Ducati Diavel Workshop Manual page 826

Crankcase assembly: crankshaft/connecting rods assembly
Loosen all crankshaft plugs (4) and (7); heating the crankshaft, if necessary, to remove the threadlocker applied at the
time of assembly.
Clean all the oilways using suitable diameter metal brushes and then blow with compressed air to remove any residues
that have accumulated and are restricting the oil flow.
Apply prescribed threadlocker to the plugs thread (4) and (7) and then refit them.
Tighten all plugs to a torque of 13 Nm (Min. 11 Nm - Max. 15 Nm) (Sect. 3 - 3, Engine torque settings).
Big-end bearing shell-journal clearance
To check the assembly clearance between the bearing shells and crankshaft journals you will lay a strip (A) of GREEN
"Plastigage PG-1" on the journal. Fit the connecting rod with the original bearings and tighten the screws to a torque of
50 Nm.
Remove the connecting rod and compare the thickness of the Plastigage strip to the scale (B).
If the width measured corresponding to the existing clearance is not within the prescribed limit (Sect. 3 - 1.1,
Crankshaft), either the bearings or the crankshaft must be replaced.