Here you go, get to working on that 4020.RE: John Deere 4020 - JDPlowboy : 09:22.RE: John Deere 4020 - SEK Farmer : 09:05.It was ,by far, their number 1 money maker and top selling piece of equipment. The invention allows the use of one alternator/engine combination to charge either a 12 volt or 24 volt. ![]() A 12-24 volt alternator regulator charges a 12 volt battery or a 24 volt battery depending on the position of a mode switch. Deere field tested the 12 volt systom on 404 engines for quite a few years by using the 12 volt system on both 105 Diesel combine engines and 404 engine equipped construction equipment before they finally started using the 12 volt system on the 1969 4020s.That said they knew what they had in the 4020 tractor and didn't want to risk the reputation it had earned on the farm. Abstract: A dual state power system utilizing power drivers to switch an alternator from 12 volt to 24 volt charging. Could not make one work for love nor money.Had to call out 2 Deere engineers and after about 3 days of working on it, we finally found one wire in a quick disconnect plug that had been installed wrong in the wiring harness.It had worked fine when the generator was on the tractor and had run that way for the year before.Īnyone considering changing a 4020- 24 volt system over to a 12 volt system, have no qualms about doing it and don't hesitate, you will love it. There are 24 volt alternators available for those who want to stay bwith a 24 volt system, but don't ask me why anyone would want to.Deere converted the 5010 tractors over to alternators back in about 1965 on their 24 volt systems.I made the field conversions on the 5010s we sold. You may or may not find a tag on the regulator telling you whether it is either a 12 volt or a 24 volt alternator, but if you determine which system you otherwise have then you will know which alternator you have. The voltage regulator will be completely disconnected from the wiring harness or the regulator might even be completely removed from the tractor. Or one battery could be disconnected completely. With outputs varying from 35A to 150A and 12V up to 24V, our heavy-duty alternators can be used as alternators for trucks, and industrial equipment such as farm equipment or construction vehicles. If you have a 12 volt conversion system then any battery cables going to the starter will only be attached to the solenoid.If you do have a converted system that has been changed to 12 volts then both positive posts will be connected to the starter solenoid aand both negative battery posts will be attached to the transmission case. Probe’s heavy-duty alternators are ideal for long-haul vehicles with a high electrical load. The other will be connected to either the backside or front end of the starter case depending on which starter you have.The 24 volt battery system will have the right side negative post hooked to the left side positive post with a small ground wire usually attached to the positive post on the left side battery. The 24 volt starter will have 2 large battery cables coming to it. The 4020 gas always was 12 volt.įirst thing to do is determine what you have.Who knows what you may now have.You could have either a 24 volt system or a 12 volt system.Don't even look at the alternator until you determine which system you have. Thec 4020 Diesel used a 24 volt starter with a 24 volt generator until 1969 when Deere went to a 12 volt starter and 12 volt alternator. Plus, you can jump start the 24v truck in an emergency.You are logged in as a guest. I like a second 24v battery pack because I use several 24v radios and don't like running down the truck battery. If you add a second (isolated) 24v battery pack to charge directly off the Unimog system, you could then run the camper directly off the Wilmore converter at 13.8v. You might not even need/want a 12 v battery. If you have to buy something, you might look at Wilmore (my favorite) or NewMar 24 to 12 converters. Maybe that'd be useful on the camper? But that also hints at possible heat dissipation limitations. Standard delivered with Alpha Pro III charge regulator for an optimal performance and longer-lasting batteries. This controller says it can dump excess power into a hot water heater. Marks 4WD have designed and manufactured this dual alternator. That extra voltage could cause trouble, especially in heat dissipation requirement due to higher overhead voltage. Dual Alternator Bracket Kit to fit a 12V LHS & 24v RHS High Mount- LS V8 6.0L, 6.2L (VE-VF). The 'mog is going to be providing at least 28 v and probably higher occasionally. ![]() Few solarcells that I've seen put out as much as 24v. However, one consideration would be that a solar charge controller is expecting (probably) a lower source voltage. Looking at the specs, that charge controller should work fine to maintain the camper battery.
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