ASE T4 Brakes 2026 Exam
Questions and Correct
Answers | New Update
2. The Driver Vehicle Inspection Report DVIR should be submitted :
A. according to the vehicle maintenance schedule
B. when a failure occurs
C. weekly
D. daily - ANSWER ✔✔The correct answer is D. Federal Motor
Vehicle Safety Standards ( FMVSS ) require the driver to submit a DVIR
,to their motor carrier or owner at the end of each day . The DVIR is used
to identify defects or deficiencies that would result in a mechanical
breakdown or effect the safe operation of a vehicle Once a driver
submits the DVIR , a motor carrier or its agent must investigate and
repair the defect or deficiency .
3. Which of the following cannot cause a drum on an air - braked vehicle
to overheat ?
A. an over - tightened brake adjuster at that wheel
B. under - adjusted brake ( s ) elsewhere on the vehicle
C. too - high governor cut - out pressure
D. driving downhill in too high a gear. - ANSWER ✔✔3. The correct
answer is C. The governor controls the air compressor output by
unloading or cycling it . It has no direct effect on the mechanical brake
parts . While the pressure setting is important to maintain air brake
system pressure within acceptable limits , an incorrect setting will not
cause the drum on an air - braked vehicle to overheat . All other choices
given , however , will cause overheating problems .
4. All the brakes drag on a truck with hydraulic brakes . Which of the
following could be the cause ? A. air in the hydraulic system
B. too high a vacuum supply to the power brake booster
,C. a leaking secondary cup in the master cylinder
D. no brake pedal free travel - ANSWER ✔✔4. The correct answer is
D. Only a brake pedal with no free travel will cause all of the brakes to
drag . Answer A - air in the hydraulic system , will cause a spongy pedal ,
while answer B - too high a vacuum to the power booster , won't affect
brake drag at all . Answer C , a leaking secondary cup in the master
cylinder , could increase pedal travel , but won't cause the brakes to
drag .
5. Which of the following could cause a pulsating brake pedal on a truck
with hydraulic brakes ?
A. zero brake pedal free travel
B. glazed linings
C. an out - of - round brake drum
D. a frozen wheel cylinder piston. - ANSWER ✔✔5. The correct
answer is C. Of the choices given , only an out - of - round brake drum
can cause pulsation in a hydrau lic brake system . Answer A , zero brake
pedal free travel , will cause a dragging brake condition , but not
pulsation . Answer B , glazed linings , will affect stopping performance
and noise , and answer D , a frozen wheel cylinder , will de grade
stopping performance , but will not cause pulsation.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, 6. Air pressure gauges change an air pressure signal into an electronic
voltage signal using which of the following components ?
A. inductor
B. capacitor
C. transducer
D. regulator - ANSWER ✔✔6. The correct answer is C. An element
inside an air pressure transducer responds to air pressure increase or
decrease, and the transducer converts that pressure differentiation into a
voltage signal, which is displayed in a proportionate reading on the dash
gauge.
7. Technician A says that linings worn too thin on an air - braked vehicle
can cause the S - camshaft to roll over . Technician B says this condition
can cause excess brake pedal travel . Who is right ?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER ✔✔7. The correct answer is A. The
brake adjuster is connected to a shaft that runs perpendicular to the
plane formed by the pushrod and slack adjuster. As the pushrod is
Questions and Correct
Answers | New Update
2. The Driver Vehicle Inspection Report DVIR should be submitted :
A. according to the vehicle maintenance schedule
B. when a failure occurs
C. weekly
D. daily - ANSWER ✔✔The correct answer is D. Federal Motor
Vehicle Safety Standards ( FMVSS ) require the driver to submit a DVIR
,to their motor carrier or owner at the end of each day . The DVIR is used
to identify defects or deficiencies that would result in a mechanical
breakdown or effect the safe operation of a vehicle Once a driver
submits the DVIR , a motor carrier or its agent must investigate and
repair the defect or deficiency .
3. Which of the following cannot cause a drum on an air - braked vehicle
to overheat ?
A. an over - tightened brake adjuster at that wheel
B. under - adjusted brake ( s ) elsewhere on the vehicle
C. too - high governor cut - out pressure
D. driving downhill in too high a gear. - ANSWER ✔✔3. The correct
answer is C. The governor controls the air compressor output by
unloading or cycling it . It has no direct effect on the mechanical brake
parts . While the pressure setting is important to maintain air brake
system pressure within acceptable limits , an incorrect setting will not
cause the drum on an air - braked vehicle to overheat . All other choices
given , however , will cause overheating problems .
4. All the brakes drag on a truck with hydraulic brakes . Which of the
following could be the cause ? A. air in the hydraulic system
B. too high a vacuum supply to the power brake booster
,C. a leaking secondary cup in the master cylinder
D. no brake pedal free travel - ANSWER ✔✔4. The correct answer is
D. Only a brake pedal with no free travel will cause all of the brakes to
drag . Answer A - air in the hydraulic system , will cause a spongy pedal ,
while answer B - too high a vacuum to the power booster , won't affect
brake drag at all . Answer C , a leaking secondary cup in the master
cylinder , could increase pedal travel , but won't cause the brakes to
drag .
5. Which of the following could cause a pulsating brake pedal on a truck
with hydraulic brakes ?
A. zero brake pedal free travel
B. glazed linings
C. an out - of - round brake drum
D. a frozen wheel cylinder piston. - ANSWER ✔✔5. The correct
answer is C. Of the choices given , only an out - of - round brake drum
can cause pulsation in a hydrau lic brake system . Answer A , zero brake
pedal free travel , will cause a dragging brake condition , but not
pulsation . Answer B , glazed linings , will affect stopping performance
and noise , and answer D , a frozen wheel cylinder , will de grade
stopping performance , but will not cause pulsation.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, 6. Air pressure gauges change an air pressure signal into an electronic
voltage signal using which of the following components ?
A. inductor
B. capacitor
C. transducer
D. regulator - ANSWER ✔✔6. The correct answer is C. An element
inside an air pressure transducer responds to air pressure increase or
decrease, and the transducer converts that pressure differentiation into a
voltage signal, which is displayed in a proportionate reading on the dash
gauge.
7. Technician A says that linings worn too thin on an air - braked vehicle
can cause the S - camshaft to roll over . Technician B says this condition
can cause excess brake pedal travel . Who is right ?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER ✔✔7. The correct answer is A. The
brake adjuster is connected to a shaft that runs perpendicular to the
plane formed by the pushrod and slack adjuster. As the pushrod is
