bontranger duster elite free hub bearings

mtbsteveo

Hello,i am new to this site,i hope somebody out there can help.I need to inspect/change the wheel bearings in my bontranger duster elite free hub.I have always had shimano hubs,so these are new to me. Im not sure how to get the bearings out,so any help/advice would be greatfully recieved.The bike is a trek slash 7,2015 model.
Thanks in advance
Steve