SAME SILVER 100.6 - Flywheel

Engine flywheel
Before dismounting the flywheel it is advisable to remove two
diametrically opposed screws replacing them with two stud bolts.
To replace the flywheel ring gear operate as follows:
— Immerse the flywheel into a water-filled container. Keep the
flywheel lifted a few centimeters from the container bottom
using some small iron blocks fitted under the ring gear teeth.
The ring gear should be turned upwards and project a few
millimeters from the water surface.
— Using a flame heat the ring gear all around the toothed sector
until the flywheel is dropped to the container bottom due to heat
expansion.
— Heat the new ring gear up to a temperature of about 200° C
and position into flywheel housing. Ensure the tooth chamfers
are turned upwards as shown in figure 43.
Fig. 42 - Machining depths for clutch matching surface of the flywheel.
Checks
Make certain that the sliding surface of the flywheel is not scored;
material can be removed, if necessary, to a maximum depth of 0,5
mm, (surface roughness 1,6 mm).
Thereafter, reinstate the radius (r = 2 mm) at diameter 341 mm
(see fig 42).
It is important that surface A should be lowered by the same
amount as surface B in order to maintain dimension 32,5 unaltered
and allow correct operation of the clutch assembly (see fig 42).
The flywheel contact surface should thoroughly be in the same
plane as the clutch plate. This can be verified by fitting a magnetic
base comparator as illustrated in figure 43 and rotating the fly-
wheel by hand.
Fig. 43 - Ring gear position on engine flywheel.
Fig. 44 - Checking flywheel face coplanarity.
Fig. 45 - Removing flywheel ring gear.
Fig. 46 - Engine flywheel.
engine
crankshaft
12
1
41
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