The Putzmeister MX 32 is fully rigged and ready to animate.
To animate, select and move putz_helper_arm02 and/or putz_helper_arm04
the included animation starts with the unit being folded up then stretching out about 75% off it's full length.
This model is ready to use, just put it into your scene

The additional file formats, 3DS, FBX and OBJ are not rigged has no animation helpers and are not animated
Materials may also appear different in the 3ds, fbx and obj formats