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John Deere Tractors Discussion Forum
:

John Deere 4010 wiring diagram?

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NoelC

08-29-2015 06:49:49




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Does anybody happen to know where I can find a wiring diagram for a 4010? Can't get it to turn over. Tested the starter, replaced the solenoid, replaced the ignition switch, Checked the batteries. Suspect it must be a wiring problem.




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Tx Jim

08-31-2015 09:16:21




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 Re: John Deere 4010 wiring diagram? in reply to NoelC, 08-29-2015 06:49:49  
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Failing internal link in a battery will cause a ""BOOM"" without the aid of a new battery attached to it.



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coonie minnie

08-29-2015 10:09:02




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 Re: John Deere 4010 wiring diagram? in reply to NoelC, 08-29-2015 06:49:49  
I would suggest you check the function of the neutral start switch.... and that the harness is atatched to it. Look behind the right hand battery.



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Mike Aylward

08-31-2015 09:28:11




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 Re: John Deere 4010 wiring diagram? in reply to coonie minnie, 08-29-2015 10:09:02  
On a 4010 the neutral safety start switch is just ahead of the shifter assembly under the right hand side of the dash cowling. Mike



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NoelC

08-29-2015 10:19:14




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 Re: John Deere 4010 wiring diagram? in reply to coonie minnie, 08-29-2015 10:09:02  
My father's tractor, I'm relaying messages to him. He doesn't think it has a neutral start switch, it used to turn over while in gear, had a 4020 with one. I'll tell him where to look.



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Tx Jim

08-29-2015 10:27:25




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 Re: John Deere 4010 wiring diagram? in reply to NoelC, 08-29-2015 10:19:14  
Check all 4 battery post connections for cleanliness & tightness.



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NoelC

08-29-2015 10:35:38




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 Re: John Deere 4010 wiring diagram? in reply to Tx Jim, 08-29-2015 10:27:25  
He has. Took the batteries out, charged one, replaced the other with a new one.



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buickanddeere

08-30-2015 17:46:57




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 Re: John Deere 4010 wiring diagram? in reply to NoelC, 08-29-2015 10:35:38  
Mis-matched batteries can be a factor causing battery explosions.



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Tx Jim

08-31-2015 03:39:17




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 Re: John Deere 4010 wiring diagram? in reply to buickanddeere, 08-30-2015 17:46:57  
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b&d

Please explain your "mis-matched" battery theory??
I've always heard in 24 volt system that new 12 volt batt installed with old 12 volt would draw new battery output down to equal old battery output but I never witnessed any explode except where "internal or external sparks" existed.



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buickanddeere

08-31-2015 07:10:21




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 Re: John Deere 4010 wiring diagram? in reply to Tx Jim, 08-31-2015 03:39:17  
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It's not a theory . The stronger battery can push the weakest cell on the weak battery into reversal. That causes boiling and gassing vast amounts of hydrogen and oxygen. Add ignition source such as a failing internal link in the battery and BOOM.



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coonie minnie

08-29-2015 10:11:08




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 Re: John Deere 4010 wiring diagram? in reply to coonie minnie, 08-29-2015 10:09:02  
And it looks like Jim beat me to the answer. It's behind the battery on a 4020... not sure on the 4010. I assumed the same.



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Tx Jim

08-29-2015 09:29:30




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 Re: John Deere 4010 wiring diagram? in reply to NoelC, 08-29-2015 06:49:49  
I'd suggest to check operation or lack of the neutral start switch(parts key 12) under cowling in frt of gearshift control lever

third party image



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buickanddeere

08-29-2015 08:26:27




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 Re: John Deere 4010 wiring diagram? in reply to NoelC, 08-29-2015 06:49:49  
Given that the tractor is approaching 55 years old. It's time to consider that the old wiring harness is "done". Age, vibration, exposure to dust, dirt, mud, manure, oil, vibration and rodents have taken their toll. I have used http://www.wiringharnesses.com/ and they are the best value for the $$$.
Better than having a tractor that won't start or bursts into flame.
This would also be the time to consider the 12V conversion.

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