Sarge, (Case 1150B) will not lift loader past level!

OK, my 1150 loader won't lift a bucket of dirt. In fact it will barely lift the weight of the loader. Now this happened pretty much all at once. I was working a big pile of dirt that I had heaped up with the Kobelco pulling one load at a time and using it to track in the dam of a new pond. I pull into the pile low gear and raise and curl, just like a thousand other times, but this time, with a bull bucket, the thing won't lift anything!
Imagine that an old Case breaking down...That is sure...

Sarge, (Case 1150B) will not lift loader past level!

Sarge, (Case 1150B) will not lift loader past level!