Deck 4: Wheel Bearings

Question 1

Technician A says a bearing cage may be called a separator. Technician B says needle roller bearings are designed to carry radial loads. Who is correct?

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

Answer 1

C

Question 2

Excessive bearing load may cause premature bearing failure.

Answer 2

True

Question 3

Technician A says round roller ball bearings can withstand high thrust loads. Technician B says a tapered roller bearing can withstand high angular bearing loads. Who is correct?

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

Answer 3

B

Question 4

Tapered roller bearings and their matching inner races must be replaced as a set.

Question 5

The garter spring should always face toward the flow of lubricant when a lip seal is installed.

Question 6

Technician A says premature bearing failure may be caused by misalignment of the bearing and bearing cup. Technician B says bearing brinelling occurs when driving the vehicle at high speeds. Who is correct?

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

Question 7

All of these statements about the rolling elements in a tapered roller bearing are true EXCEPT:

A) They have precision machined surfaces
B) They have the same diameter at each end
C) They are evenly spaced by the separator
D) They are mounted between the inner and outer races

Question 8

Technician A says excessive front wheel bearing endplay may cause steering wander. Technician B says a defective front wheel bearing may cause a growling noise while cornering. Who is correct?

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

Question 9

A long, tapered brass punch may be used to remove the bearing races from a serviceable hub.

Question 10

When servicing an integral wheel bearing hub, the hub nut should be tightened with an impact wrench.

Question 11

A radial bearing load occurs when weight is applied horizontally to the bearing.

Question 12

A defective inner drive axle joint produces a clicking noise when cornering at low speeds.

Question 13

Bearings that are shielded on both sides may be washed with solvent, repacked, and reinstalled in the vehicle.

Question 14

Technician A says the purpose of a bearing may be to support and guide a pivot. Technician B says the purpose of a bearing may be to support a load and reduce friction. Who is correct?

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

Question 15

All of these statements about lip seals are true EXCEPT:

A) They keep lubricant in the bearing
B) They keep dirt out of the bearing
C) They may have a spring-loaded lip
D) They can be installed in any direction

Question 16

When servicing wheel bearings, a cotter pin may be reused.

Question 17

On an integral wheel bearing hub assembly that is bolted to the steering knuckle, the maximum allowable endplay is:

A) 0.005 inch
B) 0.008 inch
C) 0.010 inch
D) 0.015 inch

Question 18

A bearings may overheat if the wheel bearing-adjusting nut is not adjusted properly to provide the correct bearing preload.

Question 19

Which of the following should you do when servicing tapered roller-type wheel bearings?

A) Reinstall the old hub seal
B) Spin the bearings with compressed air
C) Leave metal burrs in the hub seal recess
D) Clean, inspect, and repack the bearings

Question 20

A dial indicator is used to measure integral wheel bearing hub endplay.

Question 21

What are the most common grease designation used in automotive shops?

Question 22

A needle roller bearing is not designed to carry what type of loads?

Question 23

When inspecting and servicing front wheel bearings  on front-wheel-drive cars:

A) When the steering knuckle contains two tapered  roller bearings, the torque on the drive axle nut d oes not affect bearing endplay.
B) Some front wheel bearings mounted in the  steering knuckle contain two tapered roller bearings  with a split inner race.
C) Some one-piece front wheel bearing hubs are  bolted to the front strut.
D) In a one-piece front wheel bearing hub, the outer  end of the drive axle is splined to the outer b earing race.

Question 24

When two separate tapered roller bearings are located in a front hub assembly on a front-wheel-drive vehicle, the wheel bearing endplay adjustment is provided by:

A) Wheel lug nut torque
B) Ball joint nut torque
C) The bearing race adjuster sleeve
D) Hub nut torque

Question 25

All of the following statements are correct EXCEPT:

A) NLGI sets the standards for testing greases.
B) The prefix GC is the highest designation for  automotive wheel bearing greases.
C) The prefix LB is the highest designation for automotive  chassis greases.
D) Greases are named for their thickening agent.

Question 26

What type of loads can be carried by a tapered roller bearing?

Question 27

When must an integral wheel bearing hub assembly be replaced?

Question 28

The front wheel bearings are being replaced on a front-wheel-drive vehicle with the wheel bearings pressed into the steering knuckle. Technician A says the vehicle should be driven a short distance in the shop before the front hub nuts are torqued to specifications. Technician B says the hub nut torque supplies the correct wheel bearing adjustment. Who is correct?

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

Question 29

What are the two most important factors for tapered roller bearing performance and longevity?

Question 30

List common lip seal designs.

Question 31

Repeated rear axle seal failure occurs in a rear-wheel-drive vehicle. Technician A says the axle shaft may be scored in the seal contact area. Technician B says the axle housing may be distorted in the seal mounting area. Who is correct?

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

Question 32

A cylindrical ball bearing is designed primarily to withstand what type of loads?

Question 33

A tapered roller bearing has:

A) Excellent ability to carry radial, thrust, and angular loads
B) Been used primarily on sub-compact vehicle front axles
C) Ability to carry radial loads only
D) Ability to carry thrust loads only

Question 34

What are bearings designed to do?

Question 35

What are the three types of loads a bearing may be subjected to?

Question 36

When are seals without garter springs used?

Question 37

A front-wheel-drive vehicle has a clicking noise in the front of the vehicle when cornering below 20 mph. The front end of the vehicle is lifted and supported on safety stands. With the right front lower control arm lifted with a floor jack, the clicking noise is heard, but with both front wheels dropped downward, the noise disappears. Technician A says the right-front outer drive axle joint is worn. Technician B says a worn inner drive axle joint could cause a vibration during acceleration. Who is correct?

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

Question 38

There is a growling noise coming from the right-rear of a front-wheel-drive vehicle. The noise is more pronounced on left turns. What is the most likely cause?

A) A worn right rear wheel bearing
B) A broken stabilizer bar
C) A worn shock absorber
D) Improperly torqued suspension bushings

Question 39

A spring-loaded seal compensates for ALL of these conditions EXCEPT:

A) Wear in seal bore and housing
B) Seal lip wear
C) Shaft movement
D) Bore eccentricity

Question 40

What type of load will the front wheel bearings carry when a vehicle is turning a corner?

Question 41

Explain the purposes of proper bearing lubrication.

Question 42

Describe a thrust bearing load.

Question 43

Explain the purpose of the sealer on the outside surface of a seal housing.

Question 44

Describe three basic steps when adjusting endplay on a tapered wheel bearing serviceable pack.

Question 45

Explain the design and purpose of bearing seals.

Question 46

During a front-drive axle removal procedure, define the component that must be marked when removing knuckle-to-strut mounting bolts.