When I purchased my 17-56-2 OB 2 months ago, about 2 weeks after Jayco posted to me a special socked so that I can change my wheels without having to take the Hub Cover off.. If you ckeck the standard wheel brack that is included can not be insterted without removing the 3 allen bolts, this socked save you having to do that and changing your flat Tyre is much easier..
That sound handy. Its a right royal pain to remove the allen screws (or what used to be rusted flat head screws until the last service) every time I want to check the wheel nuts are tight....
They'll give you a manual pack. Mine included the users handbook (generic for all models) user manuals (electric brakes, fridge, m/wave, air con, stove) gas and electric installation certificiates, cleaners, and advertising materials (included an advert for Jeep advertising models which were longer made, big 4 holiday park guide from 2 years prior etc), and a docket of recorded weights when placed on the scales. Some dealers may throw in a few extras. (we had to specifically ask for the outdated dvd, and still haven't looked at it)
The jack will be installed in the front boot. Jockey wheel should be installed on the a-frame holding it up
Unless lucky, you will not get hoses or power leads etc.
Just check all your ordered inclusions are there, and like Big Gee says, test everything you can.
Have fun