Ducati Diavel Workshop Manual page 689

Cylinder head assemblies: camshafts
Pre-tighten the screws (3) to a torque of 10 Nm (Min. 9 Nm - Max. 11 Nm) (Sect. 3 - 3,
Pre-tighten one support at a time, working in the sequence 1-2-3-4-5-6-7-8.
Then tighten the screws to a torque of 22.5 Nm (Min. 21 Nm - Max. 25 Nm) (Sect. 3 - 3,
Tighten one support at a time, working in the sequence 1-2-3-4-5-6-7-8.
Remove any excess sealant from between the cylinder head and the support.
Turn the camshafts by hand to check that they rotate freely.
Note
The screw (3) in position 1 must always be installed on the intake and timing side.
Important
Check lifted valve as explained (Sect. 9 - 4.1,
Sealing rings
Lubricate the sealing rings (17) with denatured alcohol.
Fit the installation tool code 88713.2861 on the camshaft and install the sealing ring on the cylinder head with the spring
side.
Important
Always fit new sealing rings on reassembly.
Use the drift provided with the tool and a mallet to seat the sealing rings.
Checking valve lift).
Engine torque settings).
Engine torque settings).