That’s a long shot. If the adjustment is fully out (which isn’t likely) you might be able to make that work. I have about 3-4 threads exposed as a starting point. Once I get to drive around a bit I’ll makw adjuatments, but adding an other nut may or may not work depending on where the screw is living.Another option I just thought of is take the adjustment nut to the hardware store with you and find another one with the same thread pitch.
Then back at the truck, screw both nuts on the adjustment screw but not bottomed out on the gearbox. Then try to unscrew the adjustment screw using only the nuts as leverage.
I don’t know if there’s room to do that or if the adjustment screw is long enough to accept two nuts / but just a thought
I have an 86 fj60 that after ty rod and aligment is still a wondering around is that the MrLooking for recommendations on how to free the adjustment flat head screw on top. Removed the nut and the screw will not turn at all. It's like driving Mr. Toads buggy currently.