Question 1

Excessive toe-out on the right-rear wheel causes all of these problems EXCEPT:
A) Feathered tire tread wear
B) Steering pull to the left
C) Incorrect thrust angle
D) Incorrect right-rear camber angle

Accepted Answer

Excessive toe-out on the right-rear wheel causes feathered tire tread wear, steering pull to the left, and incorrect thrust angle. However, it does not affect the right-rear camber angle.

Question 2

The imaginary line extending forward at a 90 degree angle from the center of the rear axle is called what?

Accepted Answer

The answer of The imaginary line extending forward at a...

Question 3

What effect does negative camber have on tire tread wear?

Accepted Answer

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Question 4

All of these statements about excessive negative camber on the right-front wheel are true EXCEPT:
A) It causes wear on the inside edge of the tire tread
B) It causes harsh ride quality
C) It may cause steering pull to the left
D) It causes an improper included angle

Accepted Answer

Excessive negative camber on the right-front wheel primarily affects tire wear and steering dynamics, not ride quality. Harsh ride quality is more often related to suspension components like shocks, struts, and springs rather than wheel alignment angles such as camber.

Question 5

All of these defects may cause improper rear wheel toe EXCEPT:
A) A bent strut
B) A bent rear spindle
C) A bent trailing arm
D) A bent rear tie rod

Accepted Answer

Toe is controlled by the rear tie rod and trailing arm. A bent strut or rear spindle would affect rear wheel camber or toe-in/out, but not specifically toe.

Question 6

Steering pull to the right occurs only when braking. The most likely cause of this problem is:
A) Excessive positive camber on the left-front wheel
B) Excessive positive caster on the right-front wheel
C) Excessive toe-out on the right-front wheel
D) A loose strut rod bushing on the right-front suspension

Accepted Answer

A loose strut rod bushing on the right-front suspension can cause uneven braking pressure, which can result in the steering pulling to the right only when braking. Excessive positive camber on the left-front wheel, excessive positive caster on the right-front wheel, and excessive toe-out on the right-front wheel can cause steering pull even when not braking.

Question 7

When one of the front wheels strikes a road irregularity, the steering suddenly veers to the right or left on a vehicle with a parallelogram steering linkage. The most likely cause of this problem is:
A) Worn-out shock absorbers
B) A weak stabilizer bar
C) Sagged coil springs
D) Center link that is not level

Accepted Answer

A parallelogram steering linkage requires that the center link be level for proper steering alignment. If the center link is not level, it can cause the sudden veering of the steering wheel when one of the front wheels strikes a road irregularity. Worn-out shock absorbers, a weak stabilizer bar, and sagged coil springs can cause other steering and suspension issues, but are not the most likely cause of this specific problem.

Question 8

Technician A says a jack-and-hold feature on some computer wheel aligners allows the technician to lift one side of the suspension with a jack while maintaining accurate alignment readings on the screen. Technician B says when using a computer wheel aligner, the technician may print out any screen at any time. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct in stating that some computer wheel aligners have a jack-and-hold feature that allows the technician to lift one side of the suspension while maintaining accurate alignment readings on the screen. Technician B is also correct in stating that when using a computer wheel aligner, the technician may print out any screen at any time. Therefore, both technicians are correct.

Question 9

Technician A says front wheel toe should be measured with the front wheels in the straight-ahead position. Technician B says excessive front wheel toe-in causes steering pull to the right. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Technician A says front wheel toe should...

Question 10

Excessive toe-in on the left-rear wheel moves the thrust line in what direction compared to the geometric centerline of the vehicle?

Accepted Answer

The answer of Excessive toe-in on the left-rear wheel moves...

Question 11

Technician A says the fuel tank should be full when performing a wheel alignment. Technician B says after the front struts are replaced, a wheel alignment should be performed. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct as a full fuel tank helps ensure an accurate measurement of vehicle height, which affects the alignment. Technician B is also correct as replacing the front struts can affect the suspension and steering geometry, which requires a wheel alignment to correct. Therefore, both A and B are correct.

Question 12

During a road test on a front-wheel drive vehicle, it is determined that the vehicle pulls right after a right turn, and pulls left after a left turn. The most likely cause of this condition is:
A) A binding upper strut bearing
B) Excessive lower ball joint play
C) Excessive positive caster
D) A misaligned subframe/cradle assembly

Accepted Answer

A binding upper strut bearing can cause the steering to not return properly after a turn, leading to the vehicle pulling in the direction of the last turn made. This is because the strut bearing allows the strut to pivot smoothly as the wheels turn, and if it's binding, it can hinder the wheels' ability to return to a straight position.

