SOS MECHANIC PRACTICE TEST 2026
COMPLETE QUESTIONS AND ANSWERS
◉ Which lining does most of the braking on a leading/trailing brake?
Answer: primary shoe
◉ This tool is used to? Answer: Adjust the brake shoes to the drum
◉ 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
, ◉ 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
◉ 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
◉ 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
◉ 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
COMPLETE QUESTIONS AND ANSWERS
◉ Which lining does most of the braking on a leading/trailing brake?
Answer: primary shoe
◉ This tool is used to? Answer: Adjust the brake shoes to the drum
◉ 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
, ◉ 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
◉ 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
◉ 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
◉ 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
