Ducati Diavel Service Manual: Rectifier-regulator
The rectifier (1) is placed in the electrical components compartment.
The rectifier/regulator consists of an aluminium casing containing the diodes that rectify the current produced by the alternator. It also contains an electronic device that regulates the current supplied by the alternator in accordance with battery voltage.
If the battery is drained, the current has the value necessary to restore optimum operating conditions of the battery. In contrast, if the battery is fully charged, the current value will be lower.
Note
Control the charger current by using the dds diagnosis instrument (sect. 6 - 11, Diagnostic instruments).
Removal of the regulator 
Undo the two fixing screws (1) of the voltage regulator (2) and remove it together with them.
Important
Do not disconnect the battery cables when engine is running because this would cause irreparable damage to the regulator.
Refitting the regulator
Position the regulator (1) on the support.
Tighten the screws (1) to a torque of 10 nm +/- 10% (sect. 3 - 3, Frame torque settings).
Important
Do not disconnect the battery cables when engine is running because this would cause irreparable damage to the regulator.
Regulator fuse
The 30 a fuse is located inside the solenoid starter in the electrical components compartment.
Remove the fuse cap (a) to reach it.
A blown fuse can be identified by breakage of the inner filament (b).
Important
To avoid possible short circuits, replace the fuse in key off condition.
Warning
Never use a fuse with a rating other than the specified value. Failure to observe this rule may damage the electric system or even cause fire.
Alternator
It is equipped with a 12 v, 430 w generator, consisting of a fixed element
(stator, a) located on the generator cover and
of a movable element (rotor, b) fixed to the crankshaft.
Note
To chec ...
Electric starting system
Note
The references of the elements listed below are those of the "wiring
diagram", sect. 6 -1.
Electric starting system
The key components of the electric starting system are a solenoid (6) and ...
Other materials:
Low battery level
The activation of this (amber yellow) "warning" indicates that the status of
the battery vehicle is low.
It is activated when the battery voltage is ¼ 11.0 Volt.
Note
In this case, ducati recommends charging the battery as soon as possible
with the specific device, as it is possible th ...
Refitting the rear wheel eccentric hub and rear wheel shaft
Refitting is the reverse of removal, with attention to the following points.
If the calliper bracket locating pin (14) was removed, apply the recommended
threadlocker on reassembly.
Tighten the pin (14) to the torque of 33 nm +/- 5% (sect. 3 - 3, Frame torque
settings).
If previously ...
Refitting the abs control unit
If the brake hoses (7), (8), (9) and (10) on the abs control unit are changed
or removed, ensure that the fittings on the
control unit are positioned correctly.
Warning
If incorrectly positioned, the hose can affect brake operation and
foul moving parts. Position the hose as shown in the
fig ...