I thought that as well, but there are other tubes that were welded completely, the one that got ripped open was like that, with no rust inside. I think that the original trailer was welded on all sides, then someone added this piece for a different jack. The biggest issue is that there are all kinds of screw holes that are in the box tube, so it gets water in it and rusts where the water settles and that seems to be the tongue area, I may have to pull that apart later, for now I just want it to be usable, then we can worry about making it perfect later....
I have been cleaning up the Hyster forklift, lots of extra **** that isn't being used, then the wiring, don't get me started, I have pulled all the floor pans up to get to things. It looks bad, probably going to rewire things, I know there will be issues if I don't. I am looking up some of the parts I need now, hopefully I can get things without too much trouble. I really want to fix the E-Brake. It looks like the engine may be rebuildable in the chassis, the bottom is wide open and I know I can jack it up high enough to work under it. The transmission looks like a nightmare if it goes bad, they call it a powershift transmission, it works perfectly so far and I don't want to jinx anything.