Update!!! I found the problem and made a video on youtube.
There was debris in the control valve!
or search "Ford 1710 or 1700 Tractor hydraulics not working/slow"
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Ford 1710 or 1700 Tractor hydraulics not working/slow.
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I have a 1710 without loader. Rear hydraulics will not lift!
I blew air down the rubber hose low-pressure tube to clear debris and it would work great for a few minutes.
I drained hyd fluid and replaced fluid and filter. (The 1710 has spin-on filter, not screen filter like the 1700)
There is no...