Normally undercarriage like this would rotate into the wing root/fuselage, see most airliners for details, this stops you having to rotate the wheel bogies. Without seeing your model I could not really comment further, but if you can get it to me, I will certainly look at it and advise on rigging.
There are some examples in early posts here of rigged undercarriages, and also here, if these will help you.
Cheers, Clock. 