ASE Brakes T4 Practice Test
#1 2026 Exam Questions and
Correct Answers | New Update
Which of the following could cause the brakes on a truck to wear too
fast?
A. Glazed Drums
B. Wrong linings installed
C. Low air pressure in the service tanks
,D. Governor cut-out pressure too high - ANSWER ✔✔Answer A is
incorrect. Glazed drum linings are hard and do not wear. They also do
not stop the truck.
Answer B is correct. The wrong lining for the application may be the
problem.
Answer C is incorrect. Low air pressure in the tanks would not cause
brake wear. It may cause a low amount of reserve air in case of multiple
brake applications.
Answer D is incorrect. High governor cut=out pressure may cause the
safety valve to open, but would not cause the brakes to wear too fast.
Which of the following could case one brake on a truck to wear faster
than the others?
A. Mismatched service brake chambers
B. Mismatched parking brake chambers
C. Low air pressure in the service tanks
D. Governor cut-out pressure too low - ANSWER ✔✔Answer A is
correct. Mismatched brake service chambers would apply unequal brake
application pressure from side to side, which would cause one brake to
wear faster.
,Answer B is incorrect. Mismatched parking brake chambers would not
cause brake wear. It would possibly allow the brake to roll when parked,
because one side could have insufficient parking brake application.
Answer C is incorrect. Low air pressure in the tanks would not cause
brake wear. It may cause a low amount of reserve air in case of multiple
brake applications
Answer D is incorrect. Low governor cut-out pressure may cause an
inadequate amount of air in reserve but would not cause the brake to
wear too fast.
There is an audible air leak from under the dash when the foot valve is
applied. Technician A says the double-check valve may be faulty.
Technician B says the single-check valve may be
faulty. Who is correct? - ANSWER ✔✔A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer A is correct. A leaking double check valve could allow air to flow
to the foot valve and out the open exhaust
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Answer B is incorrect. Single check valves are used to protect the tanks.
They do not cause an air leak when the brakes are applied.
Answer C is incorrect. Technician B is incorrect.
Answer D is incorrect. Technician A is correct.
On a straight truck equipped with air brakes, the secondary tank
pressure gauge falls to zero when she wet air tank is drained. Technician
A says the one-way check valve may be faulty.
Technician B says the foor valve may be faulty. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - ANSWER ✔✔Answer A is correct. The one way
check valve should protect the secondary tank. The check valve is
leaking.
Answer B is incorrect. The foot valve does not separate the wet and
secondary tanks.
Answer C is incorrect. Technician B is incorrect.
Answer D is incorrect. Technician A is correct.
#1 2026 Exam Questions and
Correct Answers | New Update
Which of the following could cause the brakes on a truck to wear too
fast?
A. Glazed Drums
B. Wrong linings installed
C. Low air pressure in the service tanks
,D. Governor cut-out pressure too high - ANSWER ✔✔Answer A is
incorrect. Glazed drum linings are hard and do not wear. They also do
not stop the truck.
Answer B is correct. The wrong lining for the application may be the
problem.
Answer C is incorrect. Low air pressure in the tanks would not cause
brake wear. It may cause a low amount of reserve air in case of multiple
brake applications.
Answer D is incorrect. High governor cut=out pressure may cause the
safety valve to open, but would not cause the brakes to wear too fast.
Which of the following could case one brake on a truck to wear faster
than the others?
A. Mismatched service brake chambers
B. Mismatched parking brake chambers
C. Low air pressure in the service tanks
D. Governor cut-out pressure too low - ANSWER ✔✔Answer A is
correct. Mismatched brake service chambers would apply unequal brake
application pressure from side to side, which would cause one brake to
wear faster.
,Answer B is incorrect. Mismatched parking brake chambers would not
cause brake wear. It would possibly allow the brake to roll when parked,
because one side could have insufficient parking brake application.
Answer C is incorrect. Low air pressure in the tanks would not cause
brake wear. It may cause a low amount of reserve air in case of multiple
brake applications
Answer D is incorrect. Low governor cut-out pressure may cause an
inadequate amount of air in reserve but would not cause the brake to
wear too fast.
There is an audible air leak from under the dash when the foot valve is
applied. Technician A says the double-check valve may be faulty.
Technician B says the single-check valve may be
faulty. Who is correct? - ANSWER ✔✔A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer A is correct. A leaking double check valve could allow air to flow
to the foot valve and out the open exhaust
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Answer B is incorrect. Single check valves are used to protect the tanks.
They do not cause an air leak when the brakes are applied.
Answer C is incorrect. Technician B is incorrect.
Answer D is incorrect. Technician A is correct.
On a straight truck equipped with air brakes, the secondary tank
pressure gauge falls to zero when she wet air tank is drained. Technician
A says the one-way check valve may be faulty.
Technician B says the foor valve may be faulty. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - ANSWER ✔✔Answer A is correct. The one way
check valve should protect the secondary tank. The check valve is
leaking.
Answer B is incorrect. The foot valve does not separate the wet and
secondary tanks.
Answer C is incorrect. Technician B is incorrect.
Answer D is incorrect. Technician A is correct.
