I've got a 70D that I used last year and noticed the 3 point leaked down slowly. I have had this problem with 3 other JD's and it's always been the gasket on the rock shaft cylinder to housing that's blown out in a small area. Replaced the gasket and everything was fine. So, I planned ahead last fall and got the gasket and rear end gasket from JD in advance and got everything pulled apart today. I took the cylinder off and there is a copper gasket there. Is this a homemade fix or can this gasket be bought somewhere that is copper vs. paper? It's a tad bent up in the center hole and the sq. hole at the bottom doesn't look 100% perfect, which leads me to think someone made it. It doesn't show any blow-out, but if you look at the one pic, there is a shiny "V" from the cylinder to the sq. hole, which might have been leaking, but hard to say. So IF it did work, then it's leaking down somewhere else. I took the piston out, checked the O ring and gasket there, and they look good. No scoring on the cylinder wall or piston. Has anyone ever seen/used a copper gasket here? I wanted to hold off on putting this back together until I got some feedback.
Pat in Montana
Pat in Montana