Hello,

One of my bikes has an eccentric bottom bracket with a Gates belt drive and a Shimano Alfine 11 IGH.

For a few days now, I've experienced some creaking noise when pushing on the right pedal. Even removing the right pedal, cleaning it, greasing it, and putting it back on didn't solve the issue.

So I figure I should do the same thing with the chainring, but I don't know how to do it: After using a 10mm Allen key followed by an 8mm Allen key, I could successively remove the two screws on the left side (shown as "1" on the picture), but then, I'm left with empty space where a standard bottom bracket axle lives.

Should I use some specific spanner to undo the rings shown at "2"?

Thank you.