Re: [Swiss Rail] railway rescue cranes Ep. IV - V- VI SBB
There are a couple of photos of cranes at www.railfaneurope.net under http://www.railfaneurope.net/pix/ch/SBB_CFF_FFS/work/crane/pix.html and rescue trains at http://www.railfaneurope.net/pix/ch/SBB_CFF_FFS/work/rescue/pix.html
I do not see photos of a rescue train with a crane attached.
I found this entry for Hilfszug on Wikipedia. There is a section on the SBB
In case of heavier work, the SBB might request a private company like Vanoli or Sersa come to their assistance with one of their Kirov cranes
Here is a photo of a work train, including a crane used to build bridges. It may be SBB or belong to a private company. It does seem to have SBB markings:
This might provide more information: