Bontrager 15mm QR Hub Service

BlueAdvocate

Ok, I think I'm being stupid but can you service these things?
Have a Bontrager Select Hub on my Trek Remedy and it feels a bit rough as I turn it.
However there is no obvious place for a spanner etc; to get access to the bearings.

Found this thread but I guess I need to get pics

http://www.bikeradar.com/forums/viewtopic.php?p=16751256

I guess it's a trip to my nearest Trek dealer but thought I would quickly ask.