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I know we like to keep things era correct when we can. But there are times that newer technology is just better. If this were a museum or tractor show queen then keeping the original generator would be desired. But for a working tractor that you want to depend
upon I think you’ll be happier in the long run going this route. All my old tractors have been retrofitted with alternators, and some have (or are getting) LED lights. So nice when everything works, and you have great light to work by.</div>
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Brad</div>
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<span style="font-weight:bold">From: </span>AT <at-bounces@lists.antique-tractor.com> on behalf of Dean Vinson <dean@vinsonfarm.net><br>
<span style="font-weight:bold">Date: </span>Monday, December 9, 2024 at 4:21 PM<br>
<span style="font-weight:bold">To: </span>'Antique Tractor Email Discussion Group' <at@lists.antique-tractor.com><br>
<span style="font-weight:bold">Subject: </span>[External] [AT] 3020 generator -> alternator<br>
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Well, after several months of on-and-off tinkering with the charging system on my recently-acquired JD 3020, with occasional brief periods of apparent success followed by intervals of “Okay, now what?”, I decided to replace the generator with an alternator.
For a while I’d been content with just hooking up a battery tender trickle charger now and then, but the typically short duty cycles of how I use the tractor (lots of startups and brief trips, few periods of sustained use) made for a lot of charging. And
the red “GEN” light kept glaring disapprovingly at me.</p>
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So the alternator route appealed to me for its high likelihood of success as well as the higher-amp charging rate. Cost ended up being fairly significant, probably $250 between the alternator, a new mounting bracket, wire, various heat-shrink terminals, and
miscellaneous bolts and nuts. And of course getting everything aligned just right took some fiddling and a bit of head-scratching and foul language application. But the finished product looks pretty good and seems to work as it should: GEN light comes
on when I turn the key but goes off when the engine starts, and a voltmeter shows about 13.8V at the battery when the engine is at idle and about 14.7V at higher RPMs. I’ll be curious to see whether the battery keeps up now or still needs the charger now
and then. While I had the cowling and hood off I noticed the back of the 3020’s dashboard is already prepped with space and mounting brackets for two additional gauges, so I could theoretically add an ammeter and voltmeter if I feel the need to tinker further.</p>
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One particularly fun moment happened when I was trying to get the mounting bracket sorted out. It’s a heavy-duty thing from All States Ag Parts, specifically for 3010-4020 tractors, but according to their website the slots for the mounting bolts are “Bored
for early models with 3/8" bolts” and “Will work for late models with 7/16" bolts but will need to be drilled out to fit.” I needed them reamed out but quickly realized my little hand-held drill and twist bits weren’t up to the task, so I went to the local
mom-and-pop hardware store to see what they had that might help—and by chance had picked the exact moment when the high school shop teacher was also in line at the cashier. Turns out the shop class likes to do little real-world projects now and then so the
kids get the practical experience, so he took the bracket and got the slots reamed out a little for me in just a couple of days. Small-town life for the win. :)</p>
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I also talked with him about another potential project, boring out and installing a bushing in the clutch pedal of my Super M to tighten it up where the pedal rotates around the shaft. He thought that’d be a particularly good one since the students are always
interested in tractors and trucks and such, and because it’d be a good exercise for them to look at the tractor, talk with me about the problem, brainstorm solutions, figure out materials and processes, etc. One of his focus areas, in addition to the shop
curriculum, is helping students learn to interact constructively face-to-face with customers—which he says is usually hard for them, since they’re so used to everything being sent to them via text or on their laptops or whatever. I’ll get back in touch with
him about that early next spring.</p>
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Meanwhile, the 3020 seems happy and I’m hoping this task is no-kidding finished.</p>
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Dean Vinson</p>
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Saint Paris, Ohio</p>
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<img width="1067" height="800" id="Picture_x0020_1" src="cid:image001.jpg@01DB4A5E.BE8E9C40" style="width:11.1145in; height:8.3333in"></p>
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