Alternator/Generator; Removing The Generator; Refitting The Generator - Ducati SCRAMBLER 800 Workshop Manual

Alternator / Generator
The generator used on the Scrambler has a rated power of 490 W at 14 V and consists of a fixed element
(stator/generator, A), located in the generator cover and a mobile element (rotor/flywheel, B) fastened to
the crankshaft.
Rotor (B) is manufactured with strong permanent magnets and features a lot of pin pairs for each stator
phase. This allows generating alternate voltage at a higher frequency compared to a standard generator.
The result: at low rpm it is possible to generate higher current.
Important
Check the charging current by using the "DDS" diagnosis instrument.
Attention
Before testing, disconnect the generator wiring from the electrical system when the ignition key is set to
OFF.
Rpm Active voltage
1500 rpm 20.8 V
2500 rpm 34.3 V
Values significantly lower than those indicated above can be due to:
- partially demagnetised rotor;
- short-circuited windings.
In the above cases the whole generator assembly (rotor and stator) should be replaced.
If checks have a favourable outcome, reconnect the generator to the regulator with ignition key on OFF.
Make sure that no cables are damaged or disconnected.

Removing the generator

For the removal procedure refer to chapter

Refitting the generator

For the refitting procedure refer to chapter
Minimum voltage
18.9 V
31.4 V
"Removing the flywheel/generator
"Refitting the flywheel/generator
Maximum voltage
24.5 V
40.4 V
assembly".
assembly".