3point hydraulic distribution valve is new still leaking down

[Charles 1947]

1985 farm pro replaced hydraulic distribution valve but 3point is still not working properly it leaks down what's my next step any help would be greatly appreciated

 

[TractorTech]

The first thing would have been resealing the 3pt cylinder piston. To diagnose, with weight onvyour hitch, raise your 3pt up, turn the 3pt rate drop valve off/closed, assuming it has one, and turn the tractor off. If the hitch drops, then it is the piston seal.

 

[TractorTech]

Just found this post after posting my response:

3-Point Hitch - Farm Pro (Jinma) 2425 hitch will not stay up

Hello again, I have a Farm Pro (Jinma) 2425 that the hitch will not stay up. There is a adjustment knob under the seat that controls the rate of drop ( I think) and if I tighten it all the way the hitch will stay up, but then it will not drop. I just had it serviced and it did not seem to stay...

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