a good machine shop shouldn't need instructions...if they do, take it somewhere else.

caveat; most places will not guarantee a job if the customer brings in their own parts. with this in mind, be sure you find someone who knows what they're doing for you don't want to have to do this all over again. i'd have a new hub handy just in case your old one turns out to be bad, which you won't know until they press off the outer inner bearing race.