I was going to explain to you just what Owen did but could not have done it any better. when you said it only leaked down till it got to 2500 that was the clue needed. If you would place the gage in the upper end of the cylinder it would demonstrate that the pressure is equalizing across the cylinder and for all practical purposes you have a system that is being held up by a effective piston the size of the cylinder rod. If you warm the oil in the system then hold the system against relief anf feel the inlet fittings on the cylinders the one leaking through should get hot while the good one will stay cool, You could double check by lifting the loader up , allowing it to settle till it stops and then with the engine shut off pull the lever to the raise position and it should go down as you have opened a return on the rod end of the cylinder to sump. I believe you said it was the lift circuit so I assume two cylinders. Your senses are your best tool when diagnosing hydraulics, I have worked since 62 using methods such as this. mEl
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