Diaphragm Spring; Outch Disc - Mitsubishi MT160 Repair Manual

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The periphery of the diaphragm is held to the
pressure plate by distributed clips: the diaphragm
periphery pulls the pressure plate through these
clips when the release bearing pushes the tips of
"fingers," ~ften referred to as tapering fingers
because of their appearance.
A totpl of six bolts are used to secure the
clutch cover to the flywheel. Of these bolts, two
are reamer bolts.
Diaphragm spring
This spring is made by press-working a spring-
steel plate and by heat-treating to provide a
spring characteristic needed for its duty in the
clutch. The obtained characteristic is illustrated
in terms of plate pressure as a function of plate
position. Note that the pressure available in
initial condition is slightly below the maximum,
which occurs when the plate displaces itself
toward flywheel due to the initial wear of
facings.
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Displacement of pressure plate
Diaphragm spring
CLUTCH SYSTEM
Outch disc
The disc is splined to the transmission main
shaft; it is normally pressed against flywheel by
pressure plate (in the engaged condition of the
clutch). It is constructed light in weight but
sized large enough for the powerful torque the
clutch has to conduct from the diesel engine.
Lightweight or small inertia is what is needed for
smooth gear change in the transmission.
Its facings are riveted to the cushioning plate,
which is attached through six torsion springs and
retaining plate to the clutch plate integral with
the splined hub. For avoiding slippage in convey-
ing torque, a special woven material containing
wire is used for the facings. The torsion springs,
through which drive flows from cushioning plate
to clutch plate dampen torsional shocks and
pulsations during a standing start and during
operation on rough ground.
Radial grooves are provided in the face of the
facing as a means of preventing abnormal tem-
perature rise in the facing, thereby increasing its
durability
Clutch plate
Facing
Facing rivet
Cushioning plate
Torsion spring
Splined hub
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Friction plate
Stop pin
Retaining plate
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