Beta RR250 - Checking the Clutch Drum and Cap; Checking the Thrust Bearing Device

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ENGINE CHECKS AND ASSEMBLY
3.8.5 CHECKING THE CLUTCH
DRUM AND CAP
The clutch drum engages with the driven clutch
discs by means of the sliding pins A: make sure
that the area shown in the figure has no meshing
or abnormal wear. If so, replace the sliding pins.
3.8.6 CHECKING THE THRUST
BEARING DEVICE
Check the state of use of the thrust bearing and
the surfaces upon which it rests.
In order to check the thrust bearing, just ensure it
slides – when the device is assembled, simulate
rotation of the front centre bearing A with respect
to the rear one B.
Carefully check for any traces of meshing or wear
on the sliding surfaces. In the event of signs of
deterioration, replace the entire unit.
Guide pin
Bare clutch drum
Check that the disc friction area is free from
scratches, meshing or abnormal wear. If so, re-
place the clutch drum.
Also check that the radial holes on the clutch
drum are not obstructed and are free from sedi-
ments.
Thrust bearing device.