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Subject: 9N ?

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Tiger Dobrenic    Posted 07-17-2020 at 16:29:37 [URL] [DELETE]        [Reply] [Email]  
  • 9N ?
  • I got a tractor suppose to be 9N and trying to rewire it after 3 yrs of rebuild on it but I see that had a cut out on it and a relay regulator as well, I do not see any wiring diagrams with both yet, when I took them off they looked original and I have a star at the front of my serial number and after it but he number is 26426 it all looked original when I rebuilt it , it has radial arms not I beam type, ferguson butterfly type radiator screen with ferguson and ford label in middle, a generator 2 brush with the 2 set screws tapped into it and the spring bolt adjustment. The steering wheel has three metal arms and the hydro fluid stick is in the rear right on cover. Can anyone tell me which tractor and year this is ??? So, I can rewire it correctly and remove either a cut out or regulator relay?

    Tiger Dobrenic    Posted 07-29-2020 at 12:46:59 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N ?
  • Hi
    Sorry been at VA apt.'s for heart and ortho anyway
    Yes, I saw the round radial arms and it confused me more , the engine is older for sure and it has stars before and after the serial number the generator must be off a 2N ?
    It has the HI LO, and set screw holes in barrel already for adjusting spring bolt and I meant to say my original relay is oval and both the cut out were wired and it as well? I sent you a photo showing them painted orange wired into dash from mounting holes below battery holder

    Tim Daley(MI)    Posted 07-19-2020 at 05:06:18 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • OK Tiger, now that we have a few more important pieces, what exactly do you have -see PIX below? Is it/was it running now? How did you determine it has 2 brushes? You'd need to inspect the unit internally to do that. A 1-Wire unit would be the 2N GEN (or 9N-10000-C) and a 3-Wire Unit would be the 8N-10000- GEN. The 9N-C & 2N unit use the roundcan cutout. The 8N unit uses the rectangular Voltage Regulator. Both have the Third Brush Adjustment Screw on the Back End Plate -see PIX. Do get you running, you need to get the correct 1-Wire 2N GEN with the cutout and the correct wiring harness; or, if you have the 8N 3-Wire/3-Brsuh unit, get the 8N-10505-B Voltage Regulator AND a new wiring harness to wire it correctly AND get a copy of the Service Bulletin on how to install the 8N GEN & VR in a 9N/2N tractor; or, opt to just go with a 12V switch over job. The latter will involve a 12V battery, a 12V alternator, new belt, belt tension device for the alt, and new wiring. As stated now a few times, forget about s/n and model year, get the wiring diagrams from JMOR and the OEM Manuals as shown and use the as your guide.

    2N-10000- GENERATOR -1-WIRE/3-BRUSH, FAN BELT TENSIONER ATTACHED:


    8N-10000-A GENERATOR: 3-WIRE/3-BRUSH –USES THE VOLTAGE REGULATOR:

    Tim

    Tim Daley(MI)    Posted 07-18-2020 at 07:54:44 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • First, don’t rely on a serial number to fully ID your tractor –it only ID’s the engine block and may have been swapped out with another at some time. Go by the important points like front mount dist, correct gen, correct starter, 6V or 12V, and more. The Master Parts Catalogs can help and ID parts. Also, don’t go nt and grille badges or steering wheels. You can get FREE downloads in our MANUALS forum. OEM Owners, Service Manuals, and the I&T FO-4 Manual also have info –electrical diagrams included. Get the ESSENTIAL MANUALS for your shop and coffee table – they are as valuable as any wrench. Your engine block serial number is a 1940 model. Oval tube rad rods didn’t come out til 1944. So, your tractor may be a mutt - parts from others are mixed in. Unless you are trying to do an all correct original restoration, forget about the serial number. So, regarding your descriptions, ALL 9N’s after s/n 12500 and ALL 2N models used the 1-Wire/3-Brush 11 AMP ‘A’ Circuit generator with the roundcan cutout circuit, the 1-Wire Starter Motor and NO Solenoid. Did you mean your genny has TWO wires, not brushes? The front mount distributor, Ballast Resistor AMMETER, and ignition switch were all OEM. The first, early 9N-10000-A genny was a 2-Wire/2-Brush ‘B’ Circuit 7-AMP unit. It used a rectangular Voltage Regulator. At s/n 12500 the ‘B’ generator was used – 1-wire/3-brush 7A, A’ circuit with a HI-LO 3rd Brush slider button and cutout. Both the ‘A’ and ‘B’ unit were small 3-1/2” barrel units. When the 9N-10000-C unit was released, it was bigger, had a 1-Wire/3-Brush ‘A’ design at 11 amps and the 3rd brush adjustment was now a LO to HI screw on the back plate, and used the cutout. Do you have a screw or a button on yours? Only the larger units could use the generator tensioning bracket. The two small early units had no belt tension device and wouldn’t fit in the later accessory option. The fact yours has two screws tells me it is 2N-10000 generator. This was when Ford added the belt tension device as an OEM unit. It was a larger barrel, 1-Wire/3-Brush 11 AMP ‘A’ Circuit with cutout. The 3rd brush adjustment was the screw setting. Also, the 9N/2N starter motor was a 1-Wire unit. No solenoid was used. The solenoid came out in 1947 with the new 8N Model and had 3-wires. What do you mean “…I see that had a cut out on it and a relay regulator as well…”??? There is a starter switch, is that what you mean? What is a ‘butterfly type radiator screen’? Is battery 6V or 12V? Are you trying to wire it as the OEM 6V/POS GRN original electrical system (you don’t tell us)? Our HOW-TO's forum also has a ton of useful documents -click on LINK below for one on 9N generators. Most of our manuals and How To documents are in pdf format and can be opened, saved as a copy, and/or printed pout but you need to have a version of ADOBE on your computer. If you don't, go to How To's and get a FREE and safe download. Finally, get yourself copies of the ESSENTIAL MANUALS as reference material.

