I'm a new member here with a '72 Massey Ferguson MF-14. It has a 3 point hitch, mower deck, dozer blade, and a garden plough (not the 550 Rototiller). Overall, it's in good shape for 43 years old, but I need to do some work on the hydraulic mower deck lift assembly, because the deck hangs crooked (lower on the left side) when it's raised, and so I can only cut evenly with the deck set all the way down. I'm also dragging the left mower deck wheel on the ground all the time, because the left side barely raises, where as the right side comes all the way up.
I checked all the connecting arms - everything is in order. I took the cover plates off between the seat and the instrument panel, and the issue is that the the left arm assembly on the mower lift shaft is positioned lower than the right arm assembly, which explains the problem, I think. I read a 2013 post by Moosetales, and he had removed the shaft from the frame and freed the two arm assemblies, so I removed the square-head bolts and applied some WD-40, but no amount of anything is encouraging these two arm assemblies to loosen up. Tried 3-in-1 oil, too. The shaft will move easily within the bushings on both ends, but the two arm assemblies are frozen tight to the shaft, so this prevents the shaft from moving enough to allow it to slip out of the frame so that I can free the arm assemblies.
Any ideas on how to free these arm assemblies? If I can free the left one, I won't need to remove the shaft or the mower lift assembly - I can simply adjust the position of the left arm assembly and secure it with the set bolt. I've tried tapping the arm assemblies with a hammer, tried knocking the shaft through with a hammer - you name it. Nothing is budging and inch. Only thing I haven't tried is heating it with a torch - not sure that's wise?
On the parts diagram attached, the parts I'm referring to are numbered 2 and 4, and the shaft is numbered 1.
Spent a day on this with no luck, so I appreciate any suggestions!
Edited by ODN, October 10, 2015 - 03:53 PM.