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Harry Ferguson Tractors Discussion Forum
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Goto 12V or stay 6V

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JRB Indiana

07-09-2006 11:04:07




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I have just purchased A TO=30 with a Davis loader. I need to debug the charging system. If I end up replaceing or repairing the generator I was considering a 12 Volt conversion but don't want to hurt the value of the tractor. Do most people consider a 12 volt conversion a + or a minus?




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jrb indiana

07-15-2006 21:44:13




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 Re: Goto 12V or stay 6V in reply to JRB Indiana, 07-09-2006 11:04:07  
I took the generator and voltage regulator into a shop I found out about that checked them for free. They told me the voltage regulator is bad but also the bearings are worn on the generator but they can rebuild it to either a 12 volt or 6 volt generator. If I go to 12 volt should I also get a 12 volt regulator?



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gshadel

07-10-2006 05:52:56




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 Re: Goto 12V or stay 6V in reply to JRB Indiana, 07-09-2006 11:04:07  
There are A LOT of 12V converted tractors running around. A good 12V conversion won't hurt the value of a working tractor (might even help), but it would hurt the value of a trailer queen 100% restored tractor. I've never liked seeing a classic tractor with a Delco alternator slung off the side of the engine with flimsy, home-made brackets. I like the 12V generator option myself.

My TO is a stock 6V system and runs great for me, even on those cold January mornings. I would like 12V myself, mainly for brighter lights, and to be able to hook-up my favorite 12V accessories. I decided a long time ago, if I ever had an electrical repair that was ~the same $$$ as a 12V conversion, I would convert at that time. That has never happened.

The fergy manual walks you through the generator rebuild, (I've done it, easy). If your generator is not putting out the amps, may just need brushes (cheap). Check your V. regulator, those tend to crap out long before the generator does. Check that your grounds are clean to the tractor frame and to the V. regulator.

George

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Jerry/MT

07-09-2006 19:22:08




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 Re: Goto 12V or stay 6V in reply to JRB Indiana, 07-09-2006 11:04:07  
I'll probably get a lot of criticism for my opinion but the I think that reliability data would support it.
The 6 volt system at best is a marginal one( Reference: Internal Combustion Engines 2nd Ed. By E.F Obert para 14.9). The 6 V ignition system needs to be tuned more often and must be running on the money in order to get starting reliability. That, coupled with cold weather demands by the starter motor means that you have to really keep all the connections "tight and bright" have the battery fully charged at all times to get reliable starting. I'm not advocating for 12V for allowing sloppy maintenance, but my machine is a working tractor and when I saddle up and hit the starter, I want it to start and run. i don't want to have to charge the battery, check the connections, clean the points, check the plugs or in other words trouble shoot the ignition and staring system in cold weather conditions. For this reason, my TO-30 has a 12V negative ground system with a Pertronix ignition system.

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Ron Lindquist

07-09-2006 17:59:17




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 Re: Goto 12V or stay 6V in reply to JRB Indiana, 07-09-2006 11:04:07  
I have a TO-20 and got a 8-volt battery, works good. Just had starter problems, fixed and then put back the 6 volt and it works with everything set pretty close.



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Paul in AZ

07-09-2006 16:17:17




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 Re: Goto 12V or stay 6V in reply to JRB Indiana, 07-09-2006 11:04:07  
If you simply go to a 12v generator and not an alternator, you will not detract from the tractor's aesthetic value. Here is what Big Dean, a retired Ferguson/Mf mechanic suggests in response to a question:

"I would like to convert my TO-30 tractor from a 6V generator system to a 12V generator system. What do I need to do?"

1. Secure a 12V generator (Delco models 1100359, 1100362, 1100434, 1100435, 1100529, or 1100998 will fit and you can use the same mounting bracket).
2. It is best to replace the 6V coil with a 12V unit with a built-in resistor. An alternative is to continue to use the 6v coil and add a ballast resistor in the line from the ignition switch to the coil.
3. You will need a 12V battery. Ground it negatively.
4. Reverse the wires on the terminals of the ammeter.
5. It is not necessary to replace the starter with a 12V unit. Just don’t crank the starter for long periods of time as it will heat up a bit sooner than a 12V unit will because of the extra voltage.
6. If you have lights you will need to change the lamps in the headlights and work light and the bulb in the taillight to 12V.
7. You may wish to polarize the generator, particularly if it has been unused for a long period.

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souNdguy

07-10-2006 07:44:37




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 Re: Goto 12V or stay 6V in reply to Paul in AZ, 07-09-2006 16:17:17  
I'm wondering why the info states that you need to go to neg grnd for the 12v gen conversion. Seems positive ground would be better.. even if it is a 12v system. The gen won't care.. it will charge either way depending on how you have it and the regulator cutout polerized.

Soundguy



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