1962 Jim Dandy Not Charging

gtpicker01

gtpicker01

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I've been helping my dad work on a Jim Dandy Restoration and I wired it up for him, but it isn't charging. The starter generator was rebuilt with new brushes and field coils. Check the grounds and made sure they were ok. It starts nice, I just am not getting a charge. I used the wiring diagram that is attached below and I could have screwed something up. The weird thing is, when I start the tractor the amp meter never moves or does anything and its a new amp gauge. Thoughts anyone?

wiringdiagram.JPG
 
Hi GT picker, have you checked the voltage with a voltmeter when its running to see what the volts are? Did you install a new voltage regulator or is it the original? If its not putting out 14 volts and it wire like the diagram I'd replace the voltage regulator I have not done business with DB Electric but have heard good reviews Here's an easy test to try with the engine running about 1/2 throttle connect a jumper wire to the gemerator "F" terminal an touch the other end to the tractor see if the ammeter shows a charge
Voltage Regulator for Cub Cadet 125 126 127 128 129 147 149 Generator | eBay

Generator Regulator Two Unit A Circuit Pos Ground 8040-6163
 
Last edited:
MNGB said:
Hi GT picker, have you checked the voltage with a voltmeter when its running to see what the volts are? Did you install a new voltage regulator or is it the original? If its not putting out 14 volts and it wire like the diagram I'd replace the voltage regulator I have not done business with DB Electric but have heard good reviews Here's an easy test to try with the engine running about 1/2 throttle connect a jumper wire to the gemerator "F" terminal an touch the other end to the tractor see if the ammeter shows a charge
Voltage Regulator for Cub Cadet 125 126 127 128 129 147 149 Generator | eBay

Generator Regulator Two Unit A Circuit Pos Ground 8040-6163
Click to expand...


I did not get a new voltage regulator. It was the one thing I thought i could salvage. When the tractor was running, I only had 11.7 volts at the battery. I'll try your test and then see where I'm at. Thanks!
 
Most often when I have had a starter/generator ( or just a regular generator for that mater ) that doesn't charge, I have found that all it needed was to have the field coils polarized.

You do this with the engine not running and the switch off ...
Hook a jumper wire to the positive side of the battery and touch the other end against the " F " terminal on the generator a couple of times, just long enough for it to make a spark.

That will polarize the field coils.
 
I figured it out. The voltage regulator was bad. I put a new one on and I am getting 14 volts at the battery now when it is running. Thanks for all your help!!
 
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