Deck 67: Wheel Alignment Fundamentals

Question 1

13)While having a discussion, Technician A says that if there is a tire blowout on the left side of a front-wheel-drive vehicle with positive scrub radius, the tire will pull hard to the left. Technician B says that it will pull hard to the right. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Answer 1

A

Question 2

2)Bent steering linkage will cause the toe setting to change. This affects the position of the steering wheel, which will now be off-center when traveling straight.

Answer 2

True

Question 3

3)Rolling tires tend to toe out when driving on rear-wheel-drive (RWD) vehicles.

Answer 3

True

Question 4

8)Which of the following statements is LEAST-Likely true?

A) When the front wheels on a car have different caster settings, the car will pull toward the side with the most positive caster.
B) Negative caster is when the steering axis tilts forward, moving the point of load behind the wheel.
C) During a turn, caster can cause the spindle to move either toward or away from the ground, depending on whether the caster is negative or positive.
D) Caster is a directional control angle but does not cause tire wear when the vehicle is going straight.

Question 5

17)Every 1/16" of toe-in results in 11 feet per mile of ____________________.

Question 6

10)____ is the amount that the spindle support arm leans in at the top. It helps the vehicle steer straight ahead.

A) Caster
B) Steering axis inclination
C) Tracking
D) Cradle

Question 7

1)Toe is a comparison of the distances between the fronts and the rears of a pair of tires.

Question 8

16)____________________ is the alignment angle most responsible for tire wear.

Question 9

6)All of the following statements are true EXCEPT:

A) a cambered tire tends to roll in a circle, as if it were at the large end of a cone.
B) positive camber is when a tire tilts inward at the top.
C) the camber angle is controlled by the position of the control arms or struts.
D) unequal camber between tires on opposite sides of the vehicle can cause a steering pull to the side with the most camber.

Question 10

12)The term MOST-Likely used to describe the distance at the road surface between the centerline of true vertical at the center of the tire tread and the steering axis pivot centerline is:

A) scrub radius
B) tracking
C) oversteer
D) set-back

Question 11

4)A change in toe setting does not affect the position of the steering wheel.

Question 12

9)All of the following statements are true EXCEPT:

A) wheels with equal caster will cancel each other out, and the vehicle will steer straight.
B) too much positive caster can cause front-wheel shimmy.
C) negative caster aligns the steering axis with bumps encountered in the road, so road shock is more likely to be felt through the steering wheel.
D) too much positive caster can cause cupped tire wear if the resulting shimmy is allowed to continue.

Question 13

20)The combination of SAI and camber is called the ____________________.

Question 14

14)When a vehicle makes a turn, the outside wheel must travel in a wider arc than the inside wheel. The alignment angle that controls this is MOST-Likely called:

A) set-back
B) scrub radius
C) turning radius
D) tie-rod

Question 15

19)____________________ is a measurement of the camber angle as it changes during a turn.

Question 16

18)____________________ is the inward or outward tilt of a tire at the top

Question 17

7)____ is the forward or rearward tilt of the spindle support arm.

A) Scuff
B) Camber
C) Cradle
D) Caster

Question 18

11)Which of the following statements is LEAST-Likely true?

A) Scrub radius is a factor of steering axis inclination.
B) Scrub radius is the pivot point for the front tire's footprint.
C) The junction of the steering axis and centerline pivot point is normally below the surface of the road.
D) RWD vehicles generally have negative scrub radius.

Question 19

15)While having a discussion, Technician A says that when a vehicle has four-wheel alignment capability, the tendency to oversteer can be minimized by adjusting the camber on the rear wheels to a more negative setting than the front wheels. Technician B says that when tires of different profiles are installed on the same vehicle, the tires of the lower height are installed on the rear to prevent oversteer. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 20

5)Negative camber is when a tire tilts outward at the top.

Question 21

23)What are some of the possible causes of incorrect scrub radius?

Question 22

25)What is implied by the term dog tracking?

Question 23

24)Provide definitions for the following terms: wheel base and tracking.

Question 24

21)What are some of the possible causes of incorrect toe?

Question 25

22)What is the function of steering axis inclination (SAI)?