the above is the best I have seen just thought you would like to see further talk about the subject and see what others have done.
If you have the tools and know how I would do as above.
I wanted to do that but have little welding skills so I ended up making a fold down table that rides in the back and can fold out on ither side. depending on which side food prep was being done on. I have no galley.
Others came up with other ideas of how to make one from parts already made.
see
http://tnttt.com/viewtopic.php?t=30874
Here you will find more about the above unit and what others thought.
when I researched it I looked at swing out tire mouints for 4x4 units.
I found it to heavy for a wood mount and to time consuming to unbolt from a wood frame to swing out. If you do it do it in metel as seen above.
I get exsited every time I see them.
the 4th picture down I found to be the key to making sure that it does not fall down when opening.
My swing out wood table is supported by a chain that is attached at the top side of the trailer and it still needs that extra support seen in picture 4.
Ron