: -
CORRECT ANSWER -Clean the master cylinder with a degreasing solvent
1|Page
, The brakes of a car tend to drag, which of the following could be the cause? - CORRECT ANSWER -A stuck
wheel cylinder or caliper piston
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
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
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
2|Page
