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Farmall & IHC Tractors Discussion Forum
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charging issue

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bm3501466

07-17-2007 14:40:22




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I just had my 12 volt generator rebuilt on my 460. I hooked it up and the amp guage is going the wrong way. The more you throttle the more it discharges. What did I hook up wrong?




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John T

07-17-2007 14:47:07




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 Re: charging issue in reply to bm3501466, 07-17-2007 14:40:22  
If it was just rebuilt, did you Polarize it BEFORE you fired her up????? ? If it got polarized at the shop opposite from your tractor (Pos or Neg Ground) it may harm the Voltage Regulator. You havent changed battery polarity lately have you??? If so the ammeter leads need reversed or it would read bass ackwards. BEFORE you do anything else I would check Polarity and Polarize the genny then see what happens?????

John T

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bm3501466

07-17-2007 14:49:30




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 Re: charging issue in reply to John T, 07-17-2007 14:47:07  
How do you polarize it? The shop guys said that my regulator probably just needed the points cleaned. It is a 12v neg system.



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John T

07-17-2007 15:20:43




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 Re: charging issue in reply to bm3501466, 07-17-2007 14:49:30  
To Polarize the genny use a piece of jumper wire etc to momentarily flash jump the VR's BAT and ARM/GEN terminals together and you ought to get a small spark. Bad or dirty VR contacts could affect performance but NOT the ammeter to consistently register bass ackwards as you explained UNLESS they are like totally bad/burned/stuck and she isnt working at alllll lllll ,,,,, ,, that still sounds like the polarity is reversed,,,,, or it got swapped at some time but the ammeter leads werent reversed,,,,, ,, or else the genny is polarized opposite from your battery connection. Some people rap the VR with a hammer to try n unstick VR relay points but thats not the best method, better to free them up manually then try n clean/buff/polish them n see what happens.

Try to polarize and insure the ammeter is wired correct then if necessary clean/buff/polish up the VR's contacts..... .. Check belt tightness and for a good ground connection on BOTH the Genny and VR.

John T

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Yugrotcart

07-17-2007 14:43:50




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 Re: charging issue in reply to bm3501466, 07-17-2007 14:40:22  
Just reverse the wires on the amp gauge, that should do the trick.

Paul



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