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retired farmer
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Joined: 15 Jun 2011
Posts: 1379
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 Posted: Thu Dec 27, 2012 4:51 pm Post subject: OT/ Calling Janicholson |
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Warmed up a little today so I took my volt meter out to the Ford to check the battery voltage. It had dropped to 10.5 volts with the cables being unhooked. I removed the alternator but there wasn't the regular nut holding the wire on, only a black two wire plugin type that went to a square black box built into the alternator. I hooked up the voltmeter between the positive cable and the terminal and then unplugged the wire from the black box. It took about ten seconds for the needle on the meter to drop from five volts down to about .2 on the voltmeter which was close to the zero on the scale. I plugged it back in and the needle slowly came back up to around five volts. So I assume from what you wrote me last night, the alternator has a problem and is grounding out and the battery must have also died about the same time. I didn't check anything else as it started snowing right then.
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Janicholson
Tractor Guru
Joined: 30 Jan 2004
Posts: 18245
Location: St. Cloud, MN
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| Posted: Thu Dec 27, 2012 6:02 pm Post subject: Re: OT/ Calling Janicholson |
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If the battery was dead after being disconnected, it is a sulfated (dead cell) battery. Before condemning the regulator/alternator. put a different battery in it and do the test. .1 volts is OK. 125milliamps of current. If more like 5 volts that which makes it go away is at fault. Jim
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