CLUTCH SYSTEM
The clutch
is
a means
of
providing a
path
of
drive from engine flywheel
to
the
input
shaft
(main shaft)
of
the transmission. In
the
clutch,
its pressure plate
is
held
through
diaphragm
spring by
the
clutch cover
bolted
to
the fly-
wheel, and the clutch disc, whose
hub
is
splined
to
the main shaft, has its friction surfaces
sandwiched between pressure plate and flywheel.
All
of
the above named parts revolve
together
with the flywheel, and drive the main shaft
when the clutch
is
in engaged state, with the
pressure plate being pressed by the diaphragm
spring against flywheel. Under this condition,
the
path
of
drive flow
is
from flywheel to facings
and to the main shaft
through
cushioning plate,
clutch
plate, stop pins, retaining plate, torsion
springs and splined hub. Torsion springs are
between clutch plate and retaining plate on the
one side and the splined
hub
on
the other, and
serve
as
resilient members for conveying the
torsional drive.
3-4
Depressing the clutch pedal
to
release
the
clutch, this pedal movement causes
the
release
collar
to
displace itself toward flywheel, thereby
pushing
the
release bearing against tapering
fingers
of
the diaphragm spring. Now acting
like a lever, the diaphragm spring deflects and,
by its periphery, pulls the pressure plate away
from flywheel side because this pheriphery
is
held
to
the plate by clips. With the pressure
plate so pulled, the facings separate from the
friction surface
of
flywheel, thereby
interrupting
the flow
of
drive.
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