How do you remove the engine-to-transmission driveline on a Caterpillar 615 to replace bad U-joints?

[IamBruce_Driver]

I'm working on the driveline of a Caterpillar 615 and the U-joints are completely worn out The problem is the driveline between the engine and transmission does not look like it has enough room to come out easily. From what I can see, it almost looks like the transmission may need to be moved or removed to get the shaft out.