Chapter 36—Clutches
f f
TRUE/FALSE f
1. Clutch slippage occurs when the clutch disc is not gripped firmly between the flywheel and the
f f f f f f f f f f f f f f f f f
pressure plate. f f
ANS: T f PTS: 1 f
2. Chatter is a shuddering felt in the vehicle when the pressure plate releases the clutch disc.
f f f f f f f f f f f f f f f f
ANS: F f PTS: 1 f
3. Chatter is caused by liquid contaminants on the friction surfaces.
f f f f f f f f f f
ANS: T f PTS: 1 f
4. Clutch drag occurs if the clutch disc is not completely released when the clutch pedal is fully
f f f f f f f f f f f f f f f f f
depressed. f
ANS: T f f PTS: 1 f f
5. Until recently, the material that was molded or woven into facings of the clutch disk was
f f f f f f f f f f f f f f f f f
predominantly asbestos. f f
ANS: T f f PTS: 1 f f
6. When compared to a diaphragm-type pressure plate, a coil spring pressure plate assembly has fewer
f f f f f f f f f f f f f f f f
moving parts. f f
ANS: F f f PTS: 1 f f
7. There is approximately 10 psi residual pressure in the hydraulic clutch lines when the clutch is in the
f f f f f f f f f f f f f f f f f f f
engaged position. f f
ANS: F f PTS: 1 f
8. Shaft and lever clutch linkage are used on most modern passenger cars.
f f f f f f f f f f f f
ANS: F f PTS: 1 f
9. The fluid level in the hydraulic clutch reservoir should be approximately one-fourth inch from the top.
f f f f f f f f f f f f f f f f
ANS: T f PTS: 1 f
10. Most hydraulic clutch release systems should be adjusted once a year.
f f f f f f f f f f f
ANS: F f PTS: 1 f
11. Some transaxles have a short, self-centering input shaft that does not require a pilot bushing or bearing.
f f f f f f f f f f f f f f f f f
, ANS: T f PTS: 1 f
12. Particles of cotton, brass, rope, and wire are added to prolong the life of the clutch disc and provide
f f f f f f f f f f f f f f f f f f f
torsional strength. f f
ANS: T f PTS: 1 f
13. Coil spring-type pressure plates require less pedal effort than diaphragm-type pressure plates.
f f f f f f f f f f f f
ANS: F f PTS: 1 f
14. When the clutch is fully engaged, the release bearing is normally stationary.
f f f f f f f f f f f f
ANS: T f PTS: 1 f
15. The flywheel should not be resurfaced unless there are hot spots on its surface or the rivets on the
f f f f f f f f f f f f f f f f f f f
clutch disk have made contact with the flywheel surface.
f f f f f f f f f
ANS: F f PTS: 1 f
MULTIPLE CHOICE f f
1. The clutch friction disc always rotates with the ______.
f f f f f f f f f
a. a. engine crankshaft
f f f f c. c. pressure plate
f f f f
b. flywheel
f f d. d. transmission input shaft
f f f f f
ANS: D f f
transmission input shaft f f f
PTS: 1 f
2. Torsional coil springs in the clutch disc ______. f f f f f f f f
a.f a. absorb the torque forces
f f f f f
b.f b. are the mechanical force holding the pressure plate against the driven disc and flywheel
