Week #4 - Standard Clutch Operation (Chapter 14)

Question 1

What is the function of a current clutch brake used in a heavy-duty drivetrain?

Answer 1

Minimize gear clash during a neutral to first gear shift

Question 2

Which of the following clutch components is splined to the input shaft of the transmission?

a. fly-wheel
b. clutch friction disc
c. release bearing
d. pressure plate

Answer 2

b. clutch friction disc

Question 3

When inspecting the mating faces of a clutch bell housing, which of the following can be regarded as the critical wear area?

a. between 2 o’clock and 10 o’clock counterclockwise
b. at the 3 o’clock position
c. between 3 o’clock and 8 o’clock clockwise
d. at the 12 o’clock position

Answer 3

c. between 3o’clock and 8 o’clock clockwise

Question 4

True or False: There are grooves worn in a clutch pressure plate, so the clutch pressure springs could be worn or damaged.

Answer 4

False

Question 5

True or False: When adjusting clutch linkage, free travel should be more than 1/2 inch measured at the release forks.

Answer 5

False

Question 6

When regarding the operation of a typical 15-1/2 inch clutch, what component constantly rotates at the engine rpm?

Answer 6

Intermediate plate

Question 7

True or False: When the driver releases (disengages) the clutch while coasting downhill, the clutch may overheat.

Answer 7

True

Question 8

How often should a clutch be inspected and lubricated?

a. every month
b. any time the chassis is lubricated
c. every 6,000 to 10,000 miles (9700 to 16,000 km)
d. all of the above

Answer 8

d. all of the above

Question 9

True or False: When servicing clutches, always wear an OSHA-approved particulate mask.

Answer 9

True

Question 10

True or False: Failure analysis determines that the facing of a clutch disc has burst, so the problem might be the driver coasting downhill with the transmission in gear and the clutch disengaged.

Answer 10

True

Question 11

Which of the following is not part of the clutch cover assembly?

a. adapter ring
b. pressure ring
c. pressure plate
d. release lever

Answer 11

a. adapter ring

Question 12

Which of the following could be a cause of poor clutch release>

a. worn release bearing
b. worn clutch linkage
c. damaged drive pins
d. all of the above

Answer 12

d. All of the above

Question 13

True or False: Overheating may result when the driver rides the clutch pedal.

Answer 13

True

Question 14

True or False: A driver complains of a hard clutch pedal, so the problem may be damaged bosses on the release yoke assembly.

Answer 14

True

Question 15

Which of the following clutch components is a driven member?

a. pressure plate
b. intermediate plate
c. clutch cover
d. clutch friction disc

Answer 15

d. clutch friction disc

Question 16

True or False: When adjusting clutch linkage, pedal free travel should be about 1-1/2 to 2 inches.

Answer 16

True

Question 17

What type of flywheel would the center intermediate plate be driven by drive pins?

Answer 17

Pot flywheel

Question 18

True or False: There are grooves worn in a clutch pressure plate, so the clutch discs could be worn or damaged.

Answer 18

True

Question 19

What should be used to remove minor heat discoloration from a clutch pressure plate?

Answer 19

Emery cloth

Question 20

Which of the following adjustments is made on nonsynchronized transmissions only?

a. free travel
b. clutch brake squeeze
c. total pedal travel
d. pedal height

Answer 20

b. clutch brake squeeze

Question 21

Which of the following driving procedures will result in clutch or driveline damage?

a. coating downhill with the transmission in gear and the clutch disengaged
b. driving with a foot on the clutch pedal
c. using the clutch as a brake to hold the truck on a hill and incline
d. all of the above

Answer 21

d. all of the above

Question 22

In the procedure required to perform a clutch replacement on a truck, which of the following steps should be performed first?

a. Remove the clutch brake.
b. Unbolt the clutch from the flywheel.
c. Unbolt the transmission bell housing from the flywheel.
d. Install a clutch alignment tool through the release bearing.

Answer 22

c. Unbolt the transmission bell housing from the flywheel.

Question 23

True or False: When installing a 14-inch clutch, you should install new drive pins in the flywheel.

Answer 23

True

Question 24

True or False: When installing a 14-inch clutch, you should file the drive pin slots to ensure that proper clearances are met.

Answer 24

False

Question 25

True or False: Failure analysis determines that the facing of a clutch disc has burst, so the cause is the driver using the clutch as a brake.

Answer 25

False

Question 26

True or False: When servicing clutches, use compressed air to clean off clutch components before removing a clutch pack.

Answer 26

False

Question 27

True or False: A driver complains of a hard clutch pedal, so the clutch linkage may be worn or damaged.

Answer 27

True