Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Farmall & IHC Tractors Discussion Forum
:

6 Volt Alternators

Welcome Guest, Log in or Register
Author 
Craig Thoricht

08-23-2006 17:45:52




Report to Moderator

Hello All-

During a recent surfing session I came across a company that sells conversion kits for 6 volt positive ground alternators based on Delco 10SI units. Do any of the good people here have any experience with these? I know I could just go to 12 volts, but I like this idea. I've seen these on older cars but I just didn't know where to get them,nor did I have the need. My 1950 M just suffered generator failure after finishing the cosmetic work and this is something I'm considering. Please don't notify the originality police. They're already on my trail for putting in oversize battery cables Opinions? Feel free to say whatever.

I also want to thank all for the great info I've picked up here. I've really learned a lot and I appreciate it. Thanks.

Regards-
Craig

[Log in to Reply]   [No Email]
Craig Thoricht

08-24-2006 09:02:12




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
See this link for the info I referred to. Thanks



[Log in to Reply]  [No Email]
F-Dean

08-24-2006 06:36:32




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
BIG JOHN has been putting a Hitachi #14231 alternator on several tractors in place of a generator under the hood. This alternator was used on 1978-79 Nissan 620 pickup with a 2 liter engine and a 1980 Nissan 720 pickup with a 2 liter engine. At NAPA it is part #2138130. The cost of a rebuilt alternator is approximately $50 + core (And they won’t take a generator as a core). The alternator is 4 1/2" in diameter and 7" in length and will go right on the original mountings on the tractor. Use an 8" x 3/8" bolt and some pipe for spacers. Being Hitachi means that it is METRIC. You will need to drill out the mountings to 3/8". The tension adjusting bolt is also metric thread. The alternator is a three (3) wire set up which can be converted to one (1) wire. There are spade connections labeled S & L and a BAT post connection. The L spade is for the idiot light and can be disregarded. Use a jumper wire from the S spade to the BAT post and you are good to go. The pulley may be a split type that you can widen using a spacer (once again metric). You will need to use a disc type lock washer and some “Locktite” because there won't be room to reuse the split lock washer that comes with it. I put the washer between to parts of the pulley to make it fit the existing belt.
There is a built in regulator and a resister to keep the battery from feeding back to the alternator. This is a sweet fit under the hood that he has used on H's, M's and W models, also Cubs and many others. I add the following from my experience:
Be sure to switch the polarity of the battery to Negative ground to avoid damaging the Alternator.
Consequently, you need to switch the wires on the coil, if you are using a coil.
Use a plastic covered connection when you connect the jumper wire from the S spade
On a Farmall M, turning the bracket upside-down will allow the alternator to fit nicely inside the hood using the existing generator belt.

[Log in to Reply]  [No Email]
Pete7

08-24-2006 05:28:35




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
Hi...if you want you can also buy just the kits on Ebay to convert a 10si alternator to 6 volt and/or kits to get the alternators to "turn on" (self excite) at low RPM's. The kits are basically different voltage regulators. For my money, the modern type (solid state) voltage regulator the alternators use are another real good reason to convert to an alternator...much more reliable. I changed my Super A to an alternator a few years ago and have since been completly trouble free.

[Log in to Reply]  [No Email]
Harold Hubbard

08-24-2006 05:00:31




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
I have a C and two Super C's, which I use regularly. It used to be that between the three of them I would replace one generator one starter and one regulator every year, not to mention battery troubles, dim lighhts and poor starting in cold weather. I have had 6 volt alternators on two of them for over ten years now, and the third has been demoted to magneto and crank start. I have had only one repair over the years, and that was because water got into one of the alternators and corroded some connections. I bought the alternators from my local auto electric shop, and at the time they were cheaper than replacing a voltage regulator for the generator setup. A friend of mine made a guard for the alternator because the way I mounted it it stuck out beyond the hood, looked like it would catch things in the pulley. The electic shop offered one with an extended shaft that would have tucked in closer to the block, but it was another $40 that I didn't have at the time. I have them set up like Hugh says, with a pushbutton to energise them.

[Log in to Reply]  [No Email]
Hugh MacKay

08-24-2006 14:34:52




Report to Moderator
 Re: 6 Volt Alternators in reply to Harold Hubbard, 08-24-2006 05:00:31  
Harold: For my alternators on SA, SC and like tractors I use a double pulley off of the old V8 Olds or Buicks. I use the V furtherest from alternator. This gives just enough clearence so I can tuck the alternator within 1/2" of block.

