SOLUTIONS GUARANTEE A+
✔✔A truck tire is found to have been run in an underinflated condition. Technician A
says the tire may be damaged internally and should be removed from the truck and
inspected. Technician B says that a tire should be balanced prior to checking wheel
runout. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - ✔✔Answer A is correct. Only Technician A is correct. When a truck
tire has been run in a very underinflated condition, you must remove it from the truck,
inspect the casing for damage, and properly remount it.
Answer B is incorrect. Before balancing a tire, the technician should check wheel
runout.
Answer C is incorrect. Only Technician B is correct.
Answer D is incorrect. Technician B is correct.
✔✔If the power steering gear poppet valves are misadjusted, which of the following
conditions may be exhibited?
A. Steering wheel kick
B. Reduced wheelcut
C. Directional pull
D. Non-recovery - ✔✔Answer A is incorrect. The misadjusted power steering gear
poppet valves will not cause steering wheel kick. Wheel kick or bump steer occurs when
the steering wheel reacts to a bump that the wheels hit.
Answer B is correct. Misadjusted power steering gear poppet valves will cause reduced
wheelcut.
Wheelcut occurs when the steering wheel cannot be rotated far enough in a right or left
turn. The poppet valves provide a hydraulic pressure relief on the power side of a turn,
thus reducing the power assist and misadjusted puppet valves could prevent the wheel
from rotating far enough.
Answer C is incorrect. The misadjusted power steering gear poppet valves will not
cause directional pull.
Answer D is incorrect. The misadjusted power steering gear poppet valves will not
cause non-recovery of the steering.
✔✔A vehicle is found to be "dog tracking." Upon inspection, the technician finds no
issues with worn components and says the axle alignment should be checked. Which is
the LEAST LIKELY method to use for checking axle alignment?
A. Light and laser beam systems
B. Computer-controlled sensor systems
C. Straightedge and tram method
D. String and stick method - ✔✔Answer A is incorrect. Light and laser beam systems
are an acceptable method.
, Answer B is incorrect. Computer-controlled sensor systems are an acceptable method.
Answer C is incorrect. Straightedge and tram method is an acceptable method.
Answer A is correct. String and stick method is very inaccurate.
✔✔Technician A says excessive load/ weight on a steer axle could not cause abnormal
tire wear or steering issues. Technician B says excessive load/ weight on one wheel
end of the steer axis could cause abnormal tire wear or steering issues. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - ✔✔Answer A is incorrect. Technician B is also correct.
Answer B is incorrect. Technician A is also correct.
Answer C is correct. Both Technicians are correct. Steer axle alignment geometry is
designed with the axle weight rating in mind. Excessive steer axle weight might change
the degree of camber at the front wheel assemblies. This would cause tire wear.
Excessive load/ weight might also cause steerability issue with increased steering effort.
Excessive weight on just one wheel end might cause the vehicle to pull and would also
affect the camber angle at that position.
Answer D is incorrect. Both Technicians are correct.
✔✔Which of the following is the acceptable method for removing a steering wheel from
the steering shaft?
A. Use a steering wheel puller.
B. Firmly grasp with both hands and pull.
C. Use two pry bars and remove.
D. Strike the center shaft with a hammer to drive it out of the steering wheel. -
✔✔Answer A is correct. The only acceptable method to remove a steering wheel is to
use a puller.
Answer B is incorrect. The steering wheel can't be removed using this method.
Answer C is incorrect. Using pry bars may damage other steering column components.
Answer D is incorrect. Striking the shaft with a hammer will damage the shaft and or
retaining nut threads
✔✔When performing kingpin bushing wear dial indicator checks, what is the wear limit?
A. 0.010 inches
B. 0.100 inches
C. 0.030 inches
D. 0.025 inches - ✔✔Answer A is correct. The wear limit is 0.010 inches.
Answer B is incorrect. A measurement of 0.100 is much too high, and would cause
noise in the spindle assembly and steerability issues.
Answer C is incorrect. Kingpin and kingpin bushing replacement might be warranted if
the indicator reading was 0.030 inches.
Answer D is incorrect. 0.025 inches is over the maximum wear limit specification.
Further inspection would be warranted to determine the cause.