After a thorough clean and (over) oiling with WD40, my Shimano 105 FH-5800 freehub stopped engaging. Sounds like a common fail: I had previously thought that more oil = better. Live and learn!
Bike is just over 10 years old but in good condition otherwise. I don't know if:
- This can be dismantled, cleaned out, re-greased and put back
- If the bit with the pawls in it can be replaced?
- Or if the whole freehub should be replaced and wheel rebuilt around it?
- Any other options?
I've looked at countless guides online to do with all three, but I just can't work out what applies to me and my kit and what doesn't.
I'm also not sure what I'd attempt myself and what I'd need a shop for. I certainly wouldn't attempt (3), but would considering (1) and (2) with solid advice. I would need to buy the Shimano tool and a chain whip first though - until this happened I'd never heard of freehub, cassette, pawl or Sheldon Brown for that matter - I'm getting a good education here!
Here's the back wheel when going wrong: https://photos.app.goo.gl/8p3vnYAyxyndNtoz5
(apologies for the poor backing track 🤣)
Update: https://photos.app.goo.gl/oBSpGwfBUpxfyxDJA (additional photo of hub model)
Happy to send more images, but as far as I'm aware, unless I get the tools I can't currently get the cassette off to see more.