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65-68 4000 w/3cyl gas SOS
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what tranny will fit

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Beth Shaw

06-19-2001 15:50:19




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I have a very well running 65-68 ford 4000 w/ 3 cyl gas motor and a bad SOS tranny. I need some help--

What models will interchange?? doe sit need to be a 3 cyl gas? will a 3000 tranny fit??

Do I need to replace more than the tranny? the rear end? the PTO?

Does anyone know a good resource or can you offer me some help in hunting for a replacement tranny?




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mike jenezon

06-22-2001 23:17:59




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 Re: 65-68 4000 w/3cyl gas SOS - what tranny will fit in reply to Beth Shaw, 06-19-2001 15:50:19  
if fixable fix the sos I just got mine going it is a 70 4000 3 cyl gas sos and and i love the sos i used it for cutting and bailing it is way better than a manual trans driving wise second it would probbably be as cheap or cheaper to fix the sos. my 2cents mike



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texadian

06-22-2001 13:49:18




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 Re: 65-68 4000 w/3cyl gas SOS - what tranny will fit in reply to Beth Shaw, 06-19-2001 15:50:19  
Like other posters, I would recommend repairing the transmission. If it will creep along, the most common (and expensive failure - the input shaft and drive hub splines stripped) is eliminated. If it's been running without a filter it's possible that material worn off the bands and clutches has simply contaminated the control valve. Will it try to creep in all speeds? If yes, there's a good chance there's no serious mechanical failure.

To replacing the transmission with another Selectospeed you's need one from another 1965 or newer (3-cyl) 4000. A 2000, 3000, 5000 or 1964 and older transmission will not fit. It could be from either a gas or diesel tractor.

To replace the transmission with a manual shift you need to change the engine flywheel, clutch and add a PTO drive clutch in the rear axle. 4000 Selectospeed transmissions have the PTO clutch in the transmission, 4000 manual shift transmissions have the PTO in the rear axle.

Good luck

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Beth Shaw

06-26-2001 09:29:14




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 Re: Re: 65-68 4000 w/3cyl gas SOS - what tranny will fit in reply to texadian, 06-22-2001 13:49:18  
Thank you for the input. After reading your post I contated my area New Holland dealer and he concured with what you said and he suggested we try removing, cleaning and replacing the main releif valve. I am going to talk this over with my mechanic and hopefully give it a try.

I really appreciate all of the input and ideas.

I will keep you all posted on my successes or failures.



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TOM

06-21-2001 05:34:50




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 Re: 65-68 4000 w/3cyl gas SOS - what tranny will fit in reply to Beth Shaw, 06-19-2001 15:50:19  
For what it's worth, I have a 65-68 2110 (2000)LCG,previously an SOS which now is a 1970 3 cyl. 4110 (4000), 8 speed trany and the original 2110 rear end, sheet metal, steering, etc. It works great and I believe no major modifications were made for the blending of these units.

The bottom line is, it can be done but have someone who knows tractors work with you because I don't think this conversion is found in any book.

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Eric MacKinnon

06-23-2005 16:13:50




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 Re: Re: 65-68 4000 w/3cyl gas SOS - what tranny wi in reply to TOM, 06-21-2001 05:34:50  
I may need your expertise in a while as I am buying a Ford 4000 with SOS. The trans is in good shape now...when those SOS"s go I hear they are a bear to fix and very costly. I think a conversion will be the way to go.? Any tips/advice?



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RICKWI

06-19-2001 19:07:42




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 Re: 65-68 4000 w/3cyl gas SOS - what tranny will fit in reply to Beth Shaw, 06-19-2001 15:50:19  
Has anybody diagnosed what is wrong with the "bad" transmission? It just might be a lot easier and cheaper to fix it rather than replace.



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Beth Shaw

06-20-2001 05:19:33




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 Re: Re: 65-68 4000 w/3cyl gas SOS - what tranny will fit in reply to RICKWI, 06-19-2001 19:07:42  
I have been working with a friend of my husband, who is an experienced tractor mechanic however he is not really familiar with the Select-o-speed transmission. We have both a shop manual and a set of parts manuals. When we purchased the tractor we were told it had fuel problems - which seemed right, since the carburator had been completely rebuilt and there had been no fuel in the carburator since the previous owned had had it rebuilt. We found a plugged fuel line. After clearing that and replacing the common tune up stuff the tractor fired right up and runs GREAT. The mechanic then went to move the tractor - it did move and seemed to be OK although it shifted hard. I had purchased a new filter and new fluid. When the mechanic drained the fluid he said it smelled burnt, when he went to replace the filter THERE WAS NONE, the previous owned was running it with out a filter. After cleaning the screen and installing the filter and new fluid the tractor would barely creep along. He checked the pressure and said it was low. He said there was almost no adjustment left to the #1 band and it smelled burnt. I have spoken some local farmer familiar with this tractor and they said I should look at getting the transmission replaced. I have been unsucessful in contacting the previous owner in reguards to the transmission. What do you think??

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Larry 8N75381

06-20-2001 09:57:38




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 Re: Re: Re: 65-68 4000 w/3cyl gas SOS - what tranny will fit in reply to Beth Shaw, 06-20-2001 05:19:33  
Beth,

I have a friend that has a '67 3000 with SOS. He LOVES it!! I have an 8-speed 3000. I have driven my buddies. The shift on the "fly" is really nice. I now have a 2110 LCG with SOS. It was "rode hard and put away wet" - I see some yellow paint so I supect it was a right-of-way mower, you know how much care the guys that drive those things take of the equipment (since they don't own it!) - so I have been fixing things on it more than I have used it. The brake pedals will not move independentaly. The high pressure line from the pump had a crack in it which I managed to cause to blow out! :-( BUT the SOS has seemed fine so far.

I would lean toward repairing the SOS. To swap it out means, among other things that you will need a new two stage clutch. It could get as expensive as the repair job.

When you say you have the shop manual, is it the Ford shop manual? If it is the I&T, then "run do not walk" to the nearest NH dealer and get the "REAL" shop manual. The part number is 40200050 (still good as of last week - I just checked) , and is for 1965-1975 thousand series tractors. BIG section in it on the SOS - a must have for you.

Being that you have a later 4000, not the 4 cylinder version that was really just an 800, there should be parts still available for your SOS. You should ask at the NH dealer if he has, or knows of, a mechnic that was trained to work on the SOS. Even if the mechanic is retired, he may be willing to help - with his knowledge, not the actual physical labor.

I assume that you know about the drive line clutch that you MUST disengage before you tow the tractor.

Keep us posted on your progress.

Regards,
Larry

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