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Harry Ferguson Tractors Discussion Forum
:

TO 30 Hydraulic problems

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wjajr

05-15-2020 12:19:34




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I'm new to this tractor world, and have acquired a blue Dealer Shop manual, and owner's manual for my TO 30.

I have watched several you tubes of Rachel and others repairing hydraulics, and it is all starting to sink into head.
My lift does nothing, previous owner has the arms shimmed in the up position with a length of 2x4. I got this tractor four years ago after it sat unused in a damp garage since 1998. Got it running,and driving around dooryard. Now it's time to get the 3 point working.

25+ year old luid is up to correct level, and rather yellow/orange colored. I suspect it has some moisture contamination. Looking through fill hole atop transmission those gears look nice and shiny, no corrosion to be seen.
The control spring is snug and can be turned by hand, however its adjusting yoke is stuck from rust, and I did not force it. Plan is to cut plunger and replace with new plunger and yoke. I think I saw somewhere a Ford 9N matched plunger & yoke will fit the TO 30.

Before I remove the round inspection covers, will some of the hydraulic fluid need to be drained down below those openings?

From the You Tubes I gather the non-functioning hydraulic system could be fixed by simply replacing relief valve, or to performing a complete rebuild of pump and top lift piston.

The PTO turns, goes i and out of gear easily, however there was some nasty looking sludgy oil with shinny metal flake that came out when cover was removed. I haven't had the off since I first got the tractor. The shaft when turning looked to have a little run-out.
So what should I do first, look in through inspection holes and see what is or is not happening? Pull out relief valve, and control valve looking for crud plugging them, or what?

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wjajr

05-29-2020 13:44:26




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 Re: TO 30 Hydraulic problems in reply to wjajr, 05-15-2020 12:19:34  
My new books arrived several weeks ago; Dealer shop manual,Ferguson TO 30 owner's manual, Free Tuning Up Your Tractor, and that easy to read and locate stuff Ferguson TO 30 Tractor Parts catalog. These publications helped understand inner workings of the machine, in particular its hydraulics.

I just install a pair of new strut rods and ends, and set the toe. The old ones were bent, one even had a length of angle iron welded onto it making is some what straight.

When I started tractor, the drawbar lifted up. That was a first, previously I could not get it to move, and previous owner has shimmed it up with a length of 2x4 painted to match the tractor; very stylish it was. I did not take the time to see if it would respond to height control lever, had to move some dirt with Wagner Loader WM-4, and no extra time to play this afternoon with it.

Where would one dispose of water contaminated hydraulic oil? Around here auto part stores and Walmart take up to five gallons of clean used oil a day per person, but not contaminated oil.

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John Deere D

05-17-2020 07:58:03




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 Re: TO 30 Hydraulic problems in reply to wjajr, 05-15-2020 12:19:34  
If and when you remove the Top Lift Cover.....

Bob.. Owner Ferguson, MF 35..Ford 2-N...etc,etc,


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wjajr

05-16-2020 08:07:21




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 Re: TO 30 Hydraulic problems in reply to wjajr, 05-15-2020 12:19:34  
Thanks, I'll dig into this today.



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marloweg

05-16-2020 15:48:38




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 Re: TO 30 Hydraulic problems in reply to wjajr, 05-16-2020 08:07:21  
before you pull cover remove the wish bone from the dog bone or you will brake the dog bone . the wish bones are the two long arms that go from the control leaver rod to the pump at the bottom of the rear end best is to drain the oil first could be someone pulled the cover and broke the dog bone fixed one today that was broke



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Steve@Advance

05-15-2020 19:01:38




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 Re: TO 30 Hydraulic problems in reply to wjajr, 05-15-2020 12:19:34  
You can remove the side covers without draining the oil. The proper level is to the bottom bolt hole. If it's over full a little will come out, but not a flood.

Before draining the oil or disabling anything, remove the covers and take a look inside.

With the engine off, feel down to the control spool, be sure the arms are connected and the spool moves with the lever.

Have a flash light ready, get the PTO engaged, start it up and look in, (but do not reach in!!!). Tell the arms to raise, see what is happening.

If oil is streaming down from the cylinder, the piston seals are bad.

If oil is roiling up from the relief valve, the valve is bad.

If none of that reveals anything, drain the oil, remove the PTO shaft, disconnect the control fork, drop the pump. Be careful, it's heavy!

Once the pump is out and disassembled any problem should be obvious.

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Tom h.

05-15-2020 16:55:46




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 Re: TO 30 Hydraulic problems in reply to wjajr, 05-15-2020 12:19:34  
Why not drain everything, be ready for about 6-7 gallons then pull off the covers and inspect everything. Take off one bolt on the control yoke and pull out the plunger, T-looking thing. If it is stuck try slowly working on it.

Before you start that did you make sure pto lever is engaged?

So when your ready to put everything back together use 10w-30 oil, a lot of other members recommend diesel 10-30, Iíve been using regular without a problem.

Donít hesitate to ask us for help

Tom

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