ASE T5 LATEST 2026 EXAM QUESTIONS AND SOLUTIONS
GUARANTEE A+
✔✔12. The driver of a new truck says that he feels a light tire thump. Technician A says
the cause could be an out-of-balance tire. Technician B says the cause could be an
over-inflated tire. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔12. The correct answer is A. A tire that is out of balance
produces uneven forces in the steering system, The tire tends to bounce up-and-down
as the heavier
portion alternately goes over the top and hits the pavement. Tires that are overinflated
still produce constant forces on the steering system. Overinflation tends to create
uneven wear and may cause imprecise steering because the full width of the tread does
not contact the road surface.
✔✔13. A vehicle has exhibited power steering fluid leakage. Disassembly of
components has revealed deteriorated seals in both the pump and steering gear.
Technician A says to find out if the vehicle has been run severely overloaded.
Technician B says to check for use of an incorrect replacement hose. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔13. The correct answer is C, both technicians are right. The most
likely cause of the problem is overheating of the fluid because all the seals in the
system
deteriorated. Running a vehicle severely overloaded or installing a hose with too small a
diameter could overheat the power steering fluid and create widespread failure of the
system's seals.
✔✔9. A constant buzzing noise comes from the power steering pump. Technician A
says the cause could be air in the system. Technician B says the cause could be that
the relief valve is stuck in the open position. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔9. The correct answer is A. Fluid passes through the power
steering system parts at high flow rates and under high pressures. When it becomes
aerated, the
bubbles cause rough, uneven flow and consequent noise. When a relief valve sticks
open, fluid flows more smoothly (in a less restricted manner than normal).
causing no noise but poor power assist instead.
,✔✔14. During inspection of a tire, a technician finds a slight bulge in one area of the
tread. The next step taken should be:
A. Remove the tire from the rim and seal the inner liner (the bulge probably results from
an air leak).
B. Replace the tire as its use is in violation of CVSA regulations and would put the truck
out of service if it were subjected to a roadside inspection.
C. Have the tire retreaded.
D. Measure the size of the bulge to see if it is no greater than 3/8 inch and look for a
small, blue triangle stamped into the tire nearby. - ✔✔14. The correct answer is D. A
bulge not exceeding 3/8-in. and marked by a blue triangle indicates that the tire is
bulging not because of a structural defect but
because of a section repair. The blue triangle merely indicates a repair has been made.
A tire that has a bulge from a repair of a dimension within the 3/8-in. limit
will pass a roadside inspection without any problem and will operate safely.
✔✔10. The steering gear sector shaft preload is to be set. Technician A says the
steering wheel must be in the center position. Technician B says the drag link should be
disconnected from the pitman arm. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔10. The correct answer is C, both technicians are right. The
steering wheel must be in the center position because clearances in the box change
(they are
tightest at center) and setting preload at another position would cause binding at the
center. The drag link must be disconnected because preload is measured by turning the
steering box. It produces a very small amount of friction that must be measured with an
inch pound torque wrench and is much smaller than the friction inherent in the rest of
the steering system.
✔✔11. Which of these could cause the front tires of a truck to show a feather-edged
wear pattern?
A. a wrong toe-in setting
B. a wrong camber setting
C. a wrong caster setting
D. wrong tire pressure - ✔✔11. The correct answer is A. Toe-in that is incorrect causes
the entire tread to contact the road at an angle; this is what produces feather-edge
wear. Incorrect
camber causes wear on one side of the tire because it contacts the road unevenly, from
side-to-side, when camber is incorrect. C is not the answer because caster that is
incorrectly set can produce poor steerability, but usually does not critically affect tire
wear. Wrong tire
pressures produce wear that is excessive at center or on both sides.
, ✔✔15. Technician A says that when diagnosing a power steering leak, the wheels
should be in a straight-ahead position. Technician B says that when diagnosing a power
steering leak, the steering wheel should be rotated from stop-to-stop to put pressure on
the
system. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔15. The correct answer is B. When diagnosing a power steering
leak, the area should be clean and the system should be full of power steering fluid. The
engine should be started and the steering wheel rotated from stop-to-stop, making sure
the wheel is not held against either stop for more than two seconds.
✔✔16. A truck's leaf springs have broken at a low mileage. A careful inspection reveals
no problems related to the spring system, such as frozen shackle bushings or worn
hangers, bushings or spring pins. The truck has not been run overloaded. Technician A
says the problem may have occurred because the -bolt nuts were not retorqued at
specified intervals after the springs were replaced. Technician B says the whole
problem could be re-use of old U-bolts or installation of an inferior type of U-bolt. Who is
right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔16. The correct answer is C, both technicians are right. Leaf
spring stacks are extremely sensitive to proper mounting. They naturally tend to settle
especially shortly after being installed. U-bolts must be of extremely high quality to
retain torque adequately. Thus, the best procedure would be to replace the U-bolts with
an approved part, torque the nuts to specification and be sure to retorque them at
specified intervals.
✔✔19. A tractor with a single height control valve exhibits a ride height that is
consistently too high. A brief inspection has revealed that the height control valve is in
reasonable mechanical condition and properly adjusted. Technician A says to check the
air brake system operating pressure and make sure it is not too high. Technician B says
to check the physical condition of all the shock absorbers as well as all the travel stops
that may be incorporated in the suspension. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔19. The correct answer is B. The shocks and travel stops are
probably not working properly. Even with a high brake air system pressure, the control
valve will shut off tight, sealing even with excessive pressure at the proper ride height.
On the other hand, if suspension travel is excessive in the downward direction, this can
allow the truck to ride at too low a height for a brief period over hard bumps. This tricks
the control valve into feeding air to the system when it is not actually needed.
