Deck 119: Wheel Alignment Principles

Question 1

When performing an alignment, which angle is the most important for tire wear?

A)SAI
B)Toe
C)Caster
D)Camber

Answer 1

Toe

Question 2

Positive camber means ________.

A)The top of the tire is tilted outward
B)The top of the tire is tilted inward
C)Either A or B
D)Both A and B

Answer 2

The top of the tire is tilted outward

Question 3

Which alignment angle is adjustable on all vehicles?

A)Caster
B)Toe
C)Camber
D)SAI

Answer 3

Toe

Question 4

Positive (+) toe is ________.

A)Toe-in
B)Toe-out

Question 5

When the top of the steering axis is tilted 2 degrees toward the rear of the vehicle, it is called ________.

A)Negative caster
B)Positive camber
C)Positive caster
D)Negative camber

Question 6

A steering dampener may be needed to reduce shimmy on vehicles that have a high positive ________.

A)Camber
B)Caster
C)Included angle
D)Toe

Question 7

If the turning radius (toe out on turns, or TOOT) is out of specification, what part or component is defective?

A)The steering arm is bent.
B)The strut is bent.
C)The control arm is bent.
D)The spindle is bent.

Question 8

Which angle determines the thrust angle?

A)Rear camber
B)Rear toe
C)Front toe
D)Front caster, SAI, and included angle

Question 9

Included angle is ________.

A)Camber + SAI
B)Camber + caster
C)Toe + camber
D)SAI + caster

Question 10

Two technicians are discussing scrub radius. Technician A says that scrub radius cannot be measured. Technician B says that scrub radius cannot be adjusted. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 11

A vehicle will pull to the side with the most (positive) camber.

Question 12

A vehicle will pull to the side with the least positive caster.

Question 13

A vehicle will pull to the side with the most (positive) toe.

Question 14

Which alignment angle is most likely to cause tire wear?

A)SAI
B)Camber
C)Toe
D)Caster

Question 15

Which alignment angle is LEAST likely to cause tire wear?

A)Camber
B)Caster
C)Toe
D)None of these are correct

Question 16

The top of a tire is tilted out when viewed from the front. This is considered to be ________.

A)Negative camber
B)Positive camber
C)Negative toe
D)Positive caster

Question 17

Excessive toe-in will cause tire wear ________.

A)In the middle of the tire
B)On the outside shoulder of the tire
C)On both tire edges
D)On the inside shoulder of the tire

Question 18

Excessive positive camber will cause tire wear ________.

A)In the middle of the tire
B)On the inside shoulder of the tire
C)On the outside shoulder of the tire
D)On both tire edges

Question 19

What is the maximum amount generally allowed for camber side-to-side difference?

A)0 degrees
B)1 degree
C)1/2 degree
D)None of these are correct

Question 20

Excessive negative camber will cause which of the following?

A)Excessive wheel bearing loading
B)Improper handling
C)Inner tire wear
D)All of these are correct

Question 21

Which angle, if unequal from side to side, is most likely to cause a pull or drift?

A)TOOT
B)Toe
C)Camber
D)None of these

Question 22

If caster is adjustable for a given vehicle, how does the technician adjust it?

A)Turning an eccentric cam
B)Changing the length of the strut rod
C)Adding or removing shims
D)All of these are ways to adjust caster

Question 23

Many manufacturers specify some degree of ________ toe.

A)Negative
B)Zero
C)Positive
D)None of these

Question 24

If REAR toe is uneven, the vehicle will pull to the side with the ________ toe-in.

A)Most
B)Least

Question 25

What term describes the inward tilt of the steering axis?

A)SAI
B)King pin inclination
C)Both A and B
D)Neither A nor B

Question 26

Technician A says that the purpose of SAI is to provide an upper suspension pivot location that causes the spindle to travel in an arc when turning. Technician B says that RWD vehicles typically have a greater SAI angle than FWD vehicles. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 27

Which statement(s) is/are TRUE about included angle?

A)It is only measured on the front suspension
B)It is calculated by adding camber and SAI
C)Both A and B
D)Neither A nor B

Question 28

Technician A says that measuring SAI and included angle can help in diagnosing poor cradle alignment. Technician B says that alignment angles can often reveal bent suspension or steering components. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 29

What term refers to the distance between a line through the steering axis and the centerline of the wheel at the contact point with the road surface?

A)Toe-out on turns
B)SAI
C)Included angle
D)Scrub radius

Question 30

Which of these statements is TRUE regarding scrub radius?

A)It cannot be adjusted
B)It can be measured
C)Both A and B
D)Neither A nor B

Question 31

What alignment angle is shown in this drawing?

A)Thrust angle
B)Toe out on turns
C)Total toe
D)Center line

Question 32

What alignment angle is shown in this drawing?

A)Total toe
B)Thrust angle
C)Center line
D)Rear camber

Question 33

What alignment angle is shown in this drawing?

A)Positive toe
B)Positive camber
C)Positive caster
D)Negative camber

Question 34

What alignment angle is shown in this illustration?

A)Negative caster
B)Positive toe
C)Positive caster
D)Positive camber

Question 35

What alignment angle is shown here?

A)Toe in
B)Caster
C)Toe out
D)Camber