    FORD TRACTOR 9N & 2N, AFTER S/N 12500, OEM 6V/POS GRN WIRING:



    FORD 9N-10505-B CUTOUT –USED AFTER S/N 12,500 TO S/N 258504 ON 9N & 2N MODELS ONLY:

    WIRING PICTOGRAMS by JMOR; OEM 9N & 2N ELECTRICAL SETUP:


    FORD 9N/2N ESSENTIAL OWNER/OPERATOR/PARTS/SERVICE MANUALS:

    Tim Daley(MI)

    mhb@Ufe    Posted 07-17-2020 at 18:13:18 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • That tractor originally had a single wire generator with a cutout. Many of the early tractors were up graded to a three wire generator with a regulator. Ford offered a kit to do the upgrade. If you have a three wire generator it will use a regulator. If you have a single wire generator it will use a cutout. Non of them would use both.

    Mark

    Tiger Dobrenic    Posted 07-18-2020 at 09:04:50 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N ?
  • OKAY,
    I have which year and model then 9N or early 2N and should I just wire it without the regulator , just using the cutout under the battery holder? Do you have a diagram that I can reference ? the serial number has a little star at the front and back of it and the number reads 26426 , I guess, IT IS A 1940 9N...

    Tiger Dobrenic    Posted 07-18-2020 at 10:27:36 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N ?
  • Hi
    I have a photo of original wiring before I removed showing both are connected but it does not show where they go to exactly. I have 2 posts on barrel and one on back plate
    with HI LO screw, spring bracket no band

    Tim Daley(MI)    Posted 07-18-2020 at 16:03:55 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • Look above at my post for wiring. You have a 2N generator; a 1-Wire/3-Brush 11 AMP 'A' Circuit design that uses the roundcan cutout -you don't have a Voltage Regulator. Don't go by old pictures either -they may or may not be correct anyway. Use the OEM wiring diagram and JMOR's pictograms. The 2N-10000 generator had the Belt Tensioner Device affixed onto the barrel -see PIC

    The 9N/2N Belt Tensioner was first offered on the 2N-10000 generator as an attached part included with the unit. At the same time FORD offered an optional belt tensioner for the 9N-10000-C generator but used a steel belt that the barrel attached to. NOTE pictures show both. The optional device was a dealer supplied accessory. The generators were virtually the same unit, the same barrel diameter, a 1-Wire/3-Brush, 11 AMP, A-Circuit unit except the earlier 9N-C generator did not have the attached stationery bracket using two bolts. The steel band included the required bracket needed. I have a restored/rebuilt to OEM specs 2N-10000 complete with the belt tensioner for sale and also a tensioner kit for the 9N-10000-C unit. NOTE: The belt tensioner on the first two 9N generators, the '9N-A' and the '9N-B' units will not work. Email is open.


    OEM FORD 2N-10000 GENERATOR WITH BELT TENSIONER ATTACHED:





    OEM FORD 9N-10000-C GENERATOR WITH BELT TENSIONER OPTION – NOTE STEEL BAND:


    Tim Daley(MI)

    Tiger Dobrenic    Posted 07-23-2020 at 11:06:53 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N need color code on wiring
  • I need wiring diagram for mine. 9n cutout regulator single wire starter.

    JMOR    Posted 07-18-2020 at 17:13:50 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • He said, " I have 2 posts on barrel and one on back plate".
    So, Tim, I am afraid we are going to have to disagree.

    Tim Daley(MI)    Posted 07-19-2020 at 04:09:30 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • 10-4 ---didn't read thru it all the way. So, yes, he has the 8N generator and would need the VR with it. The trick is where to mount the VR as no provision on 9N & 2N's. His original post stated, “…[I have] a generator 2 brush with the 2 set screws tapped into it and the spring bolt adjustment.” If he has the two screws for the tension arm, I surmised it was the 2N unit. The fact it has two terminal studs on the barrel and one on the back end plate was an important piece of the puzzle he should have first stated. His gen also has a 3rd Brush adjustment screw. How did he determine it had 2 Brushes? It’s possible, many 3-Brush Units were changed to 2; there’s even a service bulletin on how to do so. Seems somebody sold or he got a hold of the wrong generator. Me? I’d get the correct 2N gen and use the cutout and not muck around with a VR. He’d have to also get a new wiring harness if was to do that.

    2N-10000- GENERATOR -1-WIRE/3-BRUSH, FAN BELT TENSIONER ATTACHED:

    8N-10000-A GENERATOR: 3-WIRE/3-BRUSH –USES THE VOLTAGE REGULATOR:

    Tim Daley(MI)

    JMOR    Posted 07-18-2020 at 12:15:25 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • Two on barrel should be Field(insulator under it) & Ground(no insulator). On rear is Armature. With the FIELD CONNECTION AVAILABLE, THE GENERATOR WAS DESIGNED FOR A VOLTAGE REGULATOR. Originally, it would have had one-terminal generator & used cut out. Someone has changed it over the last 60 years. Surprise, surprise!

    JMOR    Posted 07-18-2020 at 09:54:00 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N ?
  • how many posts are on generator? one or two?

    carl nny    Posted 07-17-2020 at 17:16:19 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N ?
  • I'm not up on all the things you mentioned but the serial Number says that at least the engine is a 1940 9n.. The rest I can't help you with but some more knowledgeable people will surely chime in.

    Carl

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