drop down bed problem.

Does anyone owning a niesmann+bischoff motorhome ever experienced the drop down bed collapsing. last night on site this is exactly what happened, thanks to the advice of thye wardens and our breakdown service who responded within the hour the problem was solved.There was no way the van could  have been driven otherwise.The bolt at the side of the van had become loose dropping the bed  down on to the steering wheel what a nightmare thankfully solved