1931 355A charging system

[Thomas B.]

I have had the generator rebuilt, new cut out switch, it is putting out 7.2 - 8.2 volts at the field and on the battery side of the cut out switch.  When I hook the wire coming from the vehicle to the battery side of the cut out switch, I can not get any more than 6.2 volts to the battery.  The battery is fully charged.  Any ideas???  Thomas B.

[m-mman]

If original, the charging rate is adjusted by moving the third brush inside the generator. It is a very crude design (adequate for the times)
Not sure I understand your connections. Are you testing with the battery connected? or with the generator running "free'?

If you search "3 brush generator adjustment" you will find a lot of information about dealing with them posted on many other boards for others makes. (back then everybody used 3 brush systems)

The best thing is to just install the hidden solid state electronic regulator.
http://forums.cadillaclasalleclub.org/index.php?topic=146832.0