Generator cut out 1940 9N

oneofeach

Member
Aluminum casting the two threaded holes are too far apart for cut out or regulator, I have 1940 model. Can someone enlighten me? No safety interlock starter on this casting.
 
first 12500 Ns used a regulator. They were a different animal. Ford offered an adaptor plate for those converting to later generator and cut out.
 
I believe my steering box has to be in the first 12500 can one get the original regulator or adapter plate
 
http://www.link_disallowed/howtos/pdfs/The-History-of-the-Ford-Ferguson-9N-Tractor-Generator.pdf
 
(quoted from post at 20:54:30 02/08/19) I believe my steering box has to be in the first 12500 can one get the original regulator or adapter plate
ot a snow ball chance in H____.
You can probably make one easy enough.

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The first early 9N's used the 9N-10000-A generator; a 2-Wire/2-Brush B-Circuit design, output rated at 7 amps, which used a special voltage regulator that was mounted to the lower steering box on a cast boss with two tapped holes -see picture. Around s/n 12500, the 9N-10000-B generator was released and also the new round-can cutout it used. There was mounting kit, a flat bar with 4 holes, two inside tapped for the new cutout, sold by Ford to adapt the cutout to when swapping out the A genny for the B genny. The B genny was an A-Circuit design and you could not/cannot use the VR with B genny nor the cutout with the A genny. You need to define your generator first. Just because you have a 1940 model does not mean you still have the OEM generator. The 9N-10000-B generator was the first to have a 1-Wire/3-Brush, A Circuit Design unit, output still rated at 7 amps. This used the round c an cutout. All Ford Tractor generators after til the 8N model used a 1-wire/3-brush unit with the cutout. The 9N-10000-C unit was released later and was with a larger armature, thus a larger barrel, with output rated at 11.5 amps. The 2N-10000 unit was virtually the same internally, only now had the belt tensioning device attached. The 9N-C unit is what is copied and sold nowadays -no belt tensioning device. The aftermarket cloning folks have no clue what I'm talking about. So, if you have the early 9N-A genny, you can use the FAG-10505-A Voltage Regulator, the NAA unit, as the NAA went back to the B-Circuit design. You will need to fab a mounting bracket for it though. If you have a 1-wire/3-Brush unit, you need the cutout, and a mounting bracket. I have one if you need. My 9N generator article is only at the NTC site, under How-To's -they won't allow anyone to mention them here by name as that is why it says 'disallowed' in the link in the post below.

EARLY 9N FORD TRACTOR 9N-10000-A GENERATOR & 9N-10505-A VOLTAGE REGULATOR:
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FORD 9N-10505-A VOLTAGE REGULATOR:
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Tim *PloughNman* Daley(MI)
 

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