Week #3 - Wheels & Tires (Chapter 27)

Question 1

Which of the following methods should be used to completely deflate a truck tire?

a. The split rim should be separated
b. The Schrader valve pin should be depressed
c. The Schrader valve core should be removed
d. A hydraulic bead buster should be used

Answer 1

c. The Schrader valve core should be removed

Question 2

When using the TMC method of adjusting wheel bearings, endplay must be within what range?

Answer 2

0.001-0.005 inch

Question 3

What must be done to install a ConMet PreSet hub to an axle?

Answer 3

Torque to specifications

Question 4

Which of the following methods is used to lock the bearing setting on an axle or spindle?

a. castellated nuts with cotter pins
b. jam nuts
c. split forging nuts
d. all of the above

Answer 4

d. all of the above

Question 5

True or False: An advantage of disc wheels over cast spoke is that they produce fewer wheel alignment problems.

Answer 5

True

Question 6

Where is the brake drum mounted on a cast spoke wheel assembly?

Answer 6

On the inboard side of the wheel hub

Question 7

Seat radial tire beads using a metal ring inflation aid.

Answer 7

True

Question 8

True or False: Use a clip-on air chuck with a remote in-line valve and gauge to inflate tires on the vehicle.

Answer 8

True

Question 9

What should be done to match mutipiece rim components properly?

a. locate the part numbers and cross-check matching
b. use components from a single OEM
c. measure the component size
d. all of the above

Answer 9

d. all of the above

Question 10

Which of the following is the preferred method of repairing a wheel seal leak that has glazed the brake shoe linings?

a. Replace the wheel seal and damaged brake shoes
b. Replace the wheel seal and brake shoes on both sides of the axle
c. Replace the wheel seal only
d. Replace the wheel seal and bearings

Answer 10

b. Replace the wheel seal and brake shoes on both sides of the axle

Question 11

What type of hub requires heating in an oven to remove the bearing cups?

Answer 11

Aluminum

Question 12

What type of wheel seal fits tightly to both the hub and axle spindle and moves within itself?

Answer 12

Unitized

Question 13

What is the maximum allowable wheel runout permitted on cast spoke wheels?

Answer 13

1/8 inch (1.5 mm)

Question 14

True or False: In stud-piloted disc wheel systems, a loose inner nut can easily go undetected, eventually pounding out the ball seat.

Answer 14

True

Question 15

True or False: Seat radial tire beads by using a Cheetah rapid discharge air tank.

Answer 15

True

Question 16

Oil-lubricated drive axle wheel bearing receive oil from ____

Answer 16

The banjo housing

Question 17

True or False: Wheel axial runout on a cast spoke wheel can be eliminated only by removing the wheel rims and breaking down the tires.

Answer 17

False

Question 18

True or False: Any tire that tests 50 percent or less of its specified pressure should be removed from the truck and checked out in a safety cage.

Answer 18

True

Question 19

What type of tire tread is recommended for use on steering axles for on-highway trucks?

Answer 19

Rib

Question 20

If a set of dual tires were properly matched, which of the following would be true?
a. Both tires would have equal wear
b. Both tires would have the same nominal size
c. Both tires would have the same tread design
d, all of the above

Answer 20

d. all of the above

Question 21

Which of the following is said to be an advantage of low-profile radial tires?

a. greater vehicle stability
b. better traction
c. increased tread life
d. all of the above

Answer 21

d. all of the above

Question 22

What wheel type uses tires mounted to rims that mount to the wheel using lugs?

Answer 22

Cast spoke wheels

Question 23

Adjust cast spoke wheel radial runout by chalk-marking high points, then loosening the lug nuts on the chalk-marked side and tightening those 180 degrees opposite.

Answer 23

False

Question 24

What type of wheel assembly presents the least maintenance and alignment problems?

Answer 24

Hub-piloted wheels