Question 13

When measuring front suspension caster angles, what must you do to the vehicle?

Accepted Answer

The answer of When measuring front suspension caster angles, what...

Question 14

Technician A says on many rear-wheel drive cars, the front wheels are set to a slight toe-in position. Technician B says the driving forces on a rear-wheel drive car tend to move the front wheels to a toe-in position. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Technician A says on many rear-wheel drive...

Question 15

What effect does negative front wheel caster have on the vehicle?

Accepted Answer

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Question 16

What effect does lowering the rear suspension height have on front wheel caster?

Accepted Answer

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Question 17

All of these statements about negative caster are true EXCEPT:
A) It reduces steering effort
B) It decreases steering wheel return force
C) It decreases directional stability
D) It causes harsh ride quality

Accepted Answer

Negative caster can influence steering dynamics and stability, but it does not directly cause a harsh ride quality. Ride quality is more directly affected by suspension components and tire characteristics.

Question 18

Technician A says if a front wheel has positive camber, the camber line is at the true vertical centerline of the tire and wheel. Technician B says if the left-front wheel has excessive positive camber and the right-front wheel camber is correct, the steering pulls to the left. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician B is correct. Excessive positive camber on the left-front wheel will cause the tire to tilt outward, creating a pulling effect in the steering towards the left. Technician A's statement is incorrect since the camber line should be perpendicular to the ground, not necessarily centered on the tire and wheel.

Question 19

What term refers to the tendency of a vehicle to travel in a straight-ahead direction without being steered?

Accepted Answer

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Question 20

Technician A says if the front wheels have a toe-out condition, the distance between the front edges of the tires is greater than the distance between the rear edges of the tires. Technician B says many front-wheel drive cars have a slight toe-out setting because driving forces tend to move the front wheels to a toe-in position. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct in describing what a toe-out condition is - where the distance between the front edges of the tires is greater than the distance between the rear edges of the tires. 
Technician B is also correct in saying that many front-wheel drive cars have a slight toe-out setting because the driving forces tend to move the front wheels to a toe-in position. This is due to the fact that during acceleration, weight is shifted to the rear of the vehicle, causing the front wheels to toe-in.  So, both technicians are correct.

Quiz 9: Four Wheel Alignment Part 1 Primary Angles

Excessive toe-out on the right-rear wheel causes all of these problems EXCEPT:

The imaginary line extending forward at a 90 degree angle from the center of the rear axle is called what?

What effect does negative camber have on tire tread wear?

All of these statements about excessive negative camber on the right-front wheel are true EXCEPT:

All of these defects may cause improper rear wheel toe EXCEPT:

Steering pull to the right occurs only when braking. The most likely cause of this problem is:

When one of the front wheels strikes a road irregularity, the steering suddenly veers to the right or left on a vehicle with a parallelogram steering linkage. The most likely cause of this problem is:

Technician A says front wheel toe should be measured with the front wheels in the straight-ahead position. Technician B says excessive front wheel toe-in causes steering pull to the right. Who is correct?

Excessive toe-in on the left-rear wheel moves the thrust line in what direction compared to the geometric centerline of the vehicle?

Technician A says the fuel tank should be full when performing a wheel alignment. Technician B says after the front struts are replaced, a wheel alignment should be performed. Who is correct?

During a road test on a front-wheel drive vehicle, it is determined that the vehicle pulls right after a right turn, and pulls left after a left turn. The most likely cause of this condition is:

When measuring front suspension caster angles, what must you do to the vehicle?

Technician A says on many rear-wheel drive cars, the front wheels are set to a slight toe-in position. Technician B says the driving forces on a rear-wheel drive car tend to move the front wheels to a toe-in position. Who is correct?

What effect does negative front wheel caster have on the vehicle?

What effect does lowering the rear suspension height have on front wheel caster?

All of these statements about negative caster are true EXCEPT:

Technician A says if a front wheel has positive camber, the camber line is at the true vertical centerline of the tire and wheel. Technician B says if the left-front wheel has excessive positive camber and the right-front wheel camber is correct, the steering pulls to the left. Who is correct?

What term refers to the tendency of a vehicle to travel in a straight-ahead direction without being steered?