Deck 3: Related Systems: Tire, Wheels, Bearings, and Suspensions

Question 1

Technician A says if you are troubleshooting a brake pull problem and cannot pinpoint the cause, try driving the car in reverse and applying the brakes. Technician B says if the car pulls in opposite directions while braking in forward and reverse, look closely for loose or broken suspension and steering components. Who is correct?

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

Answer 1

C

Question 2

Tire load ratings are being discussed. Technician A says bias ply tires can carry more load than radial tires. Technician B says most passenger car and light truck tires were made with two, four, six, or eight plies. Who is correct?

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

Answer 2

C

Question 3

Most torque sticks (sockets)will not work correctly unless the impact wrench can produce at least ______ foot-pounds of torque.

A)50
B)200
C)100
D)250

Answer 3

D

Question 4

Technician A says a dial indicator should be used to check tire and wheel lateral runout. Technician B says a dial indicator should be used to check tire and wheel radial runout. Who is correct?

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

Question 5

Technician A says wheel offset is  the distance between the centerline of the rim and the mounting plane of the wheel. Technician B says the scrub radius is the distance from the tire contact patch centerline to the point where the steering axis intersects the road. Who is correct?

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

Question 6

Technician A says a vehicle that has the tread wear indicators showing completely will likely hydroplane on wet roads. Technician B says the same condition should not affect braking on dry pavement. Who is correct?

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

Question 7

Technician A says the wheel seal is removed with a seal puller. Technician B says the inner bearing is removed after the seal is removed. Who is correct?

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

Question 8

Technician A says caster is the inward or outward tilt of the wheel measured from top to bottom and viewed from the front of the car. Technician B says camber is the backward or forward angle of the steering axis viewed from the side of the car. Who is correct?

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

Question 9

Technician A says the best possible traction and braking performance can be had with the treadless, slick tires used on race cars. Technician B says all street tires have a tread pattern of ribs and grooves that lets water be displaced from under the tire while still maintaining good traction. Who is correct?

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

Question 10

Tire sizes are based on all of the following EXCEPT:

A)weight
B)inside diameter
C)section width
D)aspect ratio

Question 11

Technician A says a typical service for double-row ball bearings is cleaning and packing. Technician B says tapered roller bearing services are usually part of a complete brake job. Who is correct?

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

Question 12

Technician A says a wheel-mounted pressure sensor uses wireless communication to send the pressure signal to a PSB computer, which in turn, illuminates the warning light or icon in the dash. Technician B says factory sensors are usually installed in place of the regular tire valve stem. Who is correct?

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

Question 13

Technician A says rim width is measured between the inside surfaces of the rim flanges. Technician B says every tire has two rim widths on which it can be mounted. Who is correct?

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

Question 14

In the following figure, which of the two items (A or B)indicates a worn ball joint?

A)Item A
B)Item B
C)Both are worn
D)Neither are worn

Question 15

Each of the following is part of the vehicle's gross vehicle weight EXCEPT:

A)passengers.
B)springs.
C)tires.
D)all fluids removed.

Question 16

Technician A says it is acceptable to rely on visual inspection to determine if a tire is inflated properly. Technician B says that both over-inflation and under-inflation affect brake performance.

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

Question 17

What is the most likely cause of a vehicle pulling or drifting to one side when the brake is off?

A)tire inflation
B)excessive positive camber
C)steering mechanism
D)suspension problems

Question 18

Technician A says problems in the steering and suspension systems that affect braking usually are related to a pull to one side or the other. Technician B says braking problems related to steering, suspension, and wheel alignment usually involve back-end components. Who is correct?

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

Question 19

Technician A says the information presented in the following figure is based on recommendations from the Rubber Manufacturers Association. Technician B says one of the two diagrams can be found on the vehicle's tire placard. Who is correct?

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

Question 20

Tire construction is being discussed. Technician A says the carcass of a tire consists of steel beads around the rim and layers of cords or plies that are bonded together to give the tire its shape and strength. Technician B says casing is the layer of rubber that contacts the road and contains a distinctive pattern to provide the desired traction. Who is correct?

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

Question 21

Toe-out on turns is:

A)adjustable turning angle on steering axle.
B)turning radius.
C)measured in degrees by turning one wheel a specified amount and then measuring the angle of the other wheel.
D)both B and C.

