On our Ballast Regulator, the front plough wings are operated by some Hydraulic rams. One of which is weeping oil. Easy job, remove the split pin, knock out the pin, repeat at the other end, disconnect the hoses and the ram is off ready to take away for overhauling. Er NO Nearly right. One end freed off. The other split pin off and that is it. The pin rotates 360 degrees, moves up about 1/16 so free in the hole in bracket and cylinder end but it will not go any further. The arc of movement in normal use is about 5 degrees as the ram moves a wing in or out. All the usual persuasive tools including the 40 ton jack that just lifted the machine up in the air. Thoughts are that the pin is ridged and is locking up on the ram end. Any suggestions welcome.