Ducati Diavel Workshop Manual page 625

Cooling system: coolant expansion tank
Remove the saddles
Remove air conveyor covers
Remove the tank half covers
Remove the fuel tank
Remove air conveyors
Disconnect the throttle cable
Remove the airbox, the throttle
body, the blow by and the oil
breather tube
Empty the coolant out of the
cooling system
Loosen the clips (21) that secure the radiator/thermostat sleeve (40) and the radiator/plug sleeve (24) to the water
radiators.
Loosen clips (25) and (43) that secure the breather pipe (26) to the radiator/plug sleeve (24) and to the left radiator.
Loosen the clips (34) securing the thermostat assembly (38) - thermostat-cylinder head sleeve (35) - thermostat/cylinder
head sleeve (37) to the cylinder heads.
Loosen the clip (28) to release the breather pipe (30) from the vertical head.
Loosen the clips (21) and (34) to disassemble the thermostat unit (38) - thermostat/head sleeve (35) - thermostat/head
sleeve (37) - radiator/thermostat sleeve (40).
5 - 3, Removal of the seat
8 - 7, Removal of the air filters
5 - 2, Removal of the fuel tank
fairings
8 - 2, Removal of the fuel tank
8 - 7, Removal of the air filters
7 - 8.1, Removal of the throttle
twistgrip
8 - 6, Removal the airbox and
throttle body
4 - 3, Changing the coolant