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ASE T5 2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
1. The truck with the air suspension system shown above leans
to the right. Technician A says that valveX could be the cause.
Technician B says that valve Y
could be the cause. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-1. The correct answer is C,
both technicians are right. Height control valves can fail in
either direction-that is, by controlling the height at too great a
level or at too low a level. If the truck leans, the cause can be
either too great a height on one side or too low a height on the
other. Until the technician knows that
one side is too high or the other too low, he must assume that
either valve might be malfunctioning.
4. The drive axles on a truck with a walking beam suspension
are out of alignment in a manner that is causing vehicle tire
wear and steering instability.
Technician A says the cause could be that the torque rods are
too long or too short. Technician B says the cause could be
worn walking beam bushings. Who is
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right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-4. The correct answer is B.
The beam bushings maintain horizontal alignment of the axles,
especially on turns. When bushings are worn, the beam on
either
side can move forward or backward, turning the axles in
relation to the frame and causing the type of misalignment that
causes tire wear and steering problems.
2. The driver of a truck says that he hears a clattering noise
from the front axle when driving on a rough road. Technician A
says the cause could be worn shock absorber mounting
bushings. Technician B says the cause could be worn shackle
bushings. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-2. The correct answer is C,
both technicians are right. Either a worn shackle bushing or
worn shock bushing can cause noise due to looseness when
the truck hits a good bump. If there is clearance between the
rubber bushing and mounting bolt, or if the rubber
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bushing has worn very thin, elongated or even broken and
fallen out, the result will be a clattering noise as the motion of
the suspension repeatedly takes up the
clearance first in one direction and then in the other.
5. The driver of a truck says that it is too hard to steer and that
the steering wheel return is too fast. Which of these is the most
likely cause?
A. too much negative caster
B. too much positive caster
C. too much negative camber
D. too much positive camber - correct answer-5. The correct
answer is B. Caster action is the most critical suspension
alignment specification in terms of affecting steering wheel
return to the center. Caster
actually lifts the truck as the wheel is turned in either direction;
when the driver allows the wheel to return to center, the weight
of the truck actually forces the steering system to that position.
When the caster setting is too high, the weight of the truck
exerts too much force in centering the steering and creates the
symptoms
noted.
3. The driver of a truck that has just had its front springs and
hangers replaced says that it is hard to keep the steering wheel
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in a straight-ahead position. Technician A says the cause could
be that the caster shims were installed backwards. Technician
B says the cause could be that the wrong spring hangers were
installed. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-3. The correct answer is A.
Correct caster is critically important in keeping tires at the right
angle and enabling the steering system to maintain directional
stability. Since the caster shims would have to be removed for
this work to be done, it's quite logical to assume they might
have been installed backwards, which would create the
critically incorrect caster setting that would make the truck
wander severely.
6. A steering gear binds when turning to the left after it has
been adjusted. The most likely cause is that the:
A. worm bearing preload was set too high
B. steering shaft U-joints are sticking
C. gearbox was not centered when the lash was adjusted
D. recirculating ball nut thrust adjustment is off - correct
answer-6. The correct answer is A. Excessive worm bearing
preload would show up as binding as the steering was turned to
one extreme and the friction became excessive due to the
combination of normal load and too much preload. B is not the
ASE T5 2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
1. The truck with the air suspension system shown above leans
to the right. Technician A says that valveX could be the cause.
Technician B says that valve Y
could be the cause. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-1. The correct answer is C,
both technicians are right. Height control valves can fail in
either direction-that is, by controlling the height at too great a
level or at too low a level. If the truck leans, the cause can be
either too great a height on one side or too low a height on the
other. Until the technician knows that
one side is too high or the other too low, he must assume that
either valve might be malfunctioning.
4. The drive axles on a truck with a walking beam suspension
are out of alignment in a manner that is causing vehicle tire
wear and steering instability.
Technician A says the cause could be that the torque rods are
too long or too short. Technician B says the cause could be
worn walking beam bushings. Who is
, Page | 2
right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-4. The correct answer is B.
The beam bushings maintain horizontal alignment of the axles,
especially on turns. When bushings are worn, the beam on
either
side can move forward or backward, turning the axles in
relation to the frame and causing the type of misalignment that
causes tire wear and steering problems.
2. The driver of a truck says that he hears a clattering noise
from the front axle when driving on a rough road. Technician A
says the cause could be worn shock absorber mounting
bushings. Technician B says the cause could be worn shackle
bushings. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-2. The correct answer is C,
both technicians are right. Either a worn shackle bushing or
worn shock bushing can cause noise due to looseness when
the truck hits a good bump. If there is clearance between the
rubber bushing and mounting bolt, or if the rubber
, Page | 3
bushing has worn very thin, elongated or even broken and
fallen out, the result will be a clattering noise as the motion of
the suspension repeatedly takes up the
clearance first in one direction and then in the other.
5. The driver of a truck says that it is too hard to steer and that
the steering wheel return is too fast. Which of these is the most
likely cause?
A. too much negative caster
B. too much positive caster
C. too much negative camber
D. too much positive camber - correct answer-5. The correct
answer is B. Caster action is the most critical suspension
alignment specification in terms of affecting steering wheel
return to the center. Caster
actually lifts the truck as the wheel is turned in either direction;
when the driver allows the wheel to return to center, the weight
of the truck actually forces the steering system to that position.
When the caster setting is too high, the weight of the truck
exerts too much force in centering the steering and creates the
symptoms
noted.
3. The driver of a truck that has just had its front springs and
hangers replaced says that it is hard to keep the steering wheel
, Page | 4
in a straight-ahead position. Technician A says the cause could
be that the caster shims were installed backwards. Technician
B says the cause could be that the wrong spring hangers were
installed. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - correct answer-3. The correct answer is A.
Correct caster is critically important in keeping tires at the right
angle and enabling the steering system to maintain directional
stability. Since the caster shims would have to be removed for
this work to be done, it's quite logical to assume they might
have been installed backwards, which would create the
critically incorrect caster setting that would make the truck
wander severely.
6. A steering gear binds when turning to the left after it has
been adjusted. The most likely cause is that the:
A. worm bearing preload was set too high
B. steering shaft U-joints are sticking
C. gearbox was not centered when the lash was adjusted
D. recirculating ball nut thrust adjustment is off - correct
answer-6. The correct answer is A. Excessive worm bearing
preload would show up as binding as the steering was turned to
one extreme and the friction became excessive due to the
combination of normal load and too much preload. B is not the
