SOS MECHANIC CERTIFICATION-
BRAKES EXAM QUESTIONS AND
CORRECT ANSWERS. VERIFIED
2025/2026.
Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive
wheel? - ANS 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: -
ANS 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: - ANS Smaller and goes towards the front of the car.
A cracked or torn vacuum diaphragm in a brake power booster would most likely cause: -
ANS 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? - ANS A plugged axle
Which of the following incorrect service procedures will cause brake lock-up? - ANS master
cylinder push rod adjusted too long
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Which of the following describes the proper way to depressurized an ABS system? -
ANS 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: - ANS technician use the parking brake to adjust shoes and the cable
is stuck
When turning brake drums: - ANS use a dampening strap to reduce chatter
Which of the following is NOT a necessary drum brake measurement? - ANS run-out
On a 3-channel system, which wheels are on the same circuit? - ANS both rear wheels
One way to test an ABS wheel speed signal is to use _____ on your digital multimeter. -
ANS AC volts
The key input for the ABS control module comes from the: - ANS wheel speed sensors
ABS speed sensor and sensor rings: - ANS should not be hammered or tapped on and should
always be replaced as a matched set
Flexible brake hoses should be replaced: - ANS when dampness is evident on the hose
Which of the following should be used to check for rotor thickness variation: -
ANS Micrometer
After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
ANS adjusted properly
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
BRAKES EXAM QUESTIONS AND
CORRECT ANSWERS. VERIFIED
2025/2026.
Most 1995 & newer vehicles use which of the following types of wheels bearings on non-drive
wheel? - ANS 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: -
ANS 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: - ANS Smaller and goes towards the front of the car.
A cracked or torn vacuum diaphragm in a brake power booster would most likely cause: -
ANS 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? - ANS A plugged axle
Which of the following incorrect service procedures will cause brake lock-up? - ANS master
cylinder push rod adjusted too long
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Which of the following describes the proper way to depressurized an ABS system? -
ANS 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: - ANS technician use the parking brake to adjust shoes and the cable
is stuck
When turning brake drums: - ANS use a dampening strap to reduce chatter
Which of the following is NOT a necessary drum brake measurement? - ANS run-out
On a 3-channel system, which wheels are on the same circuit? - ANS both rear wheels
One way to test an ABS wheel speed signal is to use _____ on your digital multimeter. -
ANS AC volts
The key input for the ABS control module comes from the: - ANS wheel speed sensors
ABS speed sensor and sensor rings: - ANS should not be hammered or tapped on and should
always be replaced as a matched set
Flexible brake hoses should be replaced: - ANS when dampness is evident on the hose
Which of the following should be used to check for rotor thickness variation: -
ANS Micrometer
After rebuilding a master cylinder, the rod between the master cylinder and booster should be: -
ANS adjusted properly
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
