Old tractor hydraulics. Any pros here?

Discussion in 'The Garage' started by Purcell69, May 1, 2012.

  1. Purcell69

    Purcell69 Mors ex Tenebris

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    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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  2. Cutsit

    Cutsit Been here awhile

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    Try www.ytmag.com

    There is a Ferguson board there full of experts.

    Good luck.
    #2
  3. Purcell69

    Purcell69 Mors ex Tenebris

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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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  4. TrailRider

    TrailRider Been here awhile

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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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  5. Purcell69

    Purcell69 Mors ex Tenebris

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    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.

    -Joe
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  6. 2speed

    2speed Puching adventurer

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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.
    #6
  7. RoadGrime

    RoadGrime Been here awhile

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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! :lol3
    #7