ASE T5 Exam 2026/2027 NEWEST QUESTIONS
WITH ANSWERS GRADED A+
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 -✓✓ 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
right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B -✓✓ 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 -✓✓ 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
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 -✓✓ 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 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 -✓✓ 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 -✓✓ 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 answer because sticking U-joints
should be apparent and cause rough rotation
of the wheel at all steering angles. If either lash or ball nut thrust adjustment was
incorrect, the box would either bind at the center or be too loose at the extremes
, of travel.
7. Which of these is most likely to cause steering wheel shimmy?
A. too much positive caster
B. out-of-balance wheels
C. air in the power steering system
D. low tire pressure -✓✓ 7. The correct answer is B. Out-of-balance wheels cause
a high frequency vibration, which shows up in the wheel as shimmy. A is not the
answer because caster shows up as too much self-centering action (hard steering).
Air in the power steering system causes constantly or intermittently hard steering
(lack of hydraulic force). Low tire pressures generally do not cause an uneven
force on the steering system, but rather poor tread contact with the road and vague
steering or hard steering.
8. Technician A says that steering columns are collapsible to prevent the column
from causing serious injury to the driver during a collision. Technician B says that
when a steering column has been collapsed, the entire column must be replaced.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B -✓✓ 8. The correct answer is C, both technicians are right.
Steering columns are made to be collapsible to prevent the column from seriously
impacting the
driver during a front-end collision. If an accident has occurred, and the steering
column has partially collapsed, the entire column must be replaced.
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?
WITH ANSWERS GRADED A+
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 -✓✓ 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
right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B -✓✓ 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 -✓✓ 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
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 -✓✓ 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 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 -✓✓ 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 -✓✓ 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 answer because sticking U-joints
should be apparent and cause rough rotation
of the wheel at all steering angles. If either lash or ball nut thrust adjustment was
incorrect, the box would either bind at the center or be too loose at the extremes
, of travel.
7. Which of these is most likely to cause steering wheel shimmy?
A. too much positive caster
B. out-of-balance wheels
C. air in the power steering system
D. low tire pressure -✓✓ 7. The correct answer is B. Out-of-balance wheels cause
a high frequency vibration, which shows up in the wheel as shimmy. A is not the
answer because caster shows up as too much self-centering action (hard steering).
Air in the power steering system causes constantly or intermittently hard steering
(lack of hydraulic force). Low tire pressures generally do not cause an uneven
force on the steering system, but rather poor tread contact with the road and vague
steering or hard steering.
8. Technician A says that steering columns are collapsible to prevent the column
from causing serious injury to the driver during a collision. Technician B says that
when a steering column has been collapsed, the entire column must be replaced.
Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B -✓✓ 8. The correct answer is C, both technicians are right.
Steering columns are made to be collapsible to prevent the column from seriously
impacting the
driver during a front-end collision. If an accident has occurred, and the steering
column has partially collapsed, the entire column must be replaced.
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?
