…when you convert rigid vehicle into a tractor unit. Especially it’s important to ensure welder knows how to do proper welded joints. Otherwise odd things may happen:
That looks a bit odd chassis construction…
I’ve heard about steering tag axle but steering rear bogie is new to me…
Almost properly welded
Rear axle
Unloading the trailer
Another view
Almost blocking the road
Obviously chassis wasn’t made strong enough after this originally Danish truck was converted to tractor unit after being imported to Russia. 
And no, this kind of things aren’t anything really unusual to see happen for Russian registered trucks 
Then here is a video of “professional” cold-starting of Sisu SA-150 4x4 military off-the-road lorry in -30C temperature. Definately Euro 5 engine 
http://www.youtube.com/watch?v=QlvOuJ3pzhI