f f f f f f f f f f f f f f f
c.f c. are located between the friction facings
f f f f f f f
d.f d. all answers are correct
f f f f f
ANS: A f f
absorb the torque forces f f f f
PTS: 1 f
3. Which of the following is probably NOT the cause of a vibrating clutch?
f f f f f f f f f f f f f
a. a. excessive crankshaft endplay
f f c. c. excessive flywheel runout f f f f f f f f
b. b. out-of balance pressure plate assembly
f f d. d. loose flywheel bolts f f f f f f f f f f
, ANS: A f f
excessive crankshaft endplay f f f
PTS: 1 f
4. When the clutch pedal is released on a hydraulic clutch linkage, the ______.
f f f f f f f f f f f f f
a.f a. master cylinder piston is released by the piston return spring
f f f f f f f f f f f
b.f b. master cylinder piston is released by hydraulic pressure
f f f f f f f f f
c.f c. slave cylinder is released by hydraulic pressure
f f f f f f f f
d.f d. slave cylinder piston does not move
f f f f f f f
ANS: A f f
master cylinder piston is released by the piston return spring
f f f f f f f f f f
PTS: 1 f
5. When the clutch is disengaged, the power flow stops at the ______.
f f f f f f f f f f f f
a. a. transmission input shaft
f f f f f c. c. pressure plate and flywheel
f f f f f f
b. b. driven disc hub
f f f f f d. d. torsion springs
f f f f
ANS: C f f
pressure plate and flywheel f f f f
PTS: 1 f
6. Insufficient clutch pedal clearance results in ______.
f f f f f f f
a.f a. gear clashing when shifting the transmission
f f f f f f f
b.f b. a noisy front transmission bearing
f f f f f f
c.f c. premature release bearing failure
f f f f f
d.f d. premature pilot bearing failure
f f f f f
ANS: C f f
premature release bearing failure f f f f
PTS: 1 f
7. When making a clutch adjustment, it is necessary to ______.
f f f f f f f f f f
a. a. measure clutch pedal free travel
f f f f f f f c. c. check hydraulic fluid level
f f f f f f
b. b. lubricate the clutch linkage
f f f f f f d. d. place the transmission in reverse
f f f f f f f
ANS: A f f
measure clutch pedal free travel
f f f f f
PTS: 1 f
, 8. The surface of the pressure plate contacts the ______.
f f f f f f f f f
a. a. transmission main shaft
f f f f f c. c. clutch disc
f f f f
b. b. throwout bearing
f f f f d. flywheel
f f
ANS: C f f
clutch disc f f
PTS: 1 f
9. Which of the following is NOT a spring type used in pressure plate assemblies?
f f f f f f f f f f f f f f
a. a. Belleville
f f f c. c. diaphragm
f f f
b. coil
f f d. torsional
f f
ANS: D f f
torsional f
PTS: 1 f
10. The clutch release bearing exerts pressure upon the ______.
f f f f f f f f f
a. a. clutch disc
f f f f c. c. pilot bearing
f f f f
b. b. diaphragm spring
f f f f d. d. torsional springs
f f f f
ANS: B f f
diaphragm spring f f
PTS: 1 f
11. Technician A says the pressure plate assembly squeezes the clutch disc onto the flywheel. Technician B
f f f f f f f f f f f f f f f f
says the pressure plate moves away from the clutch disc so that the disc can stop rotating. Who is
f f f f f f f f f f f f f f f f f f f
correct? f
a. A only
f f c. c. both A and B f f f f f f f
b. B only
f f d. d. neither A nor B
f f f f f f f
ANS: C f f
both A and B f f f f
PTS: 1 f
12. Technician A says an oil-soaked clutch disc cannotcause clutch chatter. Technician B
f f f f f f f f f f f
says clutch chatter cannot be caused by loose bell housing bolts. Who is correct?
f f f f f f f f f f f f f f f
a. A only
f f f c. c. both A and B
f f f f f f
b. B only
f f f d. d. neither A nor B
f f f f f f
ANS: D f f
f f
TRUE/FALSE f
1. Clutch slippage occurs when the clutch disc is not gripped firmly between the flywheel and the
f f f f f f f f f f f f f f f f f
pressure plate. f f
ANS: T f PTS: 1 f
2. Chatter is a shuddering felt in the vehicle when the pressure plate releases the clutch disc.
f f f f f f f f f f f f f f f f
ANS: F f PTS: 1 f
3. Chatter is caused by liquid contaminants on the friction surfaces.
f f f f f f f f f f
ANS: T f PTS: 1 f
4. Clutch drag occurs if the clutch disc is not completely released when the clutch pedal is fully
f f f f f f f f f f f f f f f f f
depressed. f
ANS: T f f PTS: 1 f f
5. Until recently, the material that was molded or woven into facings of the clutch disk was
f f f f f f f f f f f f f f f f f
predominantly asbestos. f f
ANS: T f f PTS: 1 f f
6. When compared to a diaphragm-type pressure plate, a coil spring pressure plate assembly has fewer
f f f f f f f f f f f f f f f f
moving parts. f f
ANS: F f f PTS: 1 f f
7. There is approximately 10 psi residual pressure in the hydraulic clutch lines when the clutch is in the
f f f f f f f f f f f f f f f f f f f
engaged position. f f
ANS: F f PTS: 1 f
8. Shaft and lever clutch linkage are used on most modern passenger cars.
f f f f f f f f f f f f
ANS: F f PTS: 1 f
9. The fluid level in the hydraulic clutch reservoir should be approximately one-fourth inch from the top.
f f f f f f f f f f f f f f f f
ANS: T f PTS: 1 f
10. Most hydraulic clutch release systems should be adjusted once a year.
f f f f f f f f f f f
ANS: F f PTS: 1 f
11. Some transaxles have a short, self-centering input shaft that does not require a pilot bushing or bearing.
f f f f f f f f f f f f f f f f f
, ANS: T f PTS: 1 f
12. Particles of cotton, brass, rope, and wire are added to prolong the life of the clutch disc and provide
f f f f f f f f f f f f f f f f f f f
torsional strength. f f
ANS: T f PTS: 1 f
13. Coil spring-type pressure plates require less pedal effort than diaphragm-type pressure plates.
f f f f f f f f f f f f
ANS: F f PTS: 1 f
14. When the clutch is fully engaged, the release bearing is normally stationary.
f f f f f f f f f f f f
ANS: T f PTS: 1 f
15. The flywheel should not be resurfaced unless there are hot spots on its surface or the rivets on the
f f f f f f f f f f f f f f f f f f f
clutch disk have made contact with the flywheel surface.
