Wheel Alignment

Question 1

List three items of personal safety equipment

Answer 1

personal protective Clothing (PPE) safety glasses and safety boots

Question 2

What is wheel alignment?

Answer 2

Wheel alignment is the correct relationship of all four wheels of the vehicle

Question 3

Why is wheel alignment important?

Answer 3

Incorrect wheel alignment will cause tyre wear and also the effect steering of the vehicle

Question 4

Explain centreline of steering axis?

Answer 4

Steering axis is a line through the ball joints of the steering knuckle on which the steering knuckle turns for steering

Question 5

What is a ball joint?

Answer 5

In an automobile, ball joints are spherical bearings that connect the control arms to the steering knuckles.

Question 6

What is the pivot points?

Answer 6

Positivecasterangle. Thepivot pointsof the steering are angled such that a line drawn through them intersects the road surface slightly ahead of the center of the contact patch of the tire on the pavement by a distance called trail. … This is called crosscaster and the difference is called the spread.

Question 7

Identify the five main angles related to wheel alignment?

Answer 7

1. Custer
2. Camber
3. Steering-axis inclination(SAI)
4. Toe(Toe-out and toe-in)
5. toe-out-on-turns

Question 8

What are six steps to adjust the toe on rack and pinion steering?

Answer 8

1. Hold the tie rods with one spanner and loosen the lock nut with another
2. loosen the clamp on the outer end of the boot or bellows, so that it does not twist when the tie rod is being turned
3. turn the tie rods to increase or decrease their length as required both tie rods have right threads (the inner ball joint allows the tie rod to be turned)
4. adjust both tie rods by an equal amount
5. after completing the adjustment the tighten the locknut
6. straighten the boot and tightened the clamp

Question 9

what are three sets of operations when using wheel alignments?

Answer 9

1. pre alignment checks
2. setting up the vehicle and/or setting up the equipment on the vehicle
3. checking the various angles and making the necessary adjustments

Question 10

what is meant by the term set back?

Answer 10

misalignment of one front wheel to the opposite wheel

Question 11

what is meant by the term thrust line?

Answer 11

misalignment of the rear axle to centreline of the vehicle

Question 12

why is the caster adjusted first?

Answer 12

the sequence starts with the caster because any adjustment of the caster can effect the camber and toe

Question 13

what is the sequence for carrying out a wheel alignment?

Answer 13

1. Caster
2. Camber
3. Toe
4. toe out on turns

Question 14

list three precautions that should be taken when parking a vehicle during wheel adjustments?

Answer 14

1. apply the hand brake
2. chock the wheels
3. put vehicle in park or neutral

Question 15

how should the bodywork be protected when checking a vehicle during a wheel alignment?

Answer 15

guard covers

Question 16

list three precautions when jacking a vehicle on the floor?

Answer 16

1. Use jack stands
2. Check the capacity of the jack
3. chock the wheels and make sure the surface is is a solid flat ground