This is what happened to mine.
Shame on me for not washing it off, but it cost 60.00 in Kubota Hyd. Fluid to even get it on the trailer. And that was only two gallons
The housing crack was due to an internal bearing that split in half. This bearing was in the center of the bull gear at the center of the rear end assembly. It split through the top crown on the gothic arch, internally, on the outer race. Which caused the outer race to separate and thus, the axle would wobble.
I saw all the parts, and that bearing was split for a long time, and I just bought this Brand NEW.
Fortunately, It was still under warranty, otherwise it would cost a small fortune to fix. They ended up replacing everything internally except the left axle, plus replacing the two housings on the right. WHEW!!!
It was really smooth driving after the fix
