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How can you tell the polarity of a generator on a JICase VA tractor 1942-1945 with a pos ground battery

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Posted on Jan 02, 2017

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SOURCE: Battery polarity

yes it is correct it is just the way it is

Posted on Aug 17, 2010

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SOURCE: changing from Pos ground generating

It would seem best to just remove all of the original low voltage wiring completely. You won't need the 'cutout' device any more as the diodes in the alternator will replace that function. Does the ignition switch have a 'start' position? If not, then suggest finding a normally-open push button switch for a start button. Is the ignition system a points/coil/capacitor unit or a magneto. If a magneto, it needs to be grounded with a kill switch. If the points/coil system, then the key should apply power to the coil connection through a doubled resistor when running. You will also need a 12 volt battery of course. Change the starter solenoid to a 12 volt unit. The starter will draw about double the current used at 6 volts, but will likely survive if you don't 'grind' the engine. Depending on the tractor, there may be a 12 volt starter available that will fit. If you have an ammeter, it should be in series with the battery connection at the starter solenoid and the ignition, lights, and any other light loads (never in series with the large starter cable). That should cover most of your concerns, but understanding what I have written may be a concern. I don't have a wiring diagram specifically, so I hope this helps!

Posted on Sep 12, 2010

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How can you tell the generators polarity on a pos ground tractor. JICase VA 1942-1945


I beleive every time you unhook your battery on a generator system you have to flash it to set the polarity . Also I think all delco 6 volts were pos ground . But this video from youtube should help you get it working. Polarizing Your Delco Remy Generator on Farmall SA Super

Dec 15, 2016 | Garden

2 Answers

I have a john deere 2010. with a generator it is a pos ground when I got it someone put a alternator on it dose this change the ground to a negative


To be sure you can use a test light, touch one lead from the test light to the frame of the tractor and the other lead to the Positive + terminal of the battery if it lights up it is negative ground if not touch the negative - terminal of the battery and if it lights it is positive ground.
One thing to check if it was converted to negative ground is that the switched the wire on the ignition coil.

john-deere-2010-generator-pos-ground-qumruwi2utlvsp5qakcuppif-5-0.jpg Using your test light you need to turn the key to run position, touch one lead to the negative - terminal of the battery and on the ignition coil touch the Bat + threaded stud it should light and means it correct and do nothing. if not touch the Dist - threaded stud and see if it lights if it does move the wires on the ignition coil to where every wire on the Bat + threaded stud is moved to the dist - and every wire on the Dist - threaded stud is moved to the Bat +.
There is a good chance your charge gauge is backwards also , it swings in the direction the current runs and when it was reversed so did the needle on the gauge and in the case it does not mean it is discharging.

Apr 12, 2016 | John Deere 420,1020,2010,2020,2510,2520...

1 Answer

No electric output, how do I diagnose, capacitor, proper winding check etc.


Have you tried flashing your generator? Sometimes the magnets in the generator loose their polarity. Google and YouTube "flashing a generator"
HFLASHING the GEN

Sometimes the magnets lose their polarity. This worked on my brothers $1200 gen. Its worth a try. Good luck!
Check all wires/connections first, Then try this-
(Remove spark plug wire first!)
To flash the field on a small home use generator, get an ext. cord & cut off the female end of it & strip the wires & connect the wires to a 12 volt car or lawn tractor battery, & plug the male end of the cord, into the 120 A.C. side of the generator.

Make SURE that the black wire which is POS/HOT on an A.C. cord, gets connected to the RED/POS. side of the auto battery, & the white wire on A.C. cord gets connected to the BLK./NEG. side of the battery. If the ext. cord wires are not black & white, then the smaller prong of the plug is the POS./HOT

Plug the other end of the ext. cord into the generators 120 volt side (**remove spark plug wire**) & pull the starter cord 4-5 times, then remove the ext. cord, reconnect the spark plug wire, start the unit & plug something of 120 A.C. volts in to see if it works. Then let it run for about a half hour with 2 - 150 watt lights to help re-generate the unit.


