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Subject: new ford 8n owner

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thad    Posted 10-02-2018 at 11:06:21 [URL] [DELETE]        [Reply] [Email]  
  • new ford 8n owner
  • Hi everybody I just purchased a 1948 ford 8n I was wondering what gear would be too high to leave the PTO engaged for the hydralics for the 3 point hitch
    Thanks thad

    Tim Daley(MI)    Posted 10-03-2018 at 03:55:51 [URL] [DELETE]        [Reply] [No Email]  
  • Re: new ford 8n owner
  • HiYa Thad-
    Welcome aboard the NTC. Read our HOME page mission statement and see what features we offer -MANUALS, HOW-TO's, N-BOARD, HISTORY forums all offer plenty of free advice and documents. As a new N-Owner, many strongly recommend investing in the essential manuals and read religiously. The original 8N Operator's Manual; the I&T F-04 Manual, and the 39-53 MPC (Master Parts Catalog) are very important tools to have handy. The important factors to know about your tractor are, A) is it a 9N, 2N, or 8N. The 9N and 2N are basically the same, after s/n 12500, as they both had a 3-speed transmission and only DRAFT CONTROL in the hydraulic system. The 8N introduced POSITION CONTROL and the 4-speed transmission. B) Does it have a front mount distributor, used from 1939 thru early 1950. C) Does it have the original 6V/POS GND electrical system or has a 12V/NEG GND switch over job been done? Some have even added the modern EI (Electronic Ignition) to theirs. Whatever setup you have, it is vital that it is wired correctly. One excellent document to have is in our HOW-TO's/ELECTRICAL forum. SEE LINK below to get there now. It is "WIRING PICTOGRAMS BY JMOR". JMOR put together a document including pictures showing every correct way to wire these old N's whether 6V or 12V. Download a copy for yourself.


    Tim Daley(MI)

    K.LaRue-VA    Posted 10-02-2018 at 15:37:33 [URL] [DELETE]        [Reply] [No Email]  
  • Re: new ford 8n owner
  • The gear ratio does not affect PTO speed. PTO shaft is driven off the transmission input, so only engine speed and the clutch pedal affect PTO speed. Step on the clutch, transmission and PTO both stop.

    John in Mich    Posted 10-02-2018 at 19:44:48 [URL] [DELETE]        [Reply] [No Email]  
  • Re: new ford 8n owner
  • If a tractor is equipped with a pre-transmission, Sherman, Hupp, F&T then the pto speed can be affected.

    carl nny    Posted 10-03-2018 at 16:33:06 [URL] [DELETE]        [Reply] [Email]  
  • Re: new ford 8n owner
  • I have the Sherman Combo and the PTO speed is not affected. Just saying.

    carl nny

    Kirk-NJ    Posted 10-05-2018 at 02:59:57 [URL] [DELETE]        [Reply] [Email]  
  • Re: new ford 8n owner
  • In my video you can see the effect on the pto with one revaluation of the engine.

    carl nny    Posted 10-04-2018 at 11:57:57 [URL] [DELETE]        [Reply] [Email]  
  • Re: new ford 8n owner
  • Looks like I was wrong... I have only used the PTO a couple times and never noticed. If I ever use it again I will have to pay attention.

    dave#1    Posted 10-06-2018 at 09:52:17 [URL] [DELETE]        [Reply] [No Email]  
  • Re: new ford 8n owner
  • I also have a Sherman Combo, I tried mowing with it, In high range the blades turned so fast it sounded like a helicopter ! I thought the dang thing was going to take off ! LOL, And in low range it would sometimes just mash the grass down.

    John in Mich    Posted 10-04-2018 at 16:27:42 [URL] [DELETE]        [Reply] [No Email]  
  • Re: new ford 8n owner
  • You momentarily had me thinking twice about it. LOL Old philosophy about tests in school. Even if you get it wrong, you still learn something. You do NOT want to overspeed PTO driven equipment.

    K.LaRue-VA    Posted 10-03-2018 at 20:07:34 [URL] [DELETE]        [Reply] [No Email]  
  • Re: new ford 8n owner
  • John is correct.
    I also have the Sherman Combo auxiliary transmission in my 8N. Here's the back of the Sherman ad brochure.

    Since the Sherman goes in front of the transmission, changing from straight gears to high or low range most definitely does change the PTO speed. I use this "feature" frequently to get more power to run my cutter in tall grass. If the grass is too thick for standard drive first gear 1500 rpm, revving the engine up is going to increase ground and blade speed by the same amount. That is no help. If I reduce engine speed or slip the clutch, the ground and blade speed drop by the same amount. That does not help either. However, drop the sherman to low range, then rev the engine up. Now the ground and blade speed is about the same as it was in standard range first gear, with the engine turning 1800-1900 rpm making more power.

    John in Mich    Posted 10-03-2018 at 19:10:29 [URL] [DELETE]        [Reply] [No Email]  
  • Re: new ford 8n owner
  • Hm, had brush hog blade sound like a jet engine with my 8N Sherman in high range.

    Farmer Dan    Posted 10-02-2018 at 11:13:54 [URL] [DELETE]        [Reply] [Email]  
  • Re: new ford 8n owner
  • Gee, I never turn my PTO off ;-)

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