I felt like if somebody had been watching me watch that video - they would have thought I was a dog - with my head cocked off to the left
No worries though. Saw that you have locking hubs on the front of your truck. As I understand it, those are mileage savers and will help on "wear and tear" on your front axle.
I saw the spot earlier: Rusty spot and 4 holes in the frame. I think I saw some mention that those are the mounting holes for the crane.
I have a few books for Hiab cranes. I have nothing for the Palfinger. I did rummage around on the Web, but so far I haven't found PDFs. It may be that if you talk nice and mention your concern for Safety
- they might help you find a PDF. The right way to mount it could be important as well as a load chart so you don't overload the crane. Phone call is going to be better. Most often, I get ignored with an email asking for technical for an elderly crane...
On the picture, the 4 bolts have "hooks" that might
fit the 4 holes in your frame. My concern is that most "kunckle boom" cranes have a piece that sits on top of the frame. The outriggers generally slide in under the frame, then a set of long bolts connect the two pieces together. I could be completely wrong, but I just don't think that the "J-Bolts" (in the picture of the crane in the bed) are the factory bolts. I could be wrong. If all four are perfectly formed, I would be really wrong (and that will be okay!).
Finding the Installation Guide or some sort of technical manual could be a real benefit.