ASE T5 LATEST 2026 TEST EVALUATION EXAM QUESTIONS
AND SOLUTIONS GUARANTEE A+
✔✔A driver complains of a front end shimmy with slight vibrations. Technician A says
loose or worn kingpins or kingpin bushings might be the cause. Technician B says that
an overloaded trailer might be the cause. Who is correct?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is correct. Only Technician A is correct. A front shimmy
with slight vibrations could be caused by a loose kingpin or kingpin bearing. Some
OEMs refer to the kingpin as a knuckle pin.
Answer B is incorrect. Overloading will not cause front end shimmy.
Answer C is incorrect. Only Technician A is correct.
Answer D is incorrect. Technician A is correct.
✔✔The most common type of power steering hydraulic pump used on most Class 8
trucks/tractors equipped with power steering systems is:
Gear.
Vane.
Plunger.
Centrifugal. - ✔✔Answer A is incorrect. Gear pumps are most common on large, off
highway applications.
Answer B is correct. The two most common types are roller pumps and vane pumps.
Answer C is incorrect. Plunger is not a type of power steering pump used in truck/tractor
applications.
Answer D is incorrect. Centrifugal is not a type of power steering pump used in
truck/tractor applications.
✔✔Technician A says to inflate mounted tires in a safety cage or using a portable lock
ring guard. Technician B says to first mount the tire on the truck, then inflate to the
proper tire pressure. Who is right?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is correct. Only Technician A is correct. You must inflate
mounted tires in a safety cage or using a portable lock ring guard.
Answer B is incorrect. You do not mount the tire on the truck before inflation because an
improperly fitted rim ring could dislodge, causing injury.
Answer C is incorrect. Only Technician A is correct.
Answer D is incorrect. Technician A is correct.
✔✔While performing an inspection on a heavy-duty tractor, the technician finds the
frame rail buckled. Which of the following might be the cause for this condition?
Too many holes drilled in the frame
,Extreme operating conditions
The wrong bolts used in a repair
A vehicle collision - ✔✔Answer A is incorrect. Drilling many holes in a frame will weaken
it and allow sag to take place.
Answer B is incorrect. Extreme operating conditions such as overloading can also
cause sag.
Answer C is incorrect. The wrong bolts used in a frame repair can cause sag due to a
release of the reinforcement strength of the repair.
Answer D is correct. A collision can produce the end forces on a frame that would be
required to cause a buckling upward of the frame.
✔✔Camber may be defined as:
The forward or rearward tilt of the kingpin at the top.
The tracking angle of the tires from a true straight-ahead track.
The inward or outward tilt of the top of the wheel when viewed from the front of the
vehicle.
The amount in degrees that the top of the kingpin inclines away from vertical as viewed
from the front of the vehicle. - ✔✔Answer A is incorrect. The forward or rearward tilt of
the kingpin at the top is caster.
Answer B is incorrect. The tracking angle of the tires from a true straight-ahead track is
toe.
Answer C is correct. Camber is the inward or outward tilt of the top of the wheel when
viewed from the front of the vehicle.
Answer D is incorrect. The amount in degrees that the top of the king-pin inclines away
from vertical as viewed from the front of the vehicle is KPI
✔✔A technician finds that the power steering system is overheating. This condition may
be caused by all of the following EXCEPT:
A loose steering shaft flex joint.
Underlubricated ball joints.
A kink or pinch in the fluid return line.
Blocked airflow across the heat exchanger. - ✔✔Answer A is correct. A steering shaft
flex joint is the flexible connector joint between the steering shaft and the steering gear.
Being loose, the flex joint would not cause the power steering to overheat.
Answer B is incorrect. Under lubricated ball joints in the steering joints could make the
wheels hard to turn, causing the power steering to work harder and overheat.
Answer C is incorrect. A blocked or restricted fluid return line would hinder the fluid flow
to the power steering heat exchanger, reducing its ability to dissipate the heat from the
fluid.
Answer D is incorrect. Blocked airflow across the heat exchanger would not allow
dissipation of heat from the fluid.
