Wow! Never knew CAT did that kind of machine. I have seen some others that were for the same purposes but they were all wheel steer instead of articulated. Sort of figured they were built because CAT and JD etc didn't produce models like that.
I agree on the 910 lineage. They had a 3204 CAT with a 3 speed powershift transmission behind a torque converter.
I think it would be important that the articulation joints were in good shape. Might not get that much wear compared to a wheel loader though.
It has a ram on the front end for steering. Probably steers and articulates like the 120. graders. Never seen anything like it either. Probably not heavy enough to do any heavy work.. The 120 with a 12ft board would not care a full board of damp material without sliding sideways.