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  1. #11
    Platinum Member Rocky Hoffler's Avatar
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    Jul 2010
    Posts
    554
    Location
    N. Central Fl.
    Tractor
    Kubota L4600

    Default Re: JD 4110 won't charge battery

    Most of the time the alt light only comes on if alt is not charging previous post suggest to look at glow plug circuit if it has greater draw than what alt will put out it like having money in bank and wife is taking out more than you are putting in you go broke after a while. alt light should light when eng off and key is in run position most of these have a terminal on alt that runs light check and see if wire has came off of terminal.

  2. #12
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
    Posts
    4,852
    Location
    North Texas
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: JD 4110 won't charge battery

    Is alternator belt snug?

  3. #13
    Elite Member Zebrafive's Avatar
    Join Date
    Aug 2010
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    3,069
    Location
    South West MI
    Tractor
    John Deere 2030, John Deere 6415

    Default Re: JD 4110 won't charge battery

    You stated the battery/alternator light is not working. Also you replaced the bulb. So no light when turning key to ON for bulb check? If so you need to find out why. Normally the 12volts to the battery/alternator light is what excites the alternator to start it charging. When charging the alternator voltage cancels the battery voltage to the light and it goes out.
    John Deere 2030 JD 245SL Loader
    John Deere 6415 mfwd JD 640SL Loader

  4. #14
    Elite Member Zebrafive's Avatar
    Join Date
    Aug 2010
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    3,069
    Location
    South West MI
    Tractor
    John Deere 2030, John Deere 6415

    Default Re: JD 4110 won't charge battery

    Quote Originally Posted by joecdeere View Post
    I have a PDF of the Deere Tech manual you're welcome to. If wanted shoot me your email

    Joe
    Can you post the charging system wiring diagram? If not PM me for email for tech manual PDF
    John Deere 2030 JD 245SL Loader
    John Deere 6415 mfwd JD 640SL Loader

  5. #15
    Platinum Member joecdeere's Avatar
    Join Date
    Apr 2002
    Posts
    674
    Location
    Cumming,Georgia

    Default Re: JD 4110 won't charge battery



  6. #16
    Veteran Member
    Join Date
    Dec 2000
    Posts
    1,714
    Location
    Southern VT, Southern ME
    Tractor
    John Deere 4100 HST /410 FEL, R4s

    Default Re: JD 4110 won't charge battery

    Faulty diodes have been the cause of many a problem. The earlier models, mine included didn't have them. I'm curious though to see the glow plug circuit diagram on a 4110

  7. #17
    Platinum Member joecdeere's Avatar
    Join Date
    Apr 2002
    Posts
    674
    Location
    Cumming,Georgia

    Default Re: JD 4110 won't charge battery



  8. #18
    Veteran Member
    Join Date
    Dec 2000
    Posts
    1,714
    Location
    Southern VT, Southern ME
    Tractor
    John Deere 4100 HST /410 FEL, R4s

    Default Re: JD 4110 won't charge battery

    Thks for that post!

  9. #19
    Elite Member Zebrafive's Avatar
    Join Date
    Aug 2010
    Posts
    3,069
    Location
    South West MI
    Tractor
    John Deere 2030, John Deere 6415

    Default Re: JD 4110 won't charge battery

    Thanks for the diagrams. The battery light is not wired as I thought.
    John Deere 2030 JD 245SL Loader
    John Deere 6415 mfwd JD 640SL Loader

  10. #20
    Bronze Member
    Join Date
    Jul 2014
    Posts
    94
    Location
    NE Ohio
    Tractor
    John Deere F935

    Default Re: JD 4110 won't charge battery

    Quote Originally Posted by driscollt View Post
    Well, when I disconnected the relay completely - the tractor would not start. I had to leave 2 of the 3 leads and then it would start. Either way, no increase in voltage at the battery. I probably will need to replace it to see if that is the issue. Anything else I can check? or ideas? Thanks
    Replacing parts to see if that is the problem is not the right way to fix the problem.

    It sounds like two different problems. No battery light comes on, and the alternator is not charging.

    First check the fuses/diodes.

    I would then suggest a simple test: unplug the voltage regulator (VR) and use a jumper to get 12v to the 605 circuit - blue with a white tracer. Doing this should turn the bulb on. If it doesn't, there's a problem in that small circuit. Fix the problem so that the bulb turns on when it should.

    If the battery is showing 12.5V when the tractor is running, the alternator is not charging the battery. If it was, when running there would be 14.0-14.5V across the battery terminals. But the OP tested the alternator by itself, and it "appears to be working". Also, the VR was supposed to have been replaced...even though it may not have needed replacing. Could the VR have been installed/connected incorrectly?

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