(800) 853-2651
SHOP NOW

8N voltage regulators

T

TomT

Member
can someone out there tell me the difference in the regulators no a `48 or `49 8N -vs- a later 50 to `52??? I`m working on a `52 8N with the stock generator and 6V system...I ordered an new regulator from the YT site...the new reg. looks like the early `47 `48 reg, but it has a different part #...I`m guessing if they were the same, YT would only sell one part#...any help will be much appreciated. Tom T
 
During the production run, 8Ns had three different generators & VRs. The earliest had lower current output & 3 brushes (3rd had adjustment screw on rear plate with which current output was set) & used a non-current sensing VR. Later used 2 brushes (right side mount & the left side mount) & produced greater current output. Now days, typically the after market world replaces VRs for all those with a single part number (& it often comes with a mounting adapter plate) to cover all applications and mounting hole patterns.
 
JMOR........don't fergitt the early 8N voltage regulator was mounted on rubber baby-bumpers. Found out they didn't need'em so it is 1-size fitt-all now with a plate fer some applications. Remember, after you replace yer voltage regulator, you need to re-polarize everything. Just arc-spark the side-by-side ARM & BATT, ignition OFF. I use a short stubby screwdriver, butt you kenn use bailin' warr iff'n you want........electrical Dell
 
Thanks, Dell and jmor...I really appreciate;

The new regulator I bought here at YT had the small mounting holes...no room for the rubber insulators...That was what had me getting dizzy, and about to tip over...glad they`re not needed!

TomT
 
(quoted from post at 17:30:37 12/15/17) Thanks, Dell and jmor...I really appreciate;

The new regulator I bought here at YT had the small mounting holes...no room for the rubber insulators...That was what had me getting dizzy, and about to tip over...glad they`re not needed!

TomT
Click to expand...
I got tired of fighting bad regulators and went 12 volts, best decision I have made in a while!
 
As JMOR explained, the early 8Ns used a 3-Wire/3-brush generator. In early 1950 it was changed to a 3-Wire/2-Brush style and also a new VR introduced. The original AUTO-LITE VR's mounted on three rubber feet/insulators. The aftermarket VR's sold today do not use the rubber feet -to be discarded when replacing the VR. The new VR's should come with a mounting bracket that also will house the light switch if used. The 2-brush generator obviously does not have the 3rd Brush adjustment screw on the back plate. Do you have the original, correct 8N-10145 tensioning arm on it? Also, it would be a good idea to polarize the new VR once it is connected and before you apply power. Get a copy of Wiring Pictograms by JMOR -an essential document to have. If you want to sell me your original AUTO-LITE voltage regulator, email me.

ORIGINAL 8N ELECTRICAL WIRING w/AUTO-LITE VR:
oImEDIXl.jpg

ORIGINAL 8N-10000-A GENERATOR & AFTERMARKET VR:
dSPH1FQl.jpg

NEWER VOLTAGE REGULATOR WITH MOUNTING BRACKET/LIGHT SWITCH:
enysCFLl.jpg

Tim Daley(MI)
50 52 FORD 8N Voltage Regulator
 
(quoted from post at 12:07:07 12/19/17) As JMOR explained, the early 8Ns used a 3-Wire/3-brush generator. In early 1950 it was changed to a 3-Wire/2-Brush style and also a new VR introduced. The original AUTO-LITE VR's mounted on three rubber feet/insulators. The aftermarket VR's sold today do not use the rubber feet -to be discarded when replacing the VR. The new VR's should come with a mounting bracket that also will house the light switch if used. The 2-brush generator obviously does not have the 3rd Brush adjustment screw on the back plate. Do you have the original, correct 8N-10145 tensioning arm on it? Also, it would be a good idea to polarize the new VR once it is connected and before you apply power. Get a copy of Wiring Pictograms by JMOR -an essential document to have. If you want to sell me your original AUTO-LITE voltage regulator, email me.

ORIGINAL 8N ELECTRICAL WIRING w/AUTO-LITE VR:
<center><img src="https://i.imgur.com/oImEDIXl.jpg"></center>

ORIGINAL 8N-10000-A GENERATOR & AFTERMARKET VR:
<center><img src="https://i.imgur.com/dSPH1FQl.jpg"></center>

NEWER VOLTAGE REGULATOR WITH MOUNTING BRACKET/LIGHT SWITCH: <center><img src="https://i.imgur.com/enysCFLl.jpg"></center>

Tim Daley(MI)
50 52 FORD 8N Voltage Regulator
Click to expand...

Tim, Thanks for the good photos... sorry, I don`t have the original vr...The tractor I`m working on (`52) was one I found in a local scrap yard...It had been dropped in a end dump trailer, then pounded in with the track hoe...The dash, hood, steering column hood gas tank were all smashed beyond use...I bought another 8n (`50) for parts...I have it running now, and getting it ready for paint. Thanks to everyone for all the help on this issue...I`m sure I`ll have many more questions. TomT
 
Tom - there are differences between a '50 8N and a '52 8N -notably the '50 uses the front mount distributor and a '52 uses the angle (side) mount distributor. Voltage Regulators are slightly different; generators are different too. nnalert will have the correct VR and wiring for your '52.

Tim Daley(MI)
 
(quoted from post at 07:56:23 12/22/17) Tom - there are differences between a '50 8N and a '52 8N -notably the '50 uses the front mount distributor and a '52 uses the angle (side) mount distributor. Voltage Regulators are slightly different; generators are different too. just 8n's will have the correct VR and wiring for your '52.

Tim Daley(MI)
Click to expand...

Your host here at YT have the correct parts. I like to buy my parts from them to show appreciation for this site.
 

Thank you for the update, Tim...I went with the regulator I ordered here at YT; it was ordered for my `52; but did not come with the flat plate for mounting a light switch.

I currently have a `45 2N, and `49,(my birth year), and `50 8Ns, in addition to the `52. the `49 is my every day use tractor, and the other 3 are projects.

thanks for your help! TomT
 
(quoted from post at 21:59:23 07/10/19) Is there any way possible to purchase this original style voltage regulator ?
Click to expand...
expect that the only possibility is to find an old one that is still functional.
 
You must log in or register to reply here.

Similar threads

1
1952 8N voltage regulator or resistor?!?
2 3
Replies
42
Views
1K
JMOR
J
S
Another 8n Charging Issue
Replies
11
Views
385
FWB in SK
F
D
found unknown voltage regulators in attic
Replies
5
Views
2K
DMartin9N-2N
D
D
Wiring 2N with 8N10000A Genny and 8N10505C Regulator
Replies
16
Views
2K
Dave G9N
D
J
1948 8N rebuild progress
2 3 4
Replies
67
Views
2K
soaked
S
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.

Copyright © 1997-2024 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

Back
Top