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Leyland tractor alternator

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Dsims

10-26-2005 09:10:51

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Alternator expertise needed. I converted my Leyland 154 tractor to an alternator after the generator failed (generators aren't available). This involves rewiring (to eliminate the voltage regulator) and also reversing the tractor's polarity since the tractor is originally positive ground. I did all this sucessfully with one small glitch. The alternator (which came from a Leyland parts supplier) has a positive (+) post which I connected to the battery circuit. It has another post labeled "W". I discovered that the alternator does not put out voltage on startup unless a jumper wire is used to momentarily connect the + and W posts. Then it puts out 14 volts as long as the engine runs, but you have to do this every time you start. I only touch the wire momentarily because it seems to draw a lot of current and shouldn't be connected all the time. I've thought about connecting a wire from W to the starter solenoid circuit, with a large resistor in the path, so the alternator would get its short voltage "prime" when starting but no big current draw. I'm hoping someone knows about this and can explain the W post to me as well as how to wire it. Thanks.

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oli

01-04-2006 20:20:32

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Re: Leyland tractor alternator in reply to Dsims, 10-26-2005 09:10:51

you could try using a momentary switch, like a horn push button switch from the battery pos+ or starter solenoid back to the terminal marked W, just press the switch after the tractor fires.
this worked on a neighbours grey fergi just great.

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