Ch 40 Heavy Duty Clutches

Engine _______ are caused by the acceleration of the engine crankshaft that occurs on each cylinder firing.

• A. Torsional vibrations

• B. Firing pulses

• C. Shaft speeds

• D. Revolutions per minute (RPM)

The relative resistance to motion between any two bodies in contact with one another is called _______.

• Clamp force

• Running Clearance

• Coefficient of friction

• Friction

Clutch_____ is the amount of torque a clutch can transmit before it starts to slip.

• Capacity

• Force

• Energy

• Torque

The Purpose of a ______ is to smooth out vibrations from the crankshaft assembly and provide one of the friction surfaces for a clutch disc used on manual transmissions/transaxle applications.

• Travel Damper

• Drive Pin

• Pilot Bearing

• Flywheel

Which of these is responsible for providing a channel to transfer torque from engine to the back of front clutch disc and front of the rear clutch disc?

• Splines

• Clutch cover

• Clutch fork

• Intermediate plate

Which of the following pull-type clutches uses coaxial springs working against levers that can reduce clutch pedal effort by 50%?

• Coil spring style

• Cone type

• Angle spring style

• Diaphragm spring type

The diaphragm spring clutch creates clamp load with the use of a ______ spring pushing on the pressure plate.

• Double diaphragm

• Straight coaxial

• Single diaphragm

• Single Coil

When discussing basic types of clutches used in the medium- and heavy-duty commercial vehicle industry, Tech A says the two basic types are pull-type and push-type. Tech B says a push-type clutch allows the use of a clutch brake to slow and stop the transmission gearing. Who is correct?

• Tech A

• Tech B

• Both Tech A and Tech B

• Neither Tech A nor Tech B

Which of the following carries considerable inertia as they rotate?

• Clutch brakes

• Flywheels

• Friction Discs

• Spring clutches

The release fork in a pull type clutch is what shape?

• U shape

• cone-shaped

• Straight

• "pot" shaped