48
on the octane selector scale. Each division of the scale
corresponds to a change of the ignition timing by 4°C in the
degrees of the crankshaft angle. If the detonation was not heard
at all, increase the ignition advance angle by turning the body
of the magnetic pickup and distributor unit clockwise.
Note
. To prevent the surface sparkover and burning through of the
magnetic pickup and distributor unit cap, see that the shoes of the high-
tension wires are completely seated in the cap terminal sockets. Never
switch on the ignition if moisture is detected on the cap. Keep the
plastic parts (cap, runner, low-tension terminal, sockets, etc.) clean.
Forbided
to keep the ignition on when the engine is not
operating, and to disconnect the storage battery when the engine
is operating.
TRANSMISSION
Maintenance of the Clutch
The automobile is equipped with a dry single-plate clutch
(Fig. 43) provided with the pressure plate 4 with the cover
plate 20, pressure springs 19 and release levers 11 in assy, driven
disk 3 with linings and torsional vibration damper in assy.
Some automobiles are equiped with a dry single-plate
clutch provided with the central pressure spring of the
diaphragm type. The clutch consists of the pressure plate with
the cover plate and of the pressure disk diaphragm spring which
tabs function as release levers; driven plate with linings and
torsional vibration dampers.
A grease cup for the clutch release bearing indentifies visually
the clutch type. The clutch with the pressure springs and release
levers is provided with the grease cup to be found on the right-
hand side of the engine (in motion). The clutch with the central
diaphragm pressure spring is not provided with a grease cup.
Maintenance of the clutch consists in cleaning of dirt,
tightening the bolt joints, adjusting and lubricating the clutch
release bearing.
The clutch release bearing with the central diaphragm spring
needs no grease.
Periodically drain condensate from the clutch housing
unscrewing the plug 22 (Fig. 43).
Maintenance of the clutch control linkage amounts to