✔✔Suspension components are replaced on a medium-duty truck with single-air-valve
rear air suspension. Technician A says a tape measure can be used to measure from a
frame straightedge to the drive axle. Technician B says if the distance from the axle to a
, fixed straightedge is different on each side of the suspension, one of the front equalizing
beam bushings may be worn. Who is correct?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is incorrect. A tape measure cannot be used to measure
from a frame straightedge to the drive axle. A trammel bar should be used,
Answer B is correct. Only Technician B is correct. If the distance from one side of the
axle to a fixed straightedge is different compared to the other side, one of the front
equalizing beam bushings may be worn. Worn bushings allow the axle to shift fore and
aft and not run parallel to the frame rail
Answer C is incorrect. Only Technician B is correct.
Answer D is incorrect. Technician B is correct.
✔✔Technician A says that the minimum and maximum air pressure going to the air
bags is controlled by the pressure protection valve. Technician B says that the minimum
air pressure in the bags should not to be less than 3 psi. Who is correct?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is incorrect. The minimum and maximum air pressure
going to the bags is controlled by the hand control valve, not a pressure protection
valve.
Answer B is correct. Damage to suspension components may occur if the air pressure
is below 3 psi.
Answer C is incorrect. Only Technician B is correct.
Answer D is incorrect. Technician B is correct.
✔✔Excessive tire wear is noted on a heavy-duty tractor. Which of the following
suspension components is the LEAST LIKELY cause?
Bent spindle
Improper tie rod setting
Center cross tube bushing
A preloaded axle wheel bearing - ✔✔Answer A is incorrect. A bent spindle would cause
inside or outside tread wear.
Answer B is incorrect. An improper tie rod setting will affect toe, causing tire wear.
Answer C is incorrect. A defective center cross tube bushing can allow for play and
varying toe. Toe and camber are both high tire wear angles.
Answer D is correct. Preloaded axle wheel bearings would be LEAST LIKELY to cause
excessive tire wear. This could, however, cause premature bearing failure.
✔✔When discussing popper relief valve adjustment, a technician turns the steering
wheel to the left until the steering effort increases. He then measures the distance
between the left stop screw and the axle stop. The clearance is found to be 1/4 inch.
After checking the stop screw adjustment, the technician finds that the stop screw is
within adjustment specifications. The technician should:
AND SOLUTIONS GUARANTEE A+
✔✔A driver complains of a front end shimmy with slight vibrations. Technician A says
loose or worn kingpins or kingpin bushings might be the cause. Technician B says that
an overloaded trailer might be the cause. Who is correct?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is correct. Only Technician A is correct. A front shimmy
with slight vibrations could be caused by a loose kingpin or kingpin bearing. Some
OEMs refer to the kingpin as a knuckle pin.
Answer B is incorrect. Overloading will not cause front end shimmy.
Answer C is incorrect. Only Technician A is correct.
Answer D is incorrect. Technician A is correct.
✔✔The most common type of power steering hydraulic pump used on most Class 8
trucks/tractors equipped with power steering systems is:
Gear.
Vane.
Plunger.
Centrifugal. - ✔✔Answer A is incorrect. Gear pumps are most common on large, off
highway applications.
Answer B is correct. The two most common types are roller pumps and vane pumps.
Answer C is incorrect. Plunger is not a type of power steering pump used in truck/tractor
applications.
Answer D is incorrect. Centrifugal is not a type of power steering pump used in
truck/tractor applications.
✔✔Technician A says to inflate mounted tires in a safety cage or using a portable lock
ring guard. Technician B says to first mount the tire on the truck, then inflate to the
proper tire pressure. Who is right?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is correct. Only Technician A is correct. You must inflate
mounted tires in a safety cage or using a portable lock ring guard.
Answer B is incorrect. You do not mount the tire on the truck before inflation because an
improperly fitted rim ring could dislodge, causing injury.
Answer C is incorrect. Only Technician A is correct.
Answer D is incorrect. Technician A is correct.
✔✔While performing an inspection on a heavy-duty tractor, the technician finds the
frame rail buckled. Which of the following might be the cause for this condition?
Too many holes drilled in the frame
,Extreme operating conditions
The wrong bolts used in a repair
A vehicle collision - ✔✔Answer A is incorrect. Drilling many holes in a frame will weaken
it and allow sag to take place.
Answer B is incorrect. Extreme operating conditions such as overloading can also
cause sag.
