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How to detect an electrical leak?

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Andy in Ohio

06-26-2002 19:24:46




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Ive got an M" that has been switched to 12 volt. When I shut the tractor off the battery runs down> How can I trace a leak in the electrical system ? Thanks for any replies Andy PS Its not a 1 wire alternator




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Ed

06-30-2002 11:52:22




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 Re: How to detect an electrical leak? in reply to Andy in Ohio, 06-26-2002 19:24:46  
To test electrical drain in the system, take off the negative battery cable from the battery. And clip your test light on the negative battery cable. And ground the test light, to the tractor. And start removing fuses or wires off electrical components until the test light goes out and that will be your drain, in your electrical system.



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Doug in OR

06-27-2002 11:48:41




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 Re: How to detect an electrical leak? in reply to Andy in Ohio, 06-26-2002 19:24:46  
As stated in other replies, take the wires off, one at a time. With an indicating light or ammeter, you'll note if any of the circuits are drawing current. One item to note.. pin one of the alternator is used to excite the alternator. Be certain this connection is made *after* your ignition switch - else current will leak back through the alternator whenever the engine is not running. Finally, be sure the problem isn't the battery itself. It is possible that your battery simply won't hold a charge - or has an internal leak of it's own.

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IH puller

06-26-2002 21:33:28




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 Re: How to detect an electrical leak? in reply to Andy in Ohio, 06-26-2002 19:24:46  
sounds like you have a bad regulator. take the cap off yours. when the tractor is running both relays shuld be togethet like a set of points. when you shut the tractor down one shuld open, breaking the circut. if it dosent open this is your problem. i replaced on on my 706 yesterday and one on dads jd a today.



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just_an_idiot

06-26-2002 21:03:36




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 Re: How to detect an electrical leak? in reply to Andy in Ohio, 06-26-2002 19:24:46  
i had the same problem a couple years ago. It was thought the gen was bad so it was converted to 12 volt. same problem. i found my amp gauge was shorted out. Most of the wiring is in the box on the post.



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REM Mo.

06-26-2002 20:21:39




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 Re: How to detect an electrical leak? in reply to Andy in Ohio, 06-26-2002 19:24:46  
Shut off the tractor and disconect one of the bat cables at the bat. Connect a test light between that cable end and the bat post. If you have a current draw on the system it will light the test light. Start disconnecting things one at a time until you disconnect something that makes the test light go out. You have found what is causing the current drain on the bat.



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