GUARANTEE A+
✔✔12. The driver of a new truck says that he feels a light tire thump. Technician A says
the cause could be an out-of-balance tire. Technician B says the cause could be an
over-inflated tire. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔12. The correct answer is A. A tire that is out of balance
produces uneven forces in the steering system, The tire tends to bounce up-and-down
as the heavier
portion alternately goes over the top and hits the pavement. Tires that are overinflated
still produce constant forces on the steering system. Overinflation tends to create
uneven wear and may cause imprecise steering because the full width of the tread does
not contact the road surface.
✔✔13. A vehicle has exhibited power steering fluid leakage. Disassembly of
components has revealed deteriorated seals in both the pump and steering gear.
Technician A says to find out if the vehicle has been run severely overloaded.
Technician B says to check for use of an incorrect replacement hose. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔13. The correct answer is C, both technicians are right. The most
likely cause of the problem is overheating of the fluid because all the seals in the
system
deteriorated. Running a vehicle severely overloaded or installing a hose with too small a
diameter could overheat the power steering fluid and create widespread failure of the
system's seals.
✔✔9. A constant buzzing noise comes from the power steering pump. Technician A
says the cause could be air in the system. Technician B says the cause could be that
the relief valve is stuck in the open position. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔9. The correct answer is A. Fluid passes through the power
steering system parts at high flow rates and under high pressures. When it becomes
aerated, the
bubbles cause rough, uneven flow and consequent noise. When a relief valve sticks
open, fluid flows more smoothly (in a less restricted manner than normal).
causing no noise but poor power assist instead.
,✔✔14. During inspection of a tire, a technician finds a slight bulge in one area of the
tread. The next step taken should be:
A. Remove the tire from the rim and seal the inner liner (the bulge probably results from
an air leak).
B. Replace the tire as its use is in violation of CVSA regulations and would put the truck
out of service if it were subjected to a roadside inspection.
C. Have the tire retreaded.
D. Measure the size of the bulge to see if it is no greater than 3/8 inch and look for a
small, blue triangle stamped into the tire nearby. - ✔✔14. The correct answer is D. A
bulge not exceeding 3/8-in. and marked by a blue triangle indicates that the tire is
bulging not because of a structural defect but
because of a section repair. The blue triangle merely indicates a repair has been made.
A tire that has a bulge from a repair of a dimension within the 3/8-in. limit
will pass a roadside inspection without any problem and will operate safely.
✔✔10. The steering gear sector shaft preload is to be set. Technician A says the
steering wheel must be in the center position. Technician B says the drag link should be
disconnected from the pitman arm. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔10. The correct answer is C, both technicians are right. The
steering wheel must be in the center position because clearances in the box change
(they are
tightest at center) and setting preload at another position would cause binding at the
center. The drag link must be disconnected because preload is measured by turning the
steering box. It produces a very small amount of friction that must be measured with an
inch pound torque wrench and is much smaller than the friction inherent in the rest of
the steering system.
✔✔11. Which of these could cause the front tires of a truck to show a feather-edged
wear pattern?
A. a wrong toe-in setting
B. a wrong camber setting
C. a wrong caster setting
D. wrong tire pressure - ✔✔11. The correct answer is A. Toe-in that is incorrect causes
the entire tread to contact the road at an angle; this is what produces feather-edge
wear. Incorrect
camber causes wear on one side of the tire because it contacts the road unevenly, from
side-to-side, when camber is incorrect. C is not the answer because caster that is
incorrectly set can produce poor steerability, but usually does not critically affect tire
wear. Wrong tire
pressures produce wear that is excessive at center or on both sides.
, ✔✔15. Technician A says that when diagnosing a power steering leak, the wheels
should be in a straight-ahead position. Technician B says that when diagnosing a power
steering leak, the steering wheel should be rotated from stop-to-stop to put pressure on
the
system. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔15. The correct answer is B. When diagnosing a power steering
leak, the area should be clean and the system should be full of power steering fluid. The
engine should be started and the steering wheel rotated from stop-to-stop, making sure
the wheel is not held against either stop for more than two seconds.
✔✔16. A truck's leaf springs have broken at a low mileage. A careful inspection reveals
no problems related to the spring system, such as frozen shackle bushings or worn
hangers, bushings or spring pins. The truck has not been run overloaded. Technician A
says the problem may have occurred because the -bolt nuts were not retorqued at
specified intervals after the springs were replaced. Technician B says the whole
problem could be re-use of old U-bolts or installation of an inferior type of U-bolt. Who is
right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔16. The correct answer is C, both technicians are right. Leaf
spring stacks are extremely sensitive to proper mounting. They naturally tend to settle
especially shortly after being installed. U-bolts must be of extremely high quality to
retain torque adequately. Thus, the best procedure would be to replace the U-bolts with
an approved part, torque the nuts to specification and be sure to retorque them at
specified intervals.
✔✔19. A tractor with a single height control valve exhibits a ride height that is
consistently too high. A brief inspection has revealed that the height control valve is in
reasonable mechanical condition and properly adjusted. Technician A says to check the
air brake system operating pressure and make sure it is not too high. Technician B says
to check the physical condition of all the shock absorbers as well as all the travel stops
that may be incorporated in the suspension. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ✔✔19. The correct answer is B. The shocks and travel stops are
probably not working properly. Even with a high brake air system pressure, the control
valve will shut off tight, sealing even with excessive pressure at the proper ride height.
On the other hand, if suspension travel is excessive in the downward direction, this can
allow the truck to ride at too low a height for a brief period over hard bumps. This tricks
the control valve into feeding air to the system when it is not actually needed.
