I have an MT372d with hydraulic problems. I need a new cap that bolts on the hydraulic case where the external adapter bolts. It is a three bolt patern with an oval shaped o-ring. Also prior to a hole blowing thru this part the front bucket got to where it would not lift. It just sounded as if it were sucking air but the fluid level is fine. I disconnected the quick connects and reattached them and it started to work for a moment but then stopped angain. Any ideas?