Main Bearings - Ducati Diavel Workshop Manual

Crankcase assembly: crankcase halves
Check that the oilways are free of restrictions or clogging. Check the condition of locating bushes (22). If apparently
distorted or loose in their seats, change them using proper tools. When the locating bushes (22) are hard to remove from
casing, use a left-hand tap to force bushes out.
Important
The bushes (22) must always be renewed when they have been removed using the above procedure.
Remove the bearing (23), the circlip (5) and the roller bearing (4).

Main bearings

The main bearings have are of the angular contact type with offset inner races so that the balls transmit loads from one
groove to the other along straight lines at an angle to the axis of the bearing. The angle-contact ball bearings are
designed for bearing combined loading (radial-axial loads).
Bearings of this type can bear thrust loads in one direction only. In fact, under the action of a radial load inside the
bearing, an axial force is created that must be counterbalanced by an axial force acting in the opposite direction; that is