Ben
As nobody appears to have replied to your query I will suggest
something.
I would expect you to find full battery voltage under the conditions you
mention.
However the way that your generator current is controlled, is by placing
a resistor located in the back of your control box in series with the
field windings when predetermined voltages and charge rates have been
reached.
My guess is that this resistor is 'in circuit' which means that the
contacts across it are not made. These contacts are controlled by the
left hand coil as you look into the control box. Try looking at these
contacts. They might be burnt out.
A substitue control box might be a good check.
All the best
>I would appreciate it if someone can tell me what the voltage should be at the
>field terminal on the generator. I measure 5.8 volts on my BN1, but it may be
>screwed up since I am having charging problems.
>
>The measurement is taken with the ignition key on and the engine not
>running.
>
>The generator is a Lucas C45PV5, 22456B.
>
>Oh yes, I have already run the tests specified in the manual.
>
>Thanks,
>Ben
>
>
--
John Harper
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