I have my 130 and 140 done the same with 12 volt, but after 15 years that 6 volt Super A has been by far the most trouble free. Super A and 130 were done at same time in 1992. Just this spring I replaced the battery in the Super A. The 12 volt 130 is on it's 3rd battery and second alternator. I only did the 140, 3 years ago.

[Log in to Reply]  [No Email]
Bus Driver

08-24-2006 03:53:15




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
I did one conversion with 6 volt one-wire alternator. It works very well. Has enough output to charge the battery and power extra rear working lights at the same time. The original generator had too few amps output to do the job.



[Log in to Reply]  [No Email]
Hugh MacKay

08-24-2006 01:45:57




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
Craig: I've had one of those 6 volt alternators in my Farmall Super A since 1992. It works very well and has been trouble free. In fact, just this spring I replaced the 6 volt battery I put in new back in 1992. Frist time I ever got any battery 6 or 12 volt to last over 10 years. I might add my Super A has seen a good many -20 to -30 cold morning starts in the past 15 years.

The 6 volt alternator is an easy change over. Just change the tractor from pos ground to neg ground and add the alternator. Most Farmalls will have an extra wire in the harness when you change to alternator. I use that extra wire for exciting the alternator by use of a push button type switch at dash. Just put the push button in circuit, same place as the scientific guys install their diodes. All it takes is a quick push of button after start up to start charging. With the push button, no danger of leaving it on causing feed back when tractor is not running. The push buttom will give many more years of trouble free service than diodes. I don't know if you can even find a diode for 6 volt. Given the trouble I had with them on 12 volt systems, I didn't look very hard. I can tell you my 12 volt tractors currently all have to push button, and I have a box full of diodes and lights.

[Log in to Reply]  [No Email]
John T

08-23-2006 20:00:04




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
Craig, Its YOUR tractor n YOUR money so Id fix it as you please n tell the "Correct Police" to kiss your grits lol. Those alternators are available and certainly NOT Rocket Science and simply have different Voltage Regulator circuits and diode orientations and youre off to the races. True they arent original or correct and Im NOT a fan of conversions generally speaking BUTTTTT TTTTT its also true they have the ability to provide more charging amps at lower RPM's plus can pump more amps if n when needed, sooooo oo you pay your bucks n takes your choices is my advice.

John T

[Log in to Reply]  [No Email]
Turtle H

08-23-2006 18:42:27




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
My local CarQuest auto parts store has them in their catalog.



[Log in to Reply]  [No Email]
Craig Thoricht

08-24-2006 08:59:36




Report to Moderator
 Re: 6 Volt Alternators in reply to Turtle H, 08-23-2006 18:42:27  
I deal a lot with the local Carquest store in the course of my job. They tell me there is no such critter available to them. Could you get me a part number from your guy then I can help my locals learn something new !!!!

Regards-
Craig



[Log in to Reply]  [No Email]
RustyFarmall

08-23-2006 18:19:18




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
Pay no attention to the originality police, they are the same guys that will spend a small fortune on a custom show car paint job and claim the tractor is restored to original condition. If you could, you might post a link to the site where you found the 6 volt positive ground alternators. It just might be a viable solution.



[Log in to Reply]  [No Email]
Larry in CO

08-23-2006 18:39:13




Report to Moderator
 Re: 6 Volt Alternators in reply to RustyFarmall, 08-23-2006 18:19:18  
Rusty,

Here's one site that I google'd. Sounds like a winner if it would fit under the hood of an H. Larry



[Log in to Reply]  [No Email]
K.B.-826

08-23-2006 18:16:06




Report to Moderator
 Re: 6 Volt Alternators in reply to Craig Thoricht, 08-23-2006 17:45:52  
Just about any good starter/alternator shop can do that no problem. It's a good way to go. The real benifit of these 12-volt conversions is not having a 12-volt system, but having an alternator. Any alternator, 6-volt or 12-volt, will keep the battery charged better than any generator, especially on these old tractors that don't get run for any length of time. Going to a 6-volt alternator instead of a 12 will save you the trouble of switching to 12-volt battery, light bulbs, coil, ect. I think lots of guys would go with a 6-volt alternator instead of a 12-volt conversion if they knew such a thing exists.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy