ASE T5| Exam Ques ons and answers | Updated RATED
A+ | 2026 | NEW
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
direc&on-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. Un&l the technician knows that
one side is too high or the other too low, he must assume that either valve might be
malfunc&oning.
4. The drive axles on a truck with a walking beam suspension are out of alignment in a manner
that is causing vehicle &re 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 rela&on to the frame and causing the
type of misalignment that causes &re wear and steering problems.
2. The driver of a truck says that he hears a cla/ering noise from the front axle when driving on
a rough road. Technician A says the cause could be worn shock absorber moun&ng 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 moun&ng bolt, or if the rubber
bushing has worn very thin, elongated or even broken and fallen out, the result will be a
cla/ering noise as the mo&on of the suspension repeatedly takes up the
clearance first in one direc&on 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 nega&ve caster
B. too much posi&ve caster
C. too much nega&ve camber
D. too much posi&ve camber
5. The correct answer is B. Caster ac&on is the most cri&cal suspension alignment specifica&on
in terms of affec&ng steering wheel return to the center. Caster
actually li4s the truck as the wheel is turned in either direc&on; when the driver allows the
wheel to return to center, the weight of the truck actually forces the steering system to that
posi&on. When the caster se6ng 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 posi&on. 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 cri&cally important in keeping &res at the right angle
and enabling the steering system to maintain direc&onal
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 cri&cally
incorrect caster se6ng that would make the truck wander severely.
, 6. A steering gear binds when turning to the le4 a4er it has been adjusted. The most likely
cause is that the:
A. worm bearing preload was set too high
B. steering sha4 U-joints are s&cking
C. gearbox was not centered when the lash was adjusted
D. recircula&ng 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 fric&on became excessive due to the combina&on
of normal load and too much preload. B is not the answer because s&cking U-joints should be
apparent and cause rough rota&on
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 posi&ve caster
B. out-of-balance wheels
C. air in the power steering system
D. low &re pressure
7. The correct answer is B. Out-of-balance wheels cause a high frequency vibra&on, which
shows up in the wheel as shimmy. A is not the answer because caster shows up as too much
self-centering ac&on (hard steering). Air in the power steering system causes constantly or
intermi/ently hard steering (lack of hydraulic force). Low &re 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 en&re 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 impac&ng the
driver during a front-end collision. If an accident has occurred, and the steering column has
par&ally collapsed, the en&re column must be replaced.
A+ | 2026 | NEW
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
direc&on-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. Un&l the technician knows that
one side is too high or the other too low, he must assume that either valve might be
malfunc&oning.
4. The drive axles on a truck with a walking beam suspension are out of alignment in a manner
that is causing vehicle &re 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 rela&on to the frame and causing the
type of misalignment that causes &re wear and steering problems.
2. The driver of a truck says that he hears a cla/ering noise from the front axle when driving on
a rough road. Technician A says the cause could be worn shock absorber moun&ng 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 moun&ng bolt, or if the rubber
bushing has worn very thin, elongated or even broken and fallen out, the result will be a
cla/ering noise as the mo&on of the suspension repeatedly takes up the
clearance first in one direc&on 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 nega&ve caster
B. too much posi&ve caster
C. too much nega&ve camber
D. too much posi&ve camber
5. The correct answer is B. Caster ac&on is the most cri&cal suspension alignment specifica&on
in terms of affec&ng steering wheel return to the center. Caster
actually li4s the truck as the wheel is turned in either direc&on; when the driver allows the
wheel to return to center, the weight of the truck actually forces the steering system to that
posi&on. When the caster se6ng 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 posi&on. 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 cri&cally important in keeping &res at the right angle
and enabling the steering system to maintain direc&onal
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 cri&cally
incorrect caster se6ng that would make the truck wander severely.
, 6. A steering gear binds when turning to the le4 a4er it has been adjusted. The most likely
cause is that the:
A. worm bearing preload was set too high
B. steering sha4 U-joints are s&cking
C. gearbox was not centered when the lash was adjusted
D. recircula&ng 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 fric&on became excessive due to the combina&on
of normal load and too much preload. B is not the answer because s&cking U-joints should be
apparent and cause rough rota&on
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 posi&ve caster
B. out-of-balance wheels
C. air in the power steering system
D. low &re pressure
7. The correct answer is B. Out-of-balance wheels cause a high frequency vibra&on, which
shows up in the wheel as shimmy. A is not the answer because caster shows up as too much
self-centering ac&on (hard steering). Air in the power steering system causes constantly or
intermi/ently hard steering (lack of hydraulic force). Low &re 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 en&re 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 impac&ng the
driver during a front-end collision. If an accident has occurred, and the steering column has
par&ally collapsed, the en&re column must be replaced.
