190303k

Question 1

Flywheel and clutch housing face runout checks are conducted to ensure components
will be parallel to one another during operation.

Answer 1

true

Question 2

Why is the engagement pull in force important?

Answer 2

to ensure proper clamping force on the friction disc(s).

Question 3

A typical overcentre clutch uses a special adapter ring to position and drive the clutch
disc(s).

Answer 3

true

Question 4

Friction discs in an overcentre clutch cannot be glazed by oil because they are made
of a very absorbent, porous material.

Answer 4

false

Question 5

Overcentre clutches use a type of linkage that requires a snap, overcentre movement
of the clutch handle during the engagement and disengagement process.

Answer 5

true

Question 6

A spring scale positioned at a specific distance up the clutch handle is used to
calculate the amount of pull required to cause an overcentre clutch to snap into
engagement

Answer 6

true

Question 7

List three (3) types of special application clutches.

Answer 7

a) sprag
b) spring and roller
c) dog
d) cone and bevel
e) electromagnetic
f) oil (wet)

Question 8

What is one (1) advantage of using an electromagnetic type clutch?

Answer 8

Mechanical linkage is eliminated and the clutch can be activated from a distance.

Question 9

An electromagnetic clutch is engaged by current flow in the electromagnet and held
in engagement by centrifugal force.

Answer 9

false

Question 10

An electromagnetic clutch is disengaged by applying reverse current flow in the
electromagnetic windings.

Answer 10

false

Question 11

Explain the advantage(s) of using an oil clutch.

Answer 11

Oil can cushion the clutch disc(s) and pressure plates(s) during engagement. The oil
can also cool and clean the clutch assembly during operation.

Question 12

All clutches serve what similar function?

Answer 12

they couple a drive and a driven unit together.

Question 13

When checking flywheel housing face runout, what should be done with the crankshaft?

Answer 13

the crankshaft is held fully forward or rearward to eliminate any inaccuracies caused by crankshaft end play

Question 14

What is an overrunning clutch?

Answer 14

a device that will drive in one direction and freewheel in the opposite direction

Question 15

The basic spring and roller overrunning clutch is considered what type of clutch?

Answer 15

A one-way clutch. It can only be engaged in one direction. It must freewheel in the opposite direction

Question 16

The drive ring (adapter plate) is bolted to the flywheel and is splined to to the clutch ________

Answer 16

Disc/disc’s

Question 17

What could a leaking rear engine seal cause in an over centre clutch?

Answer 17

Cause the friction discs to glaze and thus causing the clutch to slip

Question 18

Pressure plates both fixed and floating should be inspected for what?

Answer 18

Warpage, wear, cracks and signs of over heating

Question 19

Brass release bearings should be inspected for?

Answer 19

Wear and proper clearances

Question 20

What should be checked after installing an over centre clutch?

Answer 20

Crankshaft end play