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Subject: New 8n 6 volt charging problems

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dave#1    Posted 07-19-2017 at 22:17:06 [URL] [DELETE]        [Reply] [No Email]  
  • New 8n 6 volt charging problems
  • New 8n moves and runs great but doesn't seem to be charging by reading the amp gauge, The gauge does drop when you turn on the headlights.

    This tractor sat for a few years,should I be polarizing something or exciting something to get it charging ?? , I've always been lost with generator systems.

    Tractor is a late 1950 front mount dist.


    dave#1    Posted 07-23-2017 at 18:01:14 [URL] [DELETE]        [Reply] [No Email]  
  • Fixed Thanks
  • Big thanks to you guys and big thanks to our Ntractorclub "How To's ", Test # 6 found the problem and seems to have fixed it, after grounding the field out on the regulator several times it now charges all on it's own, The battery is bad and will do as Tim said and buy a good one, I had bought a cheap 6volt for a different tractor and only got 2 years out of it !!

    Thanks again


    Tim Daley(MI)    Posted 07-20-2017 at 08:08:16 [URL] [DELETE]        [Reply] [No Email]  
  • Re: New 8n 6 volt charging problems
  • If that is the battery that was in it when you brought it home, chances are it is junk. Start with the basics first before buying any new parts. Verify battery is good and will sustain a charge under load. If bad, get a new good brand one. I've found that spending another extra $20 on a good Interstate or DEKA battery is well worth it than a bargain house priced tsc, Auto Zone, O'Reilly's, Wally World, et al battery. You can also perform your own generator motoring test -see our HOW-TO's here. Trusty local starter/alternator shop guy can bench test battery, generator, VR, and more too, usually for free. Ammeter discharge when lights are ON is normal.

    Tim Daley(MI)

    Tyler (MD)    Posted 07-20-2017 at 05:08:18 [URL] [DELETE]        [Reply] [Email]  
  • Re: New 8n 6 volt charging problems
  • Nice tractor Jaco. You still have the other 2 8N's?


    dave#1    Posted 07-20-2017 at 07:23:49 [URL] [DELETE]        [Reply] [No Email]  
  • Re: New 8n 6 volt charging problems
  • No, I have the other "THREE" 8n's LOL
    I have my first early 50 8n, Then I have a 1951 8n I mow with and I still have the 49 8n I bought from Stumpy that has the Sherman combo That needs a major refurb.

    Stumpy(NH)    Posted 07-25-2017 at 08:27:20 [URL] [DELETE]        [Reply] [No Email]  
  • Re: New 8n 6 volt charging problems
  • That's an understatement! Wondered if you still had it.


    steveVa    Posted 07-20-2017 at 02:58:51 [URL] [DELETE]        [Reply] [No Email]  
  • Re: New 8n 6 volt charging problems
  • I think you meant to say side mount dist. If the battery is fully charged it wont show much charging. Run the lights a few minutes and then turn them off. Then it should show charge for a few minutes. Charging issues are usually a connection, the voltage regulator, or the brushes in the generator. Check the voltage at the battery before and after you run it with the lights on for a few minutes with the tractor turned off. If not cha4ging, tap the VR with wood block or something while it is running qnd see if amp ga jumps. Same thing to the generator.. Nice looking tractorl.

    dave#1    Posted 07-20-2017 at 07:30:03 [URL] [DELETE]        [Reply] [No Email]  
  • Re: New 8n 6 volt charging problems
  • Thanks guys!

    Ya, miss spoke Side mount.
    When I turn on the head lights the amp meter dives to about -8 amps, with lights off the needle is just before the center of the gauge.
    But I will try what you guys suggested, Thanks

    JMOR    Posted 07-19-2017 at 23:35:07 [URL] [DELETE]        [Reply] [No Email]  
  • Re: New 8n 6 volt charging problems
  • It won't do any harm to polarize, but not likely to fix anything either. Measure battery voltage before starting and after running at speed for 10 minutes and see if there is an increase. If yes, then it is charging.
    Polarize by momentarily jumpering between BATT and ARM.

    clayton ingmire    Posted 07-20-2017 at 23:25:52 [URL] [DELETE]        [Reply] [Email]  
  • Re: New 8n 6 volt charging problems
  • remember it is a generator not a alternator and must be reved up probley half throttle to move the amp meter. gen. don't charge much at idle that's why alternators were developed

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