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Tractor Talk Discussion Forum

Delco Remy Generator on 1951 John Deere B

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Steve In New Yo

05-14-2006 13:34:17




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Have 1951 John Deere B. Previous owner dropped a 12 volt battery in it w/12 volt lamp bulbs. It really spins the old girl over, however the battery does not charge or even keep up when the lights are on. The generator is a Delco Remy #1101390 OD18. The guy has it set up on a negative ground. I don't know what the voltage regulator is, 6 or 12 volt, howerver I have to believe it is a 6 volt, therefor not able to "keep up" w/charging a 12 volt battery. Can anyone tell me what this generator is capable of producing and what saddle mount regulator should go with it ? I know the tractor was originally a 6 volt positive ground, but I'm o.k. with keeping the 12 volt battery in it.

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dan hill

05-19-2006 04:01:09




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 Re: Delco Remy Generator on 1951 John Deere B in reply to Steve In New York, 05-14-2006 13:34:17  
A 6 volt generator will go into high overcharge and explode the 12v battery if it is working.I expect the shunt coil on the cutout relay is open.I see little reason to mess old tractors up with 12v conversions.They require little charging current,most dont use lights.There are plenty of 6v batteries for sale for 30.00.6v starters and generators can still be repaired.There are still small shops that will do the work if you cant handle the repair work your self.Brush sets run 2.00 to 4.00 repair kits with all the small parts for a starter or generator are 10.00 to 15.00.A 6v battery has 3 cells to give trouble, 12v has 6 cells that can act up.A 90 cent hydrometer can spot battery problems before they happen.Good battery cables are a must for good starting.Avoid those clamp on repair ends.They give another place for acid corrosion to give trouble.Now if I were selling 12v conversions kits at 150 to 200 bucks I would say go ahead and convert.I wont tell you about busted starter drives and stripped fly wheel teeth that happen when the drive slams in at twice the normal speed.

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Glen in TX

05-14-2006 17:53:39




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 Re: Delco Remy Generator on 1951 John Deere B in reply to Steve In New York, 05-14-2006 13:34:17  
The Delco 1101390 generator was orignally a 6 volt putting out 11-17 amps, "A" circuit type. If you still have a 6V starter it can handle being on 12 but the generator will have to be repaired, converted or replaced if wanting to stay with 12V if it hasn't been converted already. For a 6V regulator it would have used a Delco 1118305 but if you convert or change generator to 12V would use something like a 1118792 regulator.

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souNdguy

05-14-2006 15:07:38




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 Re: Delco Remy Generator on 1951 John Deere B in reply to Steve In New York, 05-14-2006 13:34:17  
My 1950 JD-B was the exact same way.. a 12v battery hooke dup negative ground, and the old 6v genny and regulator left in place. I'm pretty sure that genny is a 7 amp job.. and was a-circuit.

I'd put a 6v battery in it.. repolarize it, and see if it doesn't work... mine did...

flip the reg over and check to see if there is a bias resistor from ground to the field tab.. if so.. it is a-circuit..

Soundguy

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