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Charging woe's............the rest of the story

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phil(so.il)

11-02-2002 17:30:22




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bg,dell,
and now..... the rest of the story.seems my pal is dealing with a discharge prob,his remedy has been to disconect battery after each use ,if left connected its drained .could there be an internal short in the alternator ..... ...pull and have the "freebe" test done for a starting point?




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yep . . . Dell (WA)

11-02-2002 18:47:33




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 Re: charging woe's............the rest of the story in reply to phil(so.il), 11-02-2002 17:30:22  
Phil..... ...yep, even with this additional information, go get that alternator checked. Even if they charge you, thats the first and eazist thing to "eliminate"..... ..... .Dell



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David Papworth

11-02-2002 18:47:04




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 Re: charging woe's............the rest of the story in reply to phil(so.il), 11-02-2002 17:30:22  
One of the many ways to do the 12V conversion
wrong is to connect both P1 and P2 back to the battery without the aid of the ignition switch. The alternator will charge the battery OK, but the P1 connection will slowly discharge the battery through the alternator's internal regulator unless you interrupt the circuit when the tractor is parked. If this is your problem it should take from overnight to a couple of days to kill the battery.

Use a test light or voltmeter to determine if voltage is present at the P1 connection with the tractor off and the key off. Probe the blade on the alternator with the connector pulled slightly back, or pull the connector off and check the connector end. Voltage should NOT be present at P1.

Voltage should be present at P2 -- one common (and correct) way to wire these alternators is to jumper P2 back to the main output terminal of the alternator, which in turn is directly connected to the battery.

P2 is the voltage sense terminal and draws negligible current from the battery.

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