Deck 98: Wheel Bearings and Service

Question 1

Which type of automotive bearing can withstand radial and thrust loads, yet must be adjusted for proper clearance?

A)Tapered roller bearing
B)Needle roller bearing
C)Roller bearing
D)Ball bearings

Answer 1

Tapered roller bearing

Question 2

Most sealed bearings used on the front wheels of front-wheel-drive vehicles are usually which type?

A)Needle roller bearing
B)Single tapered roller bearing
C)Double row ball bearing
D)Roller bearing

Answer 2

Double row ball bearing

Question 3

On a bearing that has been shock loaded, the race (cup) of the bearing can be dented. This type of bearing failure is called ________.

A)Spalling
B)Brinelling
C)Fluting
D)Arcing

Answer 3

Brinelling

Question 4

The bearing grease most often specified is rated NLGI ________.

A)0
B)00
C)1
D)2

Question 5

A non-drive-wheel bearing adjustment procedure includes a final spindle nut tightening torque of ________.

A)12 to 30 lb. -ft.
B)Finger tight
C)5 lb.-in.
D)12 to 15 lb. -ft. plus 1/16 in. turn

Question 6

After a non-drive-wheel bearing has been properly adjusted, the wheel should have how much end play?

A)1/16 to 3/32 in.
B)0.001 to 0.005 in.
C)0.10 to 0.30 in.
D)Zero

Question 7

The differential cover must be removed before removing the rear axle on which type of axle?

A)C-lock
B)Press fit
C)Welded tube
D)Retainer plate

Question 8

What part should be replaced when servicing a wheel bearing on a non-drive wheel?

A)Both the grease seal and the cotter key
B)The cotter key
C)The bearing cup
D)The grease seal

Question 9

Technician A says that a defective wheel or axle bearing often makes a growling or rumbling noise. Technician B says that a defective wheel or axle bearing often makes a noise similar to a tire with an aggressive mud or snow design. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 10

Two technicians are discussing differentials. Technician A says that all differentials are vented. Technician B says that a clogged vent can cause the rear axle seal to leak. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 11

Two technicians are discussing wheel bearings. Technician A says that conventional tapered roller bearings as used on the front of most rear-wheel-drive vehicles should be slightly loose when adjusted properly. Technician B says that the spindle nut should not be tightened more than finger tight as the final step. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 12

Wheel bearings are being packed with grease. Technician A says to use grease that is labeled "GC." Technician B says to use grease with an NLGI number of 2. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 13

Bearings usually give warning before they fail.

Question 14

Bearings cannot be diagnosed by turning the wheel and tire assembly by hand.

Question 15

A new bearing can be installed in an old bearing race if the old race is OK.

Question 16

When wheel bearings are adjusted with a dial indicator, allow .005" to .010" (.127 to .25 mm) of end play.

Question 17

Technician A says that excessive axial end play is a sign that wheel bearings need service. Technician B says that an out-of-balance wheel is a sign that wheel bearings need service. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 18

When road testing a vehicle with adjustable dual wheel bearings, a swerve to the right causes noise. Technician A says that the right inner wheel bearing may be bad. Technician B says that those conditions indicate that the left inner bearing may be bad. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 19

When a new bearing is installed ________.

A)Before touching the bearing, wash your hands and dip your fingers in clean motor oil
B)Install a new grease seal
C)Both A and B
D)Neither A nor B

Question 20

Which is NOT a bearing problem?

A)Frettage
B)Spalling
C)Smearing
D)Stripping

Question 21

Technician A says a poor engine ground connection can cause electricity to flow through wheel bearings, causing damage. Technician B says using too much bearing grease may result in premature bearing failure. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 22

Oil contamination of drum brake linings bolted to a solid rear axle may be caused by a ________.

A)Plugged axle vent
B)Leaking grease seal
C)Both A and B
D)Neither A nor B

Question 23

What type of bearing is shown below?

A)Barrel bearing
B)Flat section bearing
C)Ball bearing
D)Roller bearing

Question 24

What type of bearing is shown below?

A)Roller bearing
B)Tapered roller bearing
C)Axial bearing
D)Wedge bearing

Question 25

What feature of an axle seal is the arrow point to?

A)Garter spring
B)A return spring
C)Axle spring
D)Sealing lip

Question 26

What is the function of the part the technician is holding (arrow)?

A)It is used only for factory assembly and can be discarded.
B)This component retains the axle in the side gear.
C)This clip retains the side gears.
D)None of these