Ducati Monster 796 Workshop Manual page 666

Crankcase assembly: crankcase halves
Check the condition of locating bushes (19). If apparently distorted or loose in their seats, change them using proper
tools.
When the locating bushes (19) are hard to remove from casing, use a left-hand tap to force bushes out.
Important
The bushes (19) must always be renewed when they have been removed using the above procedure.
Overhauling the 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