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Harry Ferguson Tractors Discussion Forum
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Re: fergie TO-20 3 point/hydraulics issue

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Steve@Advance

02-02-2014 18:28:46
107.203.134.67



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As Tony said a couple posts back, get a manual!

The control linkage for the lift is complex. A picture tells a much better story. The fact that it moved slightly forward and back is good, that's all it's supposed to do. If there is rust accumulated around the upper linkage, it can interfere with it's operation. The only way to really free everything up is to pull the top cover and disassemble it. Not hard to do, but heavy!

But first, open the right inspection cover and test/cycle the control valve. Once in there, you will see where the control linkage pushes on the valve roller linkage. You can push the roller to the side and unhook it from the control lever. Cycle the spring loaded valve back and forth several times to dislodge anything that may be in the valve. Start it up,look in the case with a flashlight and see where the moving parts are. Being EXTREMELY careful, reach in and move the roller lever forward and the lift should go up. Let it return and it should go down.

If this test is successful, the valve in the pump is good. If this is not successful, the pump will need to be pulled to service the valve.

If the valve tests good,reconnect the lever to the roller and try the controls.

If it still malfunctions, there is an adjustment nut below the roller, but again, a manual will explain much more than I can here.

Back to the water in the transmission... That is a common problem. If stored outdoors, it will get in around the shifter boots AND around the upper draft link, where the upper link of the three point connects. There is a rubber boot under the seat that rots away.

Again, be careful reaching in the transmission with it running! There are moving parts in there, even in neutral!

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samn40

02-03-2014 15:57:34
86.153.193.143



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 Re: fergie TO-20 3 point/hydraulics issue in reply to Steve@Advance, 02-02-2014 18:28:46  
Steve, I think you are describing the workings of a 35??? Smitty has a TO 20!.......... Sam



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Steve@Advance

02-04-2014 08:01:15
108.245.66.82



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 Re: fergie TO-20 3 point/hydraulics issue in reply to samn40, 02-03-2014 15:57:34  
Oops! My bad. That is a 35 I was describing. Didn't do my homework.
The 20&30... They don't have draft control do they?



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Jason S.

02-04-2014 08:19:49
204.54.36.245



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 Re: fergie TO-20 3 point/hydraulics issue in reply to Steve@Advance, 02-04-2014 08:01:15  
Quoting Removed, click Modern View to see

Yes they have draft control. They do not have position control.



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smittyslilfergie

02-02-2014 19:12:18
76.204.113.212



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 Re: fergie TO-20 3 point/hydraulics issue in reply to Steve@Advance, 02-02-2014 18:28:46  
thanks , got 2 manuals which show some of what I need but can never replace a veterans personal knowledge. I was looking for real troubleshooting and I really think you explained better than a book



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Steve@Advance

02-02-2014 20:11:13
107.203.134.67



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 Re: fergie TO-20 3 point/hydraulics issue in reply to smittyslilfergie, 02-02-2014 19:12:18  
One more thing, the original oil requirements called for a very heavy oil. That won't work in cold weather.

The new recommendation is either 10w40 engine oil or universal tractor transmission oil, made just for old tractors that share the trans oil and hydraulics. Tractor Supply has it.



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Jason S.

02-03-2014 05:50:22
204.54.36.245



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 Re: fergie TO-20 3 point/hydraulics issue in reply to Steve@Advance, 02-02-2014 20:11:13  
I wouldn't recomend universal tractor fluid as most of it is not yellow metal safe. Which means it will eat away at the bushings in the transmission. Either go with the 10w30 engine oil or the GL1 90 weight mineral oil.



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smittyslilfergie

02-03-2014 04:43:25
173.13.14.81



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 Re: fergie TO-20 3 point/hydraulics issue in reply to Steve@Advance, 02-02-2014 20:11:13  
I did use the 90w tractor oil from Tractor supply , this is the oil for everything ...should I replace with a lighter fluid ?



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Jason S.

02-04-2014 18:30:03
174.237.38.67



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 Re: fergie TO-20 3 point/hydraulics issue in reply to smittyslilfergie, 02-03-2014 04:43:25  
Quoting Removed, click Modern View to see

The GL1 90 weight mineral oil will work fine. Yes it is thick when it is cold but if you let your tractor warm up first it will be fine. I have GL1 in mine and I routinely use it in cold weather. I just let it warm up for a bit before I use it. Go ahead and use it since you already have it in there. No reason to waste $50.00 worth of oil.



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Steve@Advance

02-04-2014 18:06:57
107.203.134.67



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 Re: fergie TO-20 3 point/hydraulics issue in reply to smittyslilfergie, 02-03-2014 04:43:25  
Yes 90W is going to be too heavy, especially in cold weather. The hydraulics will move very slowly. But it will work until you get the problems worked out, just in case you have to drain it to work on it.

I would also be concerned with the cleanliness of the bottom of the case. To my knowledge there is no filter on the pump intake. Since there was water in it, there's probably rust falling down from where the water condenses above the oil level. All you can do is clean it best you can, vacuum and blot it out before refilling it.

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smittyslilfergie

02-03-2014 04:39:05
173.13.14.81



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 Re: fergie TO-20 3 point/hydraulics issue in reply to Steve@Advance, 02-02-2014 20:11:13  
I will give this a try tonight and reply with my findings. The manuals I have are from 1950 and the cartoon pictures are blurry , I will find a newer manual as I have a feeling this will not be the last time I stick my hands in the guts of this ole fergie. so far from what I see these old tractors are simple design and very fixable in most environments but you guys are the key with your experienced advice.

You guys are Awesome and way better than a manual,

Thanks

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