SOS MECHANIC CERTIFICATION- BRAKES
EXAM | COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS | LATEST
UPDATE (2026) | ALREADY GRADED A+
Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive
wheel? - CORRECT ANSWER -Sealed non-serviceable
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
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.
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
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
Which of the following incorrect service procedures will cause brake lock-up? - CORRECT
ANSWER -master cylinder push rod adjusted too long
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.
, 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
When turning brake drums: - CORRECT ANSWER -use a dampening strap to reduce chatter
Which of the following is NOT a necessary drum brake measurement? - CORRECT ANSWER -run-
out
On a 3-channel system, which wheels are on the same circuit? - CORRECT ANSWER -both rear
wheels
One way to test an ABS wheel speed signal is to use _____ on your digital multimeter. -
CORRECT ANSWER -AC volts
The key input for the ABS control module comes from the: - CORRECT ANSWER -wheel speed
sensors
ABS speed sensor and sensor rings: - CORRECT ANSWER -should not be hammered or tapped on
and should always be replaced as a matched set
Flexible brake hoses should be replaced: - CORRECT ANSWER -when dampness is evident on the
hose
Which of the following should be used to check for rotor thickness variation: - CORRECT
ANSWER -Micrometer
After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
CORRECT ANSWER -adjusted properly
EXAM | COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS | LATEST
UPDATE (2026) | ALREADY GRADED A+
Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive
wheel? - CORRECT ANSWER -Sealed non-serviceable
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
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.
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
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
Which of the following incorrect service procedures will cause brake lock-up? - CORRECT
ANSWER -master cylinder push rod adjusted too long
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.
, 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
When turning brake drums: - CORRECT ANSWER -use a dampening strap to reduce chatter
Which of the following is NOT a necessary drum brake measurement? - CORRECT ANSWER -run-
out
On a 3-channel system, which wheels are on the same circuit? - CORRECT ANSWER -both rear
wheels
One way to test an ABS wheel speed signal is to use _____ on your digital multimeter. -
CORRECT ANSWER -AC volts
The key input for the ABS control module comes from the: - CORRECT ANSWER -wheel speed
sensors
ABS speed sensor and sensor rings: - CORRECT ANSWER -should not be hammered or tapped on
and should always be replaced as a matched set
Flexible brake hoses should be replaced: - CORRECT ANSWER -when dampness is evident on the
hose
Which of the following should be used to check for rotor thickness variation: - CORRECT
ANSWER -Micrometer
After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
CORRECT ANSWER -adjusted properly