f f f f f f f f f
ANS: F f PTS: 1 f
MULTIPLE CHOICE f f
1. The clutch friction disc always rotates with the ______.
f f f f f f f f f
a. a. engine crankshaft
f f f f c. c. pressure plate
f f f f
b. flywheel
f f d. d. transmission input shaft
f f f f f
ANS: D f f
transmission input shaft f f f
PTS: 1 f
2. Torsional coil springs in the clutch disc ______. f f f f f f f f
a.f a. absorb the torque forces
f f f f f
b.f b. are the mechanical force holding the pressure plate against the driven disc and flywheel
f f f f f f f f f f f f f f f
c.f c. are located between the friction facings
f f f f f f f
d.f d. all answers are correct
f f f f f
ANS: A f f
absorb the torque forces f f f f
PTS: 1 f
3. Which of the following is probably NOT the cause of a vibrating clutch?
f f f f f f f f f f f f f
a. a. excessive crankshaft endplay
f f c. c. excessive flywheel runout f f f f f f f f
b. b. out-of balance pressure plate assembly
f f d. d. loose flywheel bolts f f f f f f f f f f
, ANS: A f f
excessive crankshaft endplay f f f
PTS: 1 f
4. When the clutch pedal is released on a hydraulic clutch linkage, the ______.
f f f f f f f f f f f f f
a.f a. master cylinder piston is released by the piston return spring
f f f f f f f f f f f
b.f b. master cylinder piston is released by hydraulic pressure
f f f f f f f f f
c.f c. slave cylinder is released by hydraulic pressure
f f f f f f f f
d.f d. slave cylinder piston does not move
f f f f f f f
ANS: A f f
master cylinder piston is released by the piston return spring
f f f f f f f f f f
PTS: 1 f
5. When the clutch is disengaged, the power flow stops at the ______.
f f f f f f f f f f f f
a. a. transmission input shaft
f f f f f c. c. pressure plate and flywheel
f f f f f f
b. b. driven disc hub
f f f f f d. d. torsion springs
f f f f
ANS: C f f
pressure plate and flywheel f f f f
PTS: 1 f
6. Insufficient clutch pedal clearance results in ______.
f f f f f f f
a.f a. gear clashing when shifting the transmission
f f f f f f f
b.f b. a noisy front transmission bearing
f f f f f f
c.f c. premature release bearing failure
f f f f f
d.f d. premature pilot bearing failure
f f f f f
ANS: C f f
premature release bearing failure f f f f
PTS: 1 f
7. When making a clutch adjustment, it is necessary to ______.
f f f f f f f f f f
a. a. measure clutch pedal free travel
f f f f f f f c. c. check hydraulic fluid level
f f f f f f
b. b. lubricate the clutch linkage
f f f f f f d. d. place the transmission in reverse
f f f f f f f
ANS: A f f
measure clutch pedal free travel
f f f f f
PTS: 1 f
, 8. The surface of the pressure plate contacts the ______.
f f f f f f f f f
a. a. transmission main shaft
f f f f f c. c. clutch disc
f f f f
b. b. throwout bearing
f f f f d. flywheel
f f
ANS: C f f
clutch disc f f
PTS: 1 f
9. Which of the following is NOT a spring type used in pressure plate assemblies?
f f f f f f f f f f f f f f
a. a. Belleville
f f f c. c. diaphragm
f f f
b. coil
f f d. torsional
f f
ANS: D f f
torsional f
PTS: 1 f
10. The clutch release bearing exerts pressure upon the ______.
f f f f f f f f f
a. a. clutch disc
f f f f c. c. pilot bearing
f f f f
b. b. diaphragm spring
f f f f d. d. torsional springs
f f f f
ANS: B f f
diaphragm spring f f
PTS: 1 f
11. Technician A says the pressure plate assembly squeezes the clutch disc onto the flywheel. Technician B
f f f f f f f f f f f f f f f f
says the pressure plate moves away from the clutch disc so that the disc can stop rotating. Who is
f f f f f f f f f f f f f f f f f f f
correct? f
a. A only
f f c. c. both A and B f f f f f f f
b. B only
f f d. d. neither A nor B
f f f f f f f
ANS: C f f
both A and B f f f f
PTS: 1 f
12. Technician A says an oil-soaked clutch disc cannotcause clutch chatter. Technician B
f f f f f f f f f f f
says clutch chatter cannot be caused by loose bell housing bolts. Who is correct?
f f f f f f f f f f f f f f f
a. A only
f f f c. c. both A and B
f f f f f f
b. B only
f f f d. d. neither A nor B
f f f f f f
ANS: D f f
