I'm afraid that I have never played with a Truss Rod banjo, so don't have much advice there.
In general, if you take the strings off a banjo, you can easily dismantle it with a socket set, a couple of spanners and a screwdriver. Some people then advocate a hacksaw and a can of petrol, but I think that goes just a bit to far!;¬)
If you do decide to dismantle, make sure you lay out the parts safely, so you can put them back in the correct position.
Quack.