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Old 05-01-2012, 01:14 PM   #1
Purcell69 OP
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Old tractor hydraulics. Any pros here?

I've got a 1951 Harry Fergusson TO-20, (think Ford 8N) that I picked up about 8 years ago for brush hogging and work around the house. I got it cheap and rebuilt the motor myself shortly after purchase. The only issue it still has is the three point lift is slow to drop, taking several minutes to lower, regadless of how heavy the implement on the other end of the lift is. I have been dealing with it all this time, but it is a pain when it comes to grading and isn't practical for running an auger

When I got it, the mineral oil in the transmission and hydraulic pump was cloudy due to emulsion. I changed and flushed all of it with fresh oil and have stored the tractor under cover ever since. How difficult is it to rebuild one of these pumps? Does anyone here have diagrams/instructions for doing this?

-Joe
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Old 05-01-2012, 01:46 PM   #2
Cutsit
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Try www.ytmag.com

There is a Ferguson board there full of experts.

Good luck.
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Old 05-01-2012, 02:05 PM   #3
Purcell69 OP
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Schweet! Thanks. I'm pretty sure I got my rebuild parts through them. I didn't know they had a forum though.

-Joe
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Old 05-01-2012, 02:11 PM   #4
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Sounds like a check valve or relief valve plugged. You can pick up an IT manual for these tractors.
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Old 05-01-2012, 02:24 PM   #5
Purcell69 OP
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Quote:
Originally Posted by TrailRider View Post
Sounds like a check valve or relief valve plugged. You can pick up an IT manual for these tractors.
I have one of those, all of about 20 pages. It wasn't very in-depth when it came to the hydraulics, as I recall, which is why I never did anything about it, but I agree, it sounds like a valve issue.

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Old 05-02-2012, 11:27 AM   #6
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It's not the pump, it's the valve somewhere. They are pretty simple. Take the top off and take everything apart, clean and put back together. With the emulsion, something could have rusted.

Refill with GL-1 90W. The new 90W supposedly eats up the brass with the additives in it.
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Old 05-02-2012, 01:54 PM   #7
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Hey there Percell69, I've got a '53 Fergie, great tractor. Our local Sam's Club sells a combo hydralic/transmission oil that works well with the 3Pt hitch. As for the 'slow' landing, you might want to take out the hyd. pump and give it a cleaning and check all the gaskets. The pump is bolted to the inside of the transmission cover. There are some rods and levers attached, if you can get those off the rest is easy. I took mine out, cleaned it up and replaced a ripped gasket. Now it goes up & down faster than a ... well, it just goes up & down real good now. Good luck!

RoadGrime screwed with this post 05-02-2012 at 02:16 PM
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