Re: Re: Converting Generator to Altenator system
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Posted by Andy on June 04, 1998 at 07:08:50:
In Reply to: Re: Converting Generator to Altenator system posted by LANDON on June 03, 1998 at 21:21:37:
: : Is it possible (mounting considerations aside) to use a basic 12 volt AC Delco Altenator on the electrical system of a 12 volt JD
: : 60? I notice that there is only one wire coming from the NEGATIVE pole of the battery, thgrough the ammeter and to the
: : voltage regulator mounted on the current generator. A wire also goes from the same post on the regulator back to the ignition
: : switch (seems weird to me but it works). I assume that these wires can be attached to the "Battery" post on the altenator but
: : what do the other two terminals (titled simply "1" & "2") attche to? Also, I have heard that there may be some modification
: : needed to the coil? Any help on this would be greatly appreciated as I have already started ripping things apart. Maybe there is
: : some publication explaining all of this but I know it can be done. THANKS! : HEY ANDY E-MAIL ME ON ANYTHING YOU FIND OUT. I'M TRYING TO DO THE SAME THING ON A JOHN DEERE MT. THANKS LANDON Landon, Here is something somebody at another site said: It's a little confusing but no problem.
The number "1" wire is connected to the stud on the alternator body - the one marked "B" or "bat" or some variant thereof.
From this stud, run a wire to the ammeter and thence to the battery as before, also to the ignition switch. Both wires must be 12
gauge or better.
The number "2" wire is the "exciter" circuit for the alternator. It needs a small feed of +12volts at start-up to start the
alternating-current-generation process. Run a wire from the switched side of the ignition switch (the side that gets "hot" when
the switch is "on") to this terminal. This connection must be broken when the ignition is turned off, or the battery will discharge
through the alternator. Some folks put a switch in the wire, but you have to remember to turn that switch "on" after you start the
tractor and "off" when you stop it. Some folks put an oil-pressure swiitch in this wire, so the switch closes when the oil pressure
rises and opens when it drops. And some folks put a diode in the wire - 50 volts, 1 ampere is fine, get 2 for 69¢ at Radio
Shack, insert it in the wire with the arrow pointing towards the alternator.
I don't know what polarity your JD was built with but if using an AC-Delco alternator, it must be negative ground. It sounds
like it was positive ground. No matter - reverse the battery terminals and the ammeter connection and everything will work just
the same.
Hope this clarifies for you.
llater,
llamas
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