SOS MECHANIC CERTIFICATION FINAL
EXAM SCRIPT 2026 COMPLETE QUESTIONS
AND CORRECT ANSWERS GRADED A+
●● to test a vacuum power brake booster in the vehicle, you should
pump the brake pedal at least 4 times, hold the brake pedal depressed,
and start the engine. the brake pedal should:
Answer: drop slightly and remain firm
●● You are installing a set of brake shoe linings that are not the same
length. Traditionally, the primary shoe lining is:
Answer: Smaller and goes towards the front of the car.
●● A cracked or torn vacuum diaphragm in a brake power booster would
most likely cause:
Answer: a hard pedal feel requiring very high pedal effort to stop
●● A mechanic finds gear lube inside both rear brake drums on a rear
wheel drive vehicle. What is the most likely cause of this problem?
Answer: A plugged axle
●● Which of the following incorrect service procedures will cause brake
lock-up?
, Answer: master cylinder push rod adjusted too long
●● Which of the following describes the proper way to depressurized an
ABS system?
Answer: Pump the brake pedal at least 25 times (or more, depending on
the manufacturer's recommendation) with the ignition off.
●● The rear brakes are dragging after having new linings installed and
the drums machined. the most likely cause is the:
Answer: technician use the parking brake to adjust shoes and the cable is
stuck
●● When turning brake drums:
Answer: use a dampening strap to reduce chatter
●● Which of the following is NOT a necessary drum brake
measurement?
Answer: run-out
●● On a 3-channel system, which wheels are on the same circuit?
Answer: both rear wheels
●● One way to test an ABS wheel speed signal is to use _____ on your
digital multimeter.
EXAM SCRIPT 2026 COMPLETE QUESTIONS
AND CORRECT ANSWERS GRADED A+
●● to test a vacuum power brake booster in the vehicle, you should
pump the brake pedal at least 4 times, hold the brake pedal depressed,
and start the engine. the brake pedal should:
Answer: drop slightly and remain firm
●● You are installing a set of brake shoe linings that are not the same
length. Traditionally, the primary shoe lining is:
Answer: Smaller and goes towards the front of the car.
●● A cracked or torn vacuum diaphragm in a brake power booster would
most likely cause:
Answer: a hard pedal feel requiring very high pedal effort to stop
●● A mechanic finds gear lube inside both rear brake drums on a rear
wheel drive vehicle. What is the most likely cause of this problem?
Answer: A plugged axle
●● Which of the following incorrect service procedures will cause brake
lock-up?
, Answer: master cylinder push rod adjusted too long
●● Which of the following describes the proper way to depressurized an
ABS system?
Answer: Pump the brake pedal at least 25 times (or more, depending on
the manufacturer's recommendation) with the ignition off.
●● The rear brakes are dragging after having new linings installed and
the drums machined. the most likely cause is the:
Answer: technician use the parking brake to adjust shoes and the cable is
stuck
●● When turning brake drums:
Answer: use a dampening strap to reduce chatter
●● Which of the following is NOT a necessary drum brake
measurement?
Answer: run-out
●● On a 3-channel system, which wheels are on the same circuit?
Answer: both rear wheels
●● One way to test an ABS wheel speed signal is to use _____ on your
digital multimeter.
