WD40 purchased by the gallon. None of that wimpy spray can stuff........
Also keep PB Blaster on hand. Great stuff, works like a charm on siezed nuts and bolts.
These are my two best friends when it comes to rust. Once lossened take a wire brush to the threads, a little WD40 for flavour and you good for several years.
I'm also a fan of anti-sieze as well.
Buy a new one at TSC for $25. Then as you have time try and bust the othere loose with pb buster heat and a big wrench. Your threads may be buggered up not letting it move easily
Out of curiosity, how many of you actually USE the toplink locknut? I don't use mine.
However, when rototilling, Bush Hogging, chipping, or flail mowing with the BX the vibration sometimes will lengthen the top link when tension is on it. In those cases the top link lock nut is snugged.
It probably doesn't make a big difference but when the top link is near its length limit it can separate. It only happened to me once but that was enough.
Get one of these top links and do away with those darn lock nuts forever:
Agrisupply now has them for $25. You can't beat that with a stick.
i sometimes (as of late ) weld a 2" rod to my TL nuts to make them a lil easier to tighten or loosen by just knoclking with any tool.. don't need correct wrench..e tc..