Hi Oliverdude,
 I have a total of four cracks, 3 on this side and 1 on the other. I can do a repair to three of them but the bottom on on the ones pictured I'd be unable to get to the back side to do a proper repair. Even then I'd be leery of putting the loader back on or using it under high pulling strain. 
 The cracks were formed, by my opinion, by repeated shock loading. I had the front frame crack where it mounts to the rear frame because a lock washer rusted and cracked out allowing flex where there should be none. The front loader had no sub frame and had been extended (10&quot;) at the mount point to the rear axle housing which was loose. It had cracked while crossing soft ground with a round bail on the loader. A wasp was removed from the fuel strainer that caused fuel starvation and bucking at a very inopportune time. All this added up to high localized torsional stresses nothing was designed to take. Needless to say I just about peed my pants when I heard the CRACK and the steering wheel came almost into my lap.

 The really sad part is I had just come back from picking up the steel I needed to make the sub-frame and new mounts for the loader. But my wife was on my case to put out the new round bale before I worked on it.