Ducati Diavel Workshop Manual page 629

Cooling system: coolant expansion tank
Place the breather pipe (27) on the half-casing fitting and tighten the clip (28).
If removed, fit the coolant union (36) on the horizontal cylinder head and tighten it to a torque of 20 Nm (Min. 18 Nm -
Max. 22 Nm) (Sect. 3 - 3, Frame torque settings).
Assemble the thermostat (38) - thermostat/head sleeve (35) assembly by coupling and tightening them to a torque of 2.5
Nm ± 10% (Sect. 3 - 3, Frame torque settings) - and the thermostat/head sleeve (37) - radiator/thermostat sleeve (40)
by tightening the clamps (21) and (34).
Place breather pipe (30) on the vertical head and tighten the clip (28) to a torque of 2.5 Nm ± 10% (Sect. 3 - 3, Frame
torque settings).
Fit the clamp (34) on the union (33) matching to dots.
Position the thermostat unit (38) - thermostat/head sleeve (35) - thermostat/head sleeve (37) with the clips (34)
and tighten the clips (34) to a torque of 2.5 Nm ± 10% (Sec. 3 - 3, Frame torque settings).
Fix the breather pipe (26) to the radiator/plug sleeve (24) and to the left radiator by tightening the clips (25) and (43) to
a torque of 1 ± 10% (Sect. 3 - 3, Frame torque settings).