I just successfully converted my drivetrain to a Shimano Alfine hub.
Since installing it's never been truly golden; there've been some late shifts, grinding gears, etc. Part of this could be my fault as I was a newbie at installing so I think I lined up the yellow dots in gear 5 instead of gear 4 and my shifting cable sticks a little.
Anyway, I was riding in some snowy conditions yesterday and pedaling up a hill, I lost all gearing except what felt like 2nd gear. I was pedaling hard. When I got home, I noticed a component had failed in keeping the shifting cable in tension so I stripped the parts off and re-situated them. But there's another problem...
I noticed a rubber gasket of some sort had been shredded. It's from an inner portion of the gearing (just past the first stop washer working from the right/drive side). But I don't know if it's just a dust cover or something more important. I removed the torn bits and put everything back together and it seems to move fine (haven't tried shifting yet). I just need to know any expert opinion's on what that rubber gasket was.
Is the driver plate rubber? I can't take off the lock nut and stop washer to see better because I don't have cone wrenches. (I know, I know, I'm a poor excuse for a biker) From what I can tell, it may just be the right dust cover B, but I didn't know if anyone who'd stripped the alfine could tell better.
Any ideas out there? Thanks in advance.
TL;DR My alfine dropped it's gears, I put it back together but noticed a ripped inner rubber gasket. Is it necessary/what is it?