Sure Grip

Just pull the center section out, sure grip, gears and all comes out. Then remove the two caps that encapsulate the bearings and the chunk will come out. I usually mark the caps so they go back on in the same orientation. Also if you plan on running the same gears, get the backlash setting of where they are now before you disassemble. You will want to get it back as close as possible. If you plan on changing the gear set then you can skip that step.

Also make sure the shop has the caps that hold the suregrip in as they will need those to clamp their bushings in.