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CLUTCH SYSTEM
CONSTRUCTION
Release
bearing
Gu
tch release mechanism
The release levers
of
a conventional coil spring
clutch are
not
present in this release mechanism.
Instead, a diaphragm spring whose center portion
is
radially slit
to
present a
number
of
fingers
is
used.
As
far
as
the principles
of
clutch releasing
action are concerned, there
is
no difference
between this clutch release mechanism and the
conventional one.
In the engaged condition
of
the
clutch, there
is
a clearance between each "finger" tip and
the release bearing. This clearance corresponds
to the clearance between release levers and
release bearing in the conventional clutch, and
accounts for free play in the clutch pedal stroke.
3·2
Rod
I I
II
I I
Clutch pedal
Coupling
Main
shaft
Gutch
cover assembly
This assembly consists
of
clutch cover, dia-
phragm spring, pressure plate and pivot rings.
The cover has a plurality
of
rivet-like studs
distributed in a circular pattern. These studs
correspond
to
the adjusting bolts studded in
the
pressure plate
of
a conventional coil spring
clutch. Each stud protrudes through the dia-
phragm spring,
at
the
outer
end
of
its slit, and
two rings, called pivot rings, are fitted
to
the
protruding portion
of
the stud, one ring on each
side
of
the
diaphragm. The term
"pivot
rings" is
due
to
the fact
that,
in engaged state
of
the
clutch, the diaphragm bears against those rings
next
to the cover; in released state
of
the clutch,
the diaphragm bears against those rings
on
the
other
side.
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