1) I disassembled the sleeper couch in our coach into these pieces:
d) mechanism and frame
2) Each of these fit out the door without problems. It's easier to carry the mechanism and frame with two people- not because it's heavy, but because its awkward.
3) You may want to use a strap to secure the mechanism in the frame, so the mechanism does not try to open when carrying.
4) I used a socket set for most of the disassembly work.
5) As you take the couch apart, record the order in which you do the work. Also, mark bolts/screws and where they go, so you can put them back in their correct places. Pay particular attention to see if one or more fasteners are a different size than the others; for instance, two of three bolts on an assembly are one length, and the third a different length. I took to bagging fasteners for each assembly, such as the couch arms, and labeling the bags.
6) This is very important: If you unbolt the couch from the floor, and the floor is carpeted, there is a very real chance you will not be able to find the original holes when the time comes to bolt the couch down again. If that should happen, all kinds of unhappy compromises/results can ensue. So, find a way of marking/measuring/divining/whatever it takes so that you better your chances of using the original holes.
Those are all the hints and helps I can think of at the moment.
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport