Ducati Diavel Workshop Manual page 811

Crankcase assembly: crankcase halves
the crankcase half: apply grease to the bearing rollers. Fit the inner race (A) removed previously from the bearing. Apply
grease to the inner race.
The main bearing (1) with the corresponding bushing (2) (if present).
The bearing (4) with the retaining circlip (5) installed in correspondence with the timing belt driveshaft.
Insert the circlip (5) in the crankcase half installing it in its seat in the crankcase half on the bearing (4).
Note
Bearings do not have a specific mounting position (except main bearings); however it is good practice to install the
bearings so that side bearing the writing is facing upwards.
Fit the mesh filter as described in Sect. 4 - 3,
Important
To avoid damaging the filter, insert it by hand only. Do not use hammers or other metal tools.
Above the mesh filter seat there is a plug (19) which closes off the lubrication oilway. If it is to be renewed, apply the
prescribed threadlocker to its threads.
Tighten the plug to a torque of 24 Nm (Min. 21 Nm - Max. 27 Nm) (Sect. 3 - 3,
Changing the engine oil and filter cartridge.
Engine torque settings).