MG Magnette KA Instruction Manual page 70

FLYWHEEL
l l l u s t r a t i o n 54.-Inner view of the clutch and its components. The clutch cover-plate is bolted
to the flywheel and the centre plate 2 registers over the guide pins in the flywheel.
The pressure
plate 3 is forced rearwards by the action of the springs, when it grips the floating plates
4 and 5 between
the friction surfaces on the plates 1, 2 and 3. W h e n the clutch is pushed out, three push pins pass
through holes, one of which is marked
"
A " in the plate I , and forces pressure plate 3 towards the
flywheel, thereby compressing the clutch springs.
C l u t c h W i t h d r a w a l . In order t o effect the disengagement o f the clutch
it
is necessary t o force the pressure plate o u t o f engagement w i t h the floating
plate by compressing the clutch springs. It w i l l be seen on reference t o lllustration
No. 54 that on the inner side o f the clutch cover-plate there are three holes, one
o f which is marked A, in which short plungers register, which, when the clutch
is assembled, come into contact w i t h the three hardened steel abutments marked
A I in lllustration No. 54. These plungers are controlled by the adjusting screw
carried in the withdrawal arms, which can be clearly seen in lllustration No. 55.
Pressure on the clutch pedal forces the withdrawal arms forward, and i n t u r n these
force the adjusting screws against the plungers, which in t u r n force the clutch
pressure plate towards the flywheel, thus compressing the clutch springs.
The action o f the clutch thus having been described,
it
simply remains t o show
how adjustment is effected, and the reason for the three small springs marked I shown
i n lllustration No. 55. The springs are only intended t o anchor the withdrawal
plate t o the withdrawal arms. It is also necessary t o l i m i t the travel o f the clutch
pedal so as t o avoid the clutch being pushed o u t t o o far. As the clutch gradually
wears, the thickness o f the Ferodo rings w i l l decrease, which w i l l cause the floating
plates t o come nearer t o the clutch cover-plate. This necessitates the clutch with-
drawal set screws being adjusted t o give a clearance between the fabric face and
withdrawal disc. The correct clearance is in. when the clutch pedal is o u t o f
engagement.
In lllustration No. 55 a spanner and screwdriver are shown on the adjusting
set screws, access being obtained through the aperture in the upper housing marked
for
"
clutch oiling and inspection."