ACZL wrote:
If the either the jacks or the frame cannot support either, then there is a BIG problem. Do believe the jacks are rated for several thousand pound capacity each.
On the Lippert Levelup, the 4 rear jacks are rated at 8K each, and the two front ones are 14K each. Plenty of headroom there. There is no problem with having wheels off the ground, except for others have mentioned, causes the trailer to wiggle a bit more. for that reason, I too, will put a board or two under the wheels to keep them grounded.
I routinely use my levelup to jack one side of my 5th off the ground to do wheel work. Of course, take the necessary precautions to ensure the trailer doesnt move (i hitch up), and dont be climbing under the trailer either.