Read more:http://www.doityourself.com/forum/outdoor-gasoline-power-equipment-small-engines/188605-recharging-generator-field.html#ixzz29QwjlAOWere's one way-

Dec 17, 2014 | Coleman Cable Coleman 5000w Progen...

2 Answers

How do I hook a 6 Volt Battery up on Farmall Cub Tractor


look for positve on battery a + sighn is what you are looking for on battery then find positive battery cable in tractor no witch it between pos cable neg cable hook neg to battery fist to battery then hook up positve cable ready to start

Sep 02, 2014 | Garden

1 Answer

I have a 3010 John Deere +24 volt pos ground how do I change from 24 volt gererator to a 24 volt altenator


The 3010 24v JD system is not a true 24v system. It is a balanced split 12v system, with one positive ground battery and one negative ground battery. The only 24 volt accessory is the starter, where the batteries meet in a series to provide 24 volts for starting. All other accessories are 12v, half powered by the positive ground battery and half powered by the negative battery. The generator charges one battery in one direction and the other battery in the reverse direction. Therefore a 24v alternator is not easily adapted to this system.
The usual solution is to change to a 12v system with an alternator, changing the starter to 12v and changing the polarity of the positive ground battery to negative ground.
The cost of a 12v starter and alternator is far less than the cost of a 24v alternator, plus the added benefit of using 12v lights and other accessories.
JD switched to this 12v type of system with alternator during the 20 series production, but used two 6v batteries in a series due to the larger cranking amp rating of the 6v batteries occupying the same physical space.

Jan 10, 2011 | John Deere 4020 Gas & Diesel Tractor...

2 Answers

Should i have a continuity reading from the power lug on my 9n starter to the frame? i have removed the slipcover and the armature turns freely but when i put a battery charger set on jump across it it...


is this 6 or 12 volt? also is this positive ground or negative ground? if you pull the starter and put it on a bench ( lets say this is neg ground and 12 volts) put red charger clamp on the post and touch the black clamp to the casing (where it bolts up) it should turn over. things would be hooked different if its 6 volt or if its pos ground

Jan 07, 2011 | Ford 8n,9n,2n, Tractor Starter With Drive

1 Answer

Used generator after katrena worked fine but now wont generate any etric power


If its been sitting a long time you may have to flash the rotating fields. ( residual magnatism is to low or gone ),Try plugging a drill in the receptacle while generator is running and turn the chuck as fast as you can in the direction where you can feel resistance.If this doesn't work. put 12vdc( car battery works fine) to your collector rings for 1 second or so. be sure to observe polarity. you put positive to pos. and negative to neg.

Aug 15, 2010 | Coleman Powermate Premium Plus 6250W...

1 Answer

79 sportster charging system voltreg and generater keep going out with new battery


This is unusual since the generator is usually pretty tough. I've got one question. Are you properly "polarizing" the generator? To "polarize" the generator, you need a piece of wire that will reach from the battery to the generator.

"With the generator on motorcycle and connected to regulator, connect one end of a jumper wire to the generator armature terminal. Momentarily touch the other end of the jumper wire to the positive terminal of the battery. This restores the magnetism, Remove the jumper."

This is directly out of an H-D service manual. The 'polarizing" procedure should be done anytime any part of the charging system is removed from the bike. Since a generator produces a DC current, this insures that the current is of the correct polarity.

Also, make sure that the voltage regulator that is bolted to the frame is well grounded. It depends on this ground to regulate the voltage. We usually put one of the "star" type lock washers between the regulator and the frame on each of the mounting bolts. The teeth on the washer dig into the frame and the body of the regulator providing a good ground. And, make sure that you've got the wires properly connected. The green wire goes to the "Field" terminal and the two tan wires go to the 'Armature" terminal. If you need a complete schematic, contact me directly at wd4ity@bellsouth.net

Good Luck
Steve

Jun 21, 2010 | 1979 Harley Davidson XLH 1000 Sportster

1 Answer

Dayton SU936C generator starts but no power


Check brushes. Must be at least 1/2 " long. Check all connections. To flash field: use 12 volt battery neg. - goes to machine ground. Pos + goes to the pos+ brush, the one that's not grounded. Give it a couple seconds on the 12 volts.

Aug 05, 2009 | Electrical Supplies

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