Question 1

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

Accepted Answer

Camber is the angle of the wheels in relation to the vertical axis of the vehicle. If camber is unequal from side to side, it can cause the vehicle to pull or drift to one side.

Question 2

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

Accepted Answer

All of these methods (turning an eccentric cam, changing the length of the strut rod, and adding or removing shims) are common ways to adjust caster in various vehicle suspension systems.

Question 3

Many manufacturers specify some degree of ________ toe.

Accepted Answer

Many manufacturers specify some degree of positive toe to help ensure straight-ahead stability of the vehicle and to minimize tire wear. Positive toe means the front of the tires are closer to each other than the rear of the tires, which can help the vehicle drive straighter.

Question 4

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

Accepted Answer

If the rear toe is uneven, the vehicle will pull towards the side with the most toe-in because that wheel has more resistance and affects the vehicle's direction.

Question 5

What term describes the inward tilt of the steering axis?

Accepted Answer

The inward tilt of the steering axis is described by both terms: SAI (Steering Axis Inclination) and King Pin Inclination. These terms refer to the same concept in vehicle alignment, indicating the angle between the steering axis and the vertical line when viewed from the front or rear of the vehicle.

Question 6

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?

Accepted Answer

Technician A is correct because Steering Axis Inclination (SAI) is indeed designed to make the spindle travel in an arc during turning, which helps in vehicle stability and steering returnability. Technician B is incorrect because FWD vehicles typically have a greater SAI angle than RWD vehicles, not the other way around. This is due to the design differences in the suspension systems of FWD and RWD vehicles.

Question 7

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

Accepted Answer

The answer of Which statement(s) is/are TRUE about included angle?
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Question 8

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?

Accepted Answer

Both technicians are correct. Measuring Steering Axis Inclination (SAI) and included angle can indeed help in diagnosing issues such as poor cradle alignment, while alignment angles can reveal bent suspension or steering components, indicating damage or misalignment.

Question 9

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?

Accepted Answer

Scrub radius is the term that refers to the distance between the line through the steering axis and the centerline of the wheel at the contact point with the road surface. It affects how the wheel responds to road surface irregularities and steering inputs.

Question 10

Which of these statements is TRUE regarding scrub radius?

Accepted Answer

The answer of Which of these statements is TRUE regarding...

Question 11

What alignment angle is shown in this drawing?

Accepted Answer

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Question 12

What alignment angle is shown in this drawing?

Accepted Answer

The answer of What alignment angle is shown in this...

Question 13

What alignment angle is shown in this drawing?

Accepted Answer

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Question 14

What alignment angle is shown in this illustration?

Accepted Answer

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Question 15

What alignment angle is shown here?

Accepted Answer

The answer of What alignment angle is shown here? 
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Quiz 119: Wheel Alignment Principles

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

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

Many manufacturers specify some degree of ________ toe.

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

What term describes the inward tilt of the steering axis?

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?

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

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?

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?

Which of these statements is TRUE regarding scrub radius?

What alignment angle is shown in this drawing?

What alignment angle is shown in this drawing?

What alignment angle is shown in this drawing?

What alignment angle is shown in this illustration?

What alignment angle is shown here?