2026 GRADED A+ EXAM
SOS Mechanic Certification- Brakes Exam ACTUAL QUESTIONS AND
WELL REVISED ANSWERS - LATEST AND COMPLETE UPDATE WITH
VERIFIED SOLUTIONS 2026
Most 1995 & newer vehicles use which of the following types of wheels
bearings on non-drive wheel? - CORRECT ANSWER Sealed non-
serviceable
QUESTION :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: - CORRECT
ANSWER drop slightly and remain firm
QUESTION :You are installing a set of brake shoe linings that are not the
same length. Traditionally, the primary shoe lining is: - CORRECT
ANSWER Smaller and goes towards the front of the car.
QUESTION :A cracked or torn vacuum diaphragm in a brake power
booster would most likely cause: - CORRECT ANSWER a hard pedal
feel requiring very high pedal effort to stop
QUESTION :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? -
CORRECT ANSWER A plugged axle
QUESTION :Which of the following incorrect service procedures will cause
brake lock-up? - CORRECT ANSWER master cylinder push rod
adjusted too long
QUESTION :Which of the following describes the proper way to
depressurized an ABS system? - CORRECT ANSWER Pump the
brake pedal at least 25 times (or more, depending on the manufacturer's
recommendation) with the ignition off.
, 2026 GRADED A+ EXAM
QUESTION :The rear brakes are dragging after having new linings
installed and the drums machined. the most likely cause is the: -
CORRECT ANSWER technician use the parking brake to adjust
shoes and the cable is stuck
QUESTION :When turning brake drums: - CORRECT ANSWER use
a dampening strap to reduce chatter
QUESTION :Which of the following is NOT a necessary drum brake
measurement? - CORRECT ANSWER run-out
QUESTION :On a 3-channel system, which wheels are on the same
circuit? - CORRECT ANSWER both rear wheels
QUESTION :One way to test an ABS wheel speed signal is to use _____
on your digital multimeter. - CORRECT ANSWER AC volts
QUESTION :The key input for the ABS control module comes from the: -
CORRECT ANSWER wheel speed sensors
QUESTION :ABS speed sensor and sensor rings: - CORRECT
ANSWER should not be hammered or tapped on and should always be
replaced as a matched set
QUESTION :Flexible brake hoses should be replaced: - CORRECT
ANSWER when dampness is evident on the hose
QUESTION :Which of the following should be used to check for rotor
thickness variation: - CORRECT ANSWER Micrometer
QUESTION :After rebuilding a master cylinder, the rod between the master
cylinder and booster should be: - CORRECT ANSWER adjusted
properly
QUESTION :Upon inspecting brake fluid condition, the technician
observes the diaphragm in the master cylinder cup is swollen. Which of the
SOS Mechanic Certification- Brakes Exam ACTUAL QUESTIONS AND
WELL REVISED ANSWERS - LATEST AND COMPLETE UPDATE WITH
VERIFIED SOLUTIONS 2026
Most 1995 & newer vehicles use which of the following types of wheels
bearings on non-drive wheel? - CORRECT ANSWER Sealed non-
serviceable
QUESTION :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: - CORRECT
ANSWER drop slightly and remain firm
QUESTION :You are installing a set of brake shoe linings that are not the
same length. Traditionally, the primary shoe lining is: - CORRECT
ANSWER Smaller and goes towards the front of the car.
QUESTION :A cracked or torn vacuum diaphragm in a brake power
booster would most likely cause: - CORRECT ANSWER a hard pedal
feel requiring very high pedal effort to stop
QUESTION :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? -
CORRECT ANSWER A plugged axle
QUESTION :Which of the following incorrect service procedures will cause
brake lock-up? - CORRECT ANSWER master cylinder push rod
adjusted too long
QUESTION :Which of the following describes the proper way to
depressurized an ABS system? - CORRECT ANSWER Pump the
brake pedal at least 25 times (or more, depending on the manufacturer's
recommendation) with the ignition off.
, 2026 GRADED A+ EXAM
QUESTION :The rear brakes are dragging after having new linings
installed and the drums machined. the most likely cause is the: -
CORRECT ANSWER technician use the parking brake to adjust
shoes and the cable is stuck
QUESTION :When turning brake drums: - CORRECT ANSWER use
a dampening strap to reduce chatter
QUESTION :Which of the following is NOT a necessary drum brake
measurement? - CORRECT ANSWER run-out
QUESTION :On a 3-channel system, which wheels are on the same
circuit? - CORRECT ANSWER both rear wheels
QUESTION :One way to test an ABS wheel speed signal is to use _____
on your digital multimeter. - CORRECT ANSWER AC volts
QUESTION :The key input for the ABS control module comes from the: -
CORRECT ANSWER wheel speed sensors
QUESTION :ABS speed sensor and sensor rings: - CORRECT
ANSWER should not be hammered or tapped on and should always be
replaced as a matched set
QUESTION :Flexible brake hoses should be replaced: - CORRECT
ANSWER when dampness is evident on the hose
QUESTION :Which of the following should be used to check for rotor
thickness variation: - CORRECT ANSWER Micrometer
QUESTION :After rebuilding a master cylinder, the rod between the master
cylinder and booster should be: - CORRECT ANSWER adjusted
properly
QUESTION :Upon inspecting brake fluid condition, the technician
observes the diaphragm in the master cylinder cup is swollen. Which of the
