PRACTICE TEST #1 QUESTIONS &
ANSWERS(RATED A+)
A device that is used on suspensions to primarily absorb energy and dampen
suspension oscillation is called:
A. An equalizer bracket.
B. A torque rod.
C. A spring.
D. A shock absorber. - ANSWERAnswer A is incorrect. An equalizer bracket is used
to mount and house the equalizer.
Answer B is incorrect. The torque arm is used to control axle rotational forces and to
maintain and adjust axle alignment.
Answer C is incorrect. The spring assemblies distribute the vehicle load across the
frame and provide a cushion between the road surface and the vehicle.
Answer D is correct. Shock absorbers dampen spring oscillation by limiting the
effects of spring jounce and rebound.
Upon inspection, excessive play in the steering column assembly on a truck
equipped with a tilt steering column is noted. Which of the following would be the
LEAST LIKELY cause?
A. Loose lock shoe in the support
B. Faulty anti-lash spring in the centering sphere
C. Loose tilt head pivot pins
D. Column mounting bracket bolts loose - ANSWERAnswer A is incorrect. Tilt
mechanisms are designed to allow for the column to be adjusted and then held
securely in that position by the lock shoe mechanism. If the lock shoe pin and wedge
lock components are worn, excessive movement in the steering column would be the
result.
Answer B is correct. A faulty anti-lash spring might cause the housing to be loose,
but it would not cause excessive play in the steering column assembly.
Answer C is incorrect. The main housing pivots on the pivot screws located on each
side of the main housing support bracket. If the pins become worn, the steering
column would have excessive movement because the pivot pins are not holding the
column securely in place.
Answer D is incorrect. The column mounting bolt bracket secures the column. If the
bracket bolts become loose, the column would shift and have movement in the
steering column assembly.
Referring to the figure above, when checking a tie rod end for wear which procedure
is correct?
A. Use a 2 x 4 to pry on the cross tube.
B. Use a dial indicator and hydraulic jack.
C. Use up and down hand force to check for wear.
, D. Use a feeler gauge to check for wear. - ANSWERAnswer A is incorrect.
Excessive leverage might be applied using a 2 x 4 and might damage the tie rod
socket.
Answer B is incorrect. A dial gauge is used to measure wear, but a hydraulic jack
should never be used to check for movement.
Answer C is correct. Hand pressure should only be used to check for movement.
Answer D is incorrect. Wear is measured with a dial indicator, not a feeler gauge.
While discussing steering system components, Technician A states that a typical
single-axle truck system has one Ackerman arm. Technician B says that the
Ackerman arm controls turning radius. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B - ANSWERAnswer A is incorrect. There are two Ackerman arms
in the steering system.
Answer B is correct. Only Technician B is correct. Ackerman arms control the turning
radius and allow for each front wheel to rotate on different arcs while turning.
Answer C is incorrect. Only Technician B is correct.
Answer D is incorrect. Technician B is correct.
A driver complains that after hitting a bump his vehicle suddenly veers to the right or
left.
Which of these is the LEAST LIKELY cause?
A. A loose idler arm
B. A damaged relay rod
C. A worn tie rod end
D. A wheel out of balance - ANSWERAnswer A is incorrect, A loose idler arm will
cause fluctuation in the steering when striking a bump.
Answer B is incorrect. A damaged relay rod can cause veering when striking a bump
because of looseness in the ball joint end of the relay rod.
Answer C is incorrect. A worn tie rod end can cause veering when striking a bump
because of looseness in the ball joint end of the tie rod.
Answer D is correct. Wheel balance will not cause veering, only a shaking in the
steering wheel.
The alignment angle that is LEAST LIKELY to cause the greatest tire wear is:
A. Castor.
B. Turning radius.
C. Toe-in.
D. Camber. - ANSWERAnswer A is correct. Castor is a non-tire-wearing angle.
Excessive castor will be present with steerability complaints and wheel shimmy at
low speeds.
Answer B is incorrect. Turning radius usually does not cause tire wear unless the
Ackerman arms are damaged or the wrong Ackerman arm is installed.
Answer C is incorrect. Toe-in causes the greatest tire wear. Improper toe adjustment
causes rapid tire wear, which may result in tire failure, collision damage, and
personal injury. Excessive toe-out causes wear on the inside of the tire tread ribs
and a sharp feathered edge on the outside of the tread ribs. If excessive toe in is
present, the tire tread wear is reversed.