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1946 A generator

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Frank

06-16-2002 18:26:50




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Generator was not charging so cleaned up the armature , new brushes etc. Now when you start it up it discharges . The battery cables are positive ground, and has magneto ignition.When you switch the lights on when not running amp meter goes to discharge, like it should. What went wrong? Generator had never worked as long as I owned this tractor. Need help Thanks Frank




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tw

06-17-2002 17:50:13




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 Re: 1946 A generator in reply to Frank, 06-16-2002 18:26:50  
Frank, remove the generator. Throw it as far as you can. Go to town and get a Delco Alternator with built in regulator. Add a new twelve volt battery and your troubles are over. I did that with my B and it works really great.



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Clooney

06-16-2002 19:12:43




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 Re: 1946 A generator in reply to Frank, 06-16-2002 18:26:50  
Frank, verify that the [GEN] terminal on the regulator is hooked to the [A] post on the generator,, that the [FLD] terminal on the regulator is hooked to the [F] post on the generator,, & that the battery wire coming from the ammeter is hooked to the [BAT] terminal on the regulator & that it actually has battery power to it. ~Then momentarily touch a jumper wire from the [GEN] to the [BAT] terminal on the regulator, you should see a spark, that will polarize the generator. Then see if it charges.
~If all above is ok & it still doesn't charge, pull the generator belt, remove the wire from the [F] post on the generator, then jump the [BAT] terminal to the [GEN] terminal on the regulator, the generator should start motoring [if it doesn’t, make sure you have battery power to the [BAT] terminal on the regulator & that the wire between the [GEN] terminal on the regulator & [A] post on the generator has continuity] . If it motors, while it is motoring reconnect the [F] wire at the generator & see if it slows down, if so the generator is probably ok & your problem is in the regulator or elsewhere, if it doesn't slow down, ground the [F]post & see if it slows down, if it does, your problem is probably a bad regulator, or the wire between the [F] terminal on the regulator & the [F] post on the generator, or the regulator ground. If it doesn’t motor, your problem is probably in the generator [such as stuck brushes, dirty commutator, broken wire, bad ground, or bad armature],, If it motors & doesn't slow down, your problem is more than likely in the field windings or field terminal connections…

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