Question 22

Technician A says improper toe will feather wear the tread and may cause steering problems. Technician B says if the centerlines of the tires are equal, the wheels are toed out. Who is correct?

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

Question 23

What determines the tread contact patch's friction ability?

Question 24

When the plies are parallel to the tire's radius, then the tire is of what type construction?

Question 25

To inspect loaded ball joints that do not have wear indicators, the technician must:

A)raise the vehicle and support the lower control arms as far outboard as possible.
B)raise the vehicle and shake the tire front and rear.
C)raise the vehicle and support the control arms as far as possible to the wheel assembly.
D)either A or C.

Question 26

Technician A says the thrust angle is the angle between the geometric centerline and the thrust line. Technician B says the thrust line is the direction in which the rear wheels are pointing. Who is correct?

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

Question 27

Why is the caster on the rear wheels usually zero? What situation may require some rear wheel caster?

Question 28

Define scrub radius.

Question 29

Define carcass.

Question 30

Technician A says when the pivot point is inside the tire contact point, the scrub radius is positive. Technician B says when the pivot point is outside the tire contact point, the scrub radius is negative. Who is correct?

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

Question 31

A vehicle pulls towards the left while driving. Which of the following would be the most likely cause?

A)Left camber .5 degrees, right camber .75 degrees
B)Left camber 2 degrees, right camber .25 degree
C)Left caster 3 degrees, right caster 1 degree
D)Left toe .16 degrees, right toe .2 degrees

Question 32

Lower-profile tires have an aspect ratio that is lower than:

A)10
B)40
C)20
D)50

Question 33

Define geometric centerline.

Question 34

Define casing.

Question 35

Define thrust line and its relationship to steering and braking.

Question 36

Technician A says improper toe on one rear wheel will create a thrust angle change in the rear axle. Technician B says setback can be the result of a collision. Who is correct?

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

Question 37

Technician A says the first check of the suspension should be with the vehicle supported on a lift. Technician B says the first check of the suspension should be the springs through ride height. Who is correct?

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

Question 38

Explain why a worn ball joint may cause steering and braking problems.

Question 39

Technician A says that too much torque on the lug nuts can warp a brake rotor. Technician B says that it is better to add additional torque to the lug nuts to prevent the wheel from falling off. Who is correct?

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

Question 40

Define wheel alignment.

Question 41

Belted bias ply tires use the same type, angle and design belts as radial tires.

Question 42

The tire placard is always mounted in the glove compartment.

Question 43

Three basic kinds of wheel bearings are used on late-model cars and light trucks: tapered roller bearings, straight roller bearings, and ball bearings.

Question 44

The vehicle manufacturer's recommended inflation pressures are usually more than the maximum cold inflation pressure.

Question 45

Excessive wobble is called __________.

Question 46

The P-metric system of measurement is an alpha-numeric size identification for tires.

Question 47

Load index numbers range from 639 to 1984.

Question 48

A typical torque stick requires a  wrench  capable of least ____________________ foot-pounds of torque at ____________________ psi of air pressure.

Question 49

Tire load range is the load-carrying capacity of a tire, expressed by the letters "A" through "L."

Question 50

Because of the nonflexible sidewalls, bias ply tires give the best braking performance.

Question 51

The belts of cords are placed parallel to the tread on a radial ply design.

Question 52

The ____________________ contacts the road and contains a distinctive pattern.

Question 53

The cords in a radial ply tire run at _____ degrees to the tread.

Question 54

The ____________________ list the UTQG indicators.

Question 55

If a speed rating letter is used, it will be included in the tire size right after the aspect ratio.

Question 56

All tire sizes are based on three dimensions: the inside diameter, the section width, and the ______________.

Question 57

Of the three types of tire construction ____________________ have the best braking performance.

Question 58

Excessive runout can contribute to pedal ___________.

Question 59

Road force balancers can detect lateral rolling forces in tires that result in a tire pull as well as radial and lateral runout.

Question 60

Some high-performance tires have a(n)____________________ which means that each tire can be installed on only one side of the car.

Question 61

The _______ character in the P-metric system indicates the type of service for which the tire is designed.

Question 62

Scrub radius is a design factor that is engineered for each vehicle. _________ scrub radius is a more common design because it tends to push the tires inward as they roll.