'32 901 Sedan Generator Polarization

Posted by Marty or Marston On 2023/9/7 14:31:23

The generator (3 brush O-D GL1005) on the car doesn't charge. It appears the the previous owner had the unit rebuilt. I've checked the fuse and turned the 3rd brush screw clockwise & CCW with no change in output. So I'm thinking that I need to re-polarize it.

I've done this before on 6 & 12 volt 2 brush systems that have a voltage regulators. However, the car has with a 3 brush system that appears to have a regulator and relay (See photos circled in red). To accomplish this I think I need to touch a wire to the top of the relay (Right side of where green arrow points) to the negative terminal on the battery.

Attach file:

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  Regulator-Top.JPG (48.62 KB)


  Regulator-Bottom.JPG (47.61 KB)


  '32 Elec Schematic.jpg (380.27 KB)


  '32_GeneratorTag.jpg (117.80 KB)