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Charging system question

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JL

09-14-2002 10:02:55




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I put new batteries in my tractor this spring, They werent being charged so I replaced the regulator. Now It still wont charge unless I turn the lights on to cause a discharge and touch a wire to the batt terminal and the gen. terminal. on the regulator. this gains me a slight charge and will stay charging until I shut the tractor off. Once I restart it, I have to force it all over again.. I cleaned and checked the battery connections too. When I force it to charge, The generator is putting out about 12.58 volts which I think is normal. Does anyone have any Ideas where the problem is? Thanks.

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Don Young

09-16-2002 21:02:39




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 Re: charging system question in reply to JL, 09-14-2002 10:02:55  
What you are doing with the wire will properly polarize the GENERATOR. The regulator does not require polarizing and the generator should not require it but once after it is put together. Your problem is similar to lack of polarization in that the generator is failing to initially build up enough voltage to excite the fields. This is probably caused by a high resistance connection between the generator and regulator, commonly a bad ground on either one. A dirty commutator (poor brush contact) can also cause it.
Poor contact on the VOLTAGE unit in the regulator can also cause it. Don't mess with the regulator until you are sure everything else is okay.

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Gordon in IN

09-15-2002 15:39:20




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 Re: charging system question in reply to JL, 09-14-2002 10:02:55  
I think that 12 volt systems usually have a charging voltage of 13.75 to 14.25 Volts in order to get a 12 Volt Battery to full charge.



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Caveman

09-14-2002 22:09:49




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 Re: charging system question in reply to JL, 09-14-2002 10:02:55  
A few things to check..Are you using the correct regulator (6 or 12 volt) depending on the system? Are the batteries hooked right, positive or negative ground depending on the system? If so, did you polarize the regulator when you installed it? This just means to take a jumper wire and make a quick spark between the hot side of the battery to the post on the regulator running to the armature post on the generator. Also, while the tractor is running, pull the cover off the regulator to make sure the points aren't stuck shut. The wire you were using between the bat and gen posts just bypasses the regulator, so the trouble is most likely in the regulator. With everything made in Taiwan these days, it's possible you may have bought a defective regulator too.

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