by jim72ollie » Mon Apr 25, 2022 9:24 am
I believe the 4 brush generator would be considered "A" circuit, meaning the field coils feed from the output brush terminal, and the field end is the control wire.
Remove the GEN and FIELD wires at the regulator. MOMENTARLY jump the red generator wire to the battery to polarize the field coils.
Hook a volt meter between the GEN wire and ground. Start engine to a high RPM, touch the field wire to ground. this should bring the generator to "full" output (above 7 volts).
If it doesn't go up the generator is not working. If voltage rises, connect Gen wire at regulator and repeat grounding disconnected field wire to ground at high RPM. BAT and GEN terminal voltage should be equal if regulator batter contacts are closing. Field wire normally grounds through the regulator to control out put voltage, so confirm regulator base is actually grounded to B-