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Tractor Talk Discussion Forum

6V tractor charged itself

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Farmer in the D

08-15-2005 08:21:13




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This happened to me for the first time. I have a 6v tractor that has given me some charging problems over the years. I find it needs periodic charging even during the summer months, say once a month. When the battery goes down I jump it and use for that day, then charge it that night. No problems. I don't want to convert it to 12 volts. It spins over and starts fine at 6v. I have tried numerous types (brands) of batteries and have the same problem. It puts out 8v at the battery when running. Yesterday, I tried to start and no power. I walked away from it planning to jump it but got sidetracked. I came back 5-6 hours later and found I left the switch on. Not only did it start, it spun like it was a fully charged battery. So, would leaving the system energized pull more energy out of the battery that would normally not be available? What happened here?

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frankiee

08-15-2005 17:44:44




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
6 volts has the same power that 12 volts, just more amps. More amps means that there must be minimal resistance for it to work as desired.
In starter motors, the commutor bars are a area of resistance. A new starter motor can work very well and degrade over time without actually giving up.
I would rebuild the starter. Or just take it apart and do the tests, undercut the mica, and clean the commutor bars. Make sure all cable connections are good and with no smaller wires added. My dad has a Farmall H' and I have to do the starer about every 5 years.
We dont have any real problems with it if we put a new battery in every 5 to 10 years.
It has been a runner every 2nd day for lets see....bout near 25 years now.
Only thought of going to 12 volt once and then got new battery and cleaned up the starter inside and forgot about it.

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Joe in Minnie

08-15-2005 14:44:05




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
Now "old" your finger is sure getting active on the keys....You must be fully charged !



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Joe (Wa)

08-15-2005 13:26:15




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
Leaving the ignition on will heat the coil. Try leaving it on and touch the coil after 20-30 minutes (carefull may be very hot)you'll get the idea. 5-6 hrs should have boiled the oil in the coil, possibly moved some debris or burned off "whisker" shorts, wonder it didn't burn it out.

I would be considering changing the coil if it does it again. A partially shorted or grounded coil can result in a significant voltage drop to the starter.

Joe

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RustyFarmall

08-15-2005 09:34:04




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
Most likely the battery WAS low. Leaving the switch turned on created a load on the battery, causing it to heat up a little bit. A warm battery always has more power than a cold battery. Old timers used to actually short out a battery with jumper cables in cold weather so the engine would start. I do not advise trying that.



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Little Ed

08-15-2005 20:09:49




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 Re: 6V tractor charged itself in reply to RustyFarmall, 08-15-2005 09:34:04  
one of the first mechanics that I had the pleasure of working with would always turn on his headlights for 30 seconds in cold weather. He claimed that it would start the flow of electrons in the battery, thereby causing it to warm itself up somewhat, and produce more current for cranking. I"ve never tried it myself, but I have never found anything that he taught me to be untrue. $.02



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Farmer in the Dells (WI)

08-15-2005 19:01:05




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 Re: 6V tractor charged itself in reply to RustyFarmall, 08-15-2005 09:34:04  
That might explain why you can turn on the headlights on a car with a weak battery for a few minutes and get enough out of it to turn an engine over.



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old

08-15-2005 09:06:37




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
Almost sound like a wireing problem.If a battery is new/very good it will almost recharge its self from sitting. So it sounds like its not turning off right or something. Just a guess hard to explain with out seeing what you have etc.



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old

08-15-2005 09:06:07




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
Almost sound like a wireing problem.If a battery is new/very good it will almost recharge its self from sitting. So it sounds like its not turning off right or something. Just a guess hard to explain with out seeing what you have etc.



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old

08-15-2005 09:06:07




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
Almost sound like a wireing problem.If a battery is new/very good it will almost recharge its self from sitting. So it sounds like its not turning off right or something. Just a guess hard to explain with out seeing what you have etc.



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old

08-15-2005 09:06:06




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 Re: 6V tractor charged itself in reply to Farmer in the Dells (WI) , 08-15-2005 08:21:13  
Almost sound like a wireing problem.If a battery is new/very good it will almost recharge its self from sitting. So it sounds like its not turning off right or something. Just a guess hard to explain with out seeing what you have etc.



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