SOS Mechanic Certification- Brakes Exam with correct Answers
Most 1995 & newer vehicles use which of the following types of wheels bearings
on non-drive wheel? - 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: - 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. - ANSWER ✔️✔️AC volts
The key input for the ABS control module comes from the: - ANSWER ✔️✔️wheel
speed sensors
ABS speed sensor and sensor rings: - ANSWER ✔️✔️should not be hammered or
tapped on and should always be replaced as a matched set
Flexible brake hoses should be replaced: - ANSWER ✔️✔️when dampness is
evident on the hose
Which of the following should be used to check for rotor thickness variation: -
ANSWER ✔️✔️Micrometer
After rebuilding a master cylinder, the rod between the master cylinder and booster
should be: - ANSWER ✔️✔️adjusted properly
Upon inspecting brake fluid condition, the technician observes the diaphragm in
the master cylinder cup is swollen. Which of the following is the most likely
cause? - ANSWER ✔️✔️silicone fluid added to the system
When inspecting brake fluid levels, a technician observes low fluid levels. which
of the following should be done first? - ANSWER ✔️✔️Inspect disc brake pads for
excessive wear
Which of the following is true about most properly functioning anti-lock brake
systems? - ANSWER ✔️✔️The brakes may lock up at speeds less than 10 miles per
hour
Which of the following is true about bleeding brake lines on most ABS equipped
vehicles? - ANSWER ✔️✔️Most ABS brake lines can be bled like a conventional
(non-ABS) system. However, caution must be taken because of the extreme
pressure.
Most anti-lock brake systems require the removal of the pressure modulator fuse
when: - ANSWER ✔️✔️a "spaced-saver" spare tire is being used and mismatched
tires are being installed
Most 1995 & newer vehicles use which of the following types of wheels bearings
on non-drive wheel? - 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: - 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. - ANSWER ✔️✔️AC volts
The key input for the ABS control module comes from the: - ANSWER ✔️✔️wheel
speed sensors
ABS speed sensor and sensor rings: - ANSWER ✔️✔️should not be hammered or
tapped on and should always be replaced as a matched set
Flexible brake hoses should be replaced: - ANSWER ✔️✔️when dampness is
evident on the hose
Which of the following should be used to check for rotor thickness variation: -
ANSWER ✔️✔️Micrometer
After rebuilding a master cylinder, the rod between the master cylinder and booster
should be: - ANSWER ✔️✔️adjusted properly
Upon inspecting brake fluid condition, the technician observes the diaphragm in
the master cylinder cup is swollen. Which of the following is the most likely
cause? - ANSWER ✔️✔️silicone fluid added to the system
When inspecting brake fluid levels, a technician observes low fluid levels. which
of the following should be done first? - ANSWER ✔️✔️Inspect disc brake pads for
excessive wear
Which of the following is true about most properly functioning anti-lock brake
systems? - ANSWER ✔️✔️The brakes may lock up at speeds less than 10 miles per
hour
Which of the following is true about bleeding brake lines on most ABS equipped
vehicles? - ANSWER ✔️✔️Most ABS brake lines can be bled like a conventional
(non-ABS) system. However, caution must be taken because of the extreme
pressure.
Most anti-lock brake systems require the removal of the pressure modulator fuse
when: - ANSWER ✔️✔️a "spaced-saver" spare tire is being used and mismatched
tires are being installed
