Ok, this guide will cover your basic Vibe maintenance. I recommend doing this after every 2000 rounds for optimal performance, but I have found that the Vibe can go 10000+ before it really needs it.
First, take your big allen wrench supplied with the marker, and unscrew the backcap.
Pull out the bolt. The bolt ring will be on the bolt when it comes out.
Wipe off the bolt and bolt ring, and regrease. Don't glob the grease on there, but use a liberal amount on the orings.
Reassembly is the opposite of takedown. Put the bolt ring back on the bolt, it doesn't matter which way you put it on. Slide the bolt back into the marker and put the backcap back on. Tighten the backcap hand-tight, just so it is snug. You are finished. Enjoy