Just purchased 1962 4000 with SOS problems

Just purchased a 1962 4000 row crop with some SOS problems that I'm trying to diagnose. First when I got it home it wanted to labor and stall out in r1 and r2 and a few forward gears then I changed oil and properly adjusted the bands by the manual and all gears worked great then went to back it into the shop and same thing again started in reverse but labored and stalled. Then I locked it out pushed it back in the shop and happen to pull the dipstick out and the SOS fluid is over filling the hydraulic fluid. Okay any suggestions on what I should do next to figure my problem out I believe its something minor since after fluid change and band adjustment it worked great.
Jason
 

Get a proper shop manual, read and thoroughly understand what you need to know before trying anything. Working on this unit without knowing precisely how to do what you are attempting to do will cause more problems than it cures.

1. If you're certain that the SOS is dumping oil to the hydraulics, drain the hydraulics down to at least normal. Get a mirror and a flashlight. If you can't see the leak with these through the hydraulic fill plug and the engine running, you'll need to remove the round inspection cover on the side and try it there. The only leak that can be repaired without a rear split, is the transmission pressure switch provided your tractor is so equipped. If it's a seal, you'll have to split it.

2. As to your stalling issue, my guess, from afar mind you, is that you'll need to pull the top cover in order to access the control valve. You'll likely need to clean the sticky valves and make them slide or replace the control valve assembly. [b:02f6d4e39f][color=red:02f6d4e39f]Do not do any of this without understanding the procedure and following it to a T![/color:02f6d4e39f][/b:02f6d4e39f]
 
Thanks for the reply, I will probably work on it next weekend again and start by checking the control valve out and the leak in the hydraulic reservoir. Mine don't have the light in the dash so will it have the switch? The manual I have is the ford shop supplement for 2000 and 4000 SOS's cm101102. This tractor has sat inside for a long time (years) without running so that may be the problem. I will read up in the manual on removing the top cover to check the control valve out. The tractor is in very nice condition and I want to fix right so I may need a little help along the way.
Jason
 
Also when it was laboring and stalling in reverse it seemed as if the left wheel wanted to spin and the right one was not moving. If that makes any sense.
Jason
 

If it doesn't have the light, it shouldn't, and I stress [b:3bd312ccf3]shouldn't[/b:3bd312ccf3], have a switch. If one wheel wants to spin and one doesn't, could it be something like a brake binding in that wheel rather than the SOS?

Sunbeam - if he's got the manual he's already got all the troubleshooting info that books or web-sites can give him.
 
Is there a wire going in cover that has trans disconnect in it? If so trans press switch is in hyd conpartment and they do leak in to hyd.
 
This may be way out in right field but I recall that some of the SOS transmissions had a check valve up high in the rear flange of the trans housing. It's purpose was to prevent overfilling the SOS by dumping excess fluid into the hydraulic compartment. It may have been used only on the early ORC trannys and your 4000 should have the DDC tranny. Somebody who is more familiar with the SOS (Larry NCKS or Tony Jacobs) will clarify this.
 
My experience with a SOS that wants to stall when pulled from park is a sticky valve body. Most times it will act better after being warmed up awhile. I was advised to mix 15/40 and dextron IV for fluid. Old ford SOS factory guy turned me on to this. Seams the high detergent helps flush the tranny clean to help the valves from getting sticky. Remember they are cam opened, but spring closed. doesn't take much to have more than one trying to send oil to different clutch packs at once. I am no expert, but have repaired many SOS trannys. This issue is common. Good luck. Al
 

Texas, my experience with complete teardowns on this transmission has been on the DDC type. I'm sorry, but I don't recall anything about a check valve that should dump oil if the transmission gets too full. Perhaps someone else may.
 
Thanks Al I'll be checking that valve body out next weekend. By the way the injectors that you rebuilt back in the late fall cured my problem on the 7000 it runs great now!
Jason
 
In the Ford Service Manual, Chapter II, Section 9, Figure 85. "Transmission Breather (Early Models)". I recall that Carl Davis mentioned it in his SOS teardown at the FFCA convention. Of course a 4000 with DDC isn't an early model.
 
Larry,
I found my trans. output seal is leaking into the
hydraulics but also when I fix that it looks like
the pto shaft may also have a seal is that
correct?
I couldn't find any break down showing that pto
seal or number. I did remove the top trans. cover
and followed the instructions in the manual to
access the control valve but found everything
working very good and nothing sticking on the
control valve. So I guess I will look deeper into
that problem soon also. I did notice band 3 has
some rust on it and that was the band that made
the engine labor when I adjusted it, could there
be an issue there with that or a clutch?
Jason
 

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