This 1990 426 cat I picked up only has 2200 hours on it but the backhoe is all beat up for some reason. Not sure what they were doing to it or if it is just because armatures were running it but it has had some previous repairs and currently has a small crack in the bottom cast section of the boom. I have welded plenty of cracks up in my 1960 case with a fabricated boom but this boom has a cast section at the bottom where the main pin goes through the bottom and has a small crack in one of the oval holes where the hydraulic lines are accessed. Is this what they call ductile iron? Can I weld it the same as my old fabricated one? I normally would 1.)Clean it off 2.) V it out 3.) Root pass with 6010 4.) Cover passes with 7018
I will try to post a pic but I can’t figure out how to get them to be the right size and to forum won’t let them post.
I will try to post a pic but I can’t figure out how to get them to be the right size and to forum won’t let them post.