504 had the correct answer. I thought I had checked the free float pin but I apparently looked at the incorrect slot. Either the pin had come out or was never there in the first place.
Here’s how I found the answer.
I backed up to my old Caprice and stuck the fast hitch under the rear bumper. The fast hitch raised that ol’Chev 2 ft off the ground like it wasn’t even there. I shut down the tractor and let it set for 15 minutes and it didn’t sag an inch, so I knew the pump and screen are good and no leak in cylinder or valve. But I still could not raise the rear of the tractor with the fast hitch down pressure.
So I thought I would switch around the hoses on the cylinder to see if it would make a difference. Luckily, the debris guard and the seat had to come off to get to the cylinder hose connections and it was too cold to mess with all that.
I put a block under the fast hitch and ran it up and down watching it. I noticed there was a hesitation in the movement and as the hitch touched the block the hitch stopped but the cylinder kept moving. Bingo! The lightening bolt of enlightenment!
I remembered “504” stating that the pin might be missing allowing the hitch to free float. I had checked that pin but on watching the hitch move I saw that I had checked the wrong hole and the float pin was indeed MISSING.
After I placed a hitch pin in the correct hole the fast hitch raised the rear of the tractor with no effort at all. And a good thing too, I found I had a broken cross link on my tire chains to repair.
Several times on this forum I have given the advice to start from the beginning, checking all the basics first.
I guess I needed a reminder to take my own advice.
Thanks to all for sharing good advice and especially 504 to “check the basics first”
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