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Order Ford NAA Parts Online

What has Hi-Lo trans: Jubilee, NAA, 600, 800?

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Danny Yerks

02-29-2000 07:29:55




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I'm looking for a small utility tractor. I've driven several brands, including Fords. I like the Ford Jubilee/NAA, the 600 series, and the 800 series except for one thing: not geared low enough. Didn't some of these come with a Hi-Lo trans option? If so, how much reduction did it have (was it 2:1)? How rare is the Hi-Lo option? Also, do they all have 3pt hitch that's independent of the PTO? That is, will the 3pt hitch work even if the clutch is pushed in?
Thanks, Danny

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Dave Mischler

02-29-2000 09:00:19




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 Re: What has Hi-Lo trans: Jubilee, NAA, 600, 800? in reply to Danny Yerks, 02-29-2000 07:29:55  
All of these tractors have live hydraulics, so you can raise and lower an implement with the clutch disengaged. Some models of the 600 and 800 series also have live PTO (e.g. 660, 860) so you can keep driving the implement with the clutch halfway in.

Only the four-speed models had the option for the hi-lo transmission. Unfortunately, this is not as useful as you may think because the gear ratio change precedes the main transmission; the PTO speed is also reduced accordingly. So if you put it in the low range to brush hog something rough you will still have the same ground speed when the PTO speed is correct. If you are not using the PTO then maybe it will provide an advantage. I think this option was not as popular from 1955 on because of the availability of the five-speed transmission.

Have you found/tried a 600/800 with the five-speed transmission? Models are 650, 660, 850, 860. First gear on this transmission is about half that of the four-speed, and works as desired with the PTO.

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Danny Yerks

02-29-2000 10:23:19




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 Re: Re: What has Hi-Lo trans: Jubilee, NAA, 600, 800? in reply to Dave Mischler, 02-29-2000 09:00:19  
Thanks for the info Dave! It sounds like you're "in the know" on these tractors; do you mind if I pick your brain a little more? Are the 650, 660, 850, 860 tractors much heavier than a NAA (do you know what the weights are)? What years were they made? It sounds like the 1st gear on the 5 speed would be fine if it's that much lower than a 4 speed, but what about reverse? I'll keep my eyes open for one to look at and test drive in my area (southern IN). Are they hard to find? Did they make very many of them?
Thanks, Danny

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Dave Mischler

02-29-2000 10:56:08




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 Re: Re: Re: What has Hi-Lo trans: Jubilee, NAA, 600, 800? in reply to Danny Yerks, 02-29-2000 10:23:19  
See the link for a great site on these tractors. You may find the links in the gray box at the bottom of the page interesting, too.

The unballasted weights vary a little between models, but they are all around 3000 lbs. Fluid in the tires can add another 1000 lbs or more.

600/800 were made from '55 through '57. 601/801 were made from '58 through '61, and the 2000/4000 made '62 through '64 were basically the same tractor.

Reverse on the 5 speed is pretty close to first gear on the 4 speed. I find it acceptable, whereas I thought the 8N reverse gear was way too fast.

I don't know how many were made, but I have seen a few for sale on roads that I normally drive, and I have seen them advertised for sale in my area. They are not as common as 8/9N's, but they are out there.

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Danny Yerks

02-29-2000 14:04:18




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 Re: Re: Re: Re: What has Hi-Lo trans: Jubilee, NAA, 600, 800? in reply to Dave Mischler, 02-29-2000 10:56:08  
Dave, I was told that the ones with the Hi-Lo also have a Hi-Lo PTO, so the PTO speed could be set back to what it should be when the trans is in Lo. Have you ever heard of that? Thanks.



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Dave Mischler

03-01-2000 06:20:44




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 Re: Re: Re: Re: Re: What has Hi-Lo trans: Jubilee, NAA, 600, 800? in reply to Danny Yerks, 02-29-2000 14:04:18  
No, I never heard of that. The shop manual is pretty clear on what the Ford hi-lo tranny will do. I did hear of an after-market multi-speed rear-end by Howard that would not bring down the PTO speed, but those are rare and apparently fragile. You could grow old trying to find one of those in good condition, and you could probably never get parts for it if it broke.

Some of the Select-O-Speed units had a 2-speed PTO, but the Hi-Lo transmission wouldn't fit. These transmissions also have a reputation for poor reliability and expensive repairs.

I suggest you look at actual tractors in your area. Visit the local dealers and see what they have (both whole tractors and parts, maybe even test drive a few tractors that way). Arm yourself to the teeth with model info, serial numbers, etc. Many owners do not know what they have, and some intentionally misrepresent their machines.

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