Thanks for the thoughts so far, much appreciated…
So I’ve tried to work out if the dust cap is part of a self-extraction process but I’m at a loss as to how it could be? It’s a standard 8mm hex bolt with a ‘solid base’ – i.e. you can’t partially unscrew it and put another hex key ‘through’ it to a smaller ‘inner’ bolt, as such?
When I remove the dust cap nut, there’s a 22mm thread before a step (with a ten-tooth spline) to a smaller 14mm thread – are these there for some sort of extraction tool, that pulls the crank arm away?
Yes, it’s the threaded RaceFace BB. What are people’s experiences re: longevity… should I replace the bearings and go again or upgrade/change?
Any further advice/suggestions/experiences welcome… Cheers.