Answer C is incorrect. The wrong bolts used in a frame repair can cause sag due to a
release of the reinforcement strength of the repair.
Answer D is correct. A collision can produce the end forces on a frame that would be
required to cause a buckling upward of the frame.
✔✔Camber may be defined as:
The forward or rearward tilt of the kingpin at the top.
The tracking angle of the tires from a true straight-ahead track.
The inward or outward tilt of the top of the wheel when viewed from the front of the
vehicle.
The amount in degrees that the top of the kingpin inclines away from vertical as viewed
from the front of the vehicle. - ✔✔Answer A is incorrect. The forward or rearward tilt of
the kingpin at the top is caster.
Answer B is incorrect. The tracking angle of the tires from a true straight-ahead track is
toe.
Answer C is correct. Camber is the inward or outward tilt of the top of the wheel when
viewed from the front of the vehicle.
Answer D is incorrect. The amount in degrees that the top of the king-pin inclines away
from vertical as viewed from the front of the vehicle is KPI
✔✔A technician finds that the power steering system is overheating. This condition may
be caused by all of the following EXCEPT:
A loose steering shaft flex joint.
Underlubricated ball joints.
A kink or pinch in the fluid return line.
Blocked airflow across the heat exchanger. - ✔✔Answer A is correct. A steering shaft
flex joint is the flexible connector joint between the steering shaft and the steering gear.
Being loose, the flex joint would not cause the power steering to overheat.
Answer B is incorrect. Under lubricated ball joints in the steering joints could make the
wheels hard to turn, causing the power steering to work harder and overheat.
Answer C is incorrect. A blocked or restricted fluid return line would hinder the fluid flow
to the power steering heat exchanger, reducing its ability to dissipate the heat from the
fluid.
Answer D is incorrect. Blocked airflow across the heat exchanger would not allow
dissipation of heat from the fluid.
✔✔Suspension components are replaced on a medium-duty truck with single-air-valve
rear air suspension. Technician A says a tape measure can be used to measure from a
frame straightedge to the drive axle. Technician B says if the distance from the axle to a
, fixed straightedge is different on each side of the suspension, one of the front equalizing
beam bushings may be worn. Who is correct?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is incorrect. A tape measure cannot be used to measure
from a frame straightedge to the drive axle. A trammel bar should be used,
Answer B is correct. Only Technician B is correct. If the distance from one side of the
axle to a fixed straightedge is different compared to the other side, one of the front
equalizing beam bushings may be worn. Worn bushings allow the axle to shift fore and
aft and not run parallel to the frame rail
Answer C is incorrect. Only Technician B is correct.
Answer D is incorrect. Technician B is correct.
✔✔Technician A says that the minimum and maximum air pressure going to the air
bags is controlled by the pressure protection valve. Technician B says that the minimum
air pressure in the bags should not to be less than 3 psi. Who is correct?
A only
B only
Both A and B
Neither A nor B - ✔✔Answer A is incorrect. The minimum and maximum air pressure
going to the bags is controlled by the hand control valve, not a pressure protection
valve.
Answer B is correct. Damage to suspension components may occur if the air pressure
is below 3 psi.
Answer C is incorrect. Only Technician B is correct.
Answer D is incorrect. Technician B is correct.
✔✔Excessive tire wear is noted on a heavy-duty tractor. Which of the following
suspension components is the LEAST LIKELY cause?
Bent spindle
Improper tie rod setting
Center cross tube bushing
A preloaded axle wheel bearing - ✔✔Answer A is incorrect. A bent spindle would cause
inside or outside tread wear.
Answer B is incorrect. An improper tie rod setting will affect toe, causing tire wear.
Answer C is incorrect. A defective center cross tube bushing can allow for play and
varying toe. Toe and camber are both high tire wear angles.
Answer D is correct. Preloaded axle wheel bearings would be LEAST LIKELY to cause
excessive tire wear. This could, however, cause premature bearing failure.
✔✔When discussing popper relief valve adjustment, a technician turns the steering
wheel to the left until the steering effort increases. He then measures the distance
between the left stop screw and the axle stop. The clearance is found to be 1/4 inch.
After checking the stop screw adjustment, the technician finds that the stop screw is
within adjustment specifications. The technician should:
