I’ve just been contacted by these guys who run a store selling CAD block for few euros: https://custom3d.com/collections/cranes/ They have several blocks that you could find useful, including some 3D Liebherr blocks. Enjoy!
Hello, Here you can download a DWG block of the Repower MM92. It has been made by Nuno França, a friend working in the renewable business. Repower MM92 AutoCAD DWG block