To my knowledge, size 8 or 10 allen wrench. But I’m almost sure theres mutliple standards?
jim2527 on
If it’s a Shimsno it’s 10mm. While it technically is possible to replace the bearings it’s not easily done. Just flush it out with oil until it drains out clean and be done with it.
ZeisHauten on
My freehub can be pulled by hand to access the bearings, but the bearings have a lockring to keep them in place. Nothing a sharp tipped pliers can remove. But your hub may be built different than mine.
Able-Night-7052 on
You have to unscrew it with an allen key, this is very tight. Bearings are ball bearing, you need the right size. Better buying a new hub.
SolemnDaniel on
As others have said, Shimano tends to be 10mm. Of course there are other sizes and I’ve seen up to 13 & 12mm. I’ve also read on some forums that a 3/8 socket extension can also work if you’re lucky.
Free hub bodies can sometimes be torqued super high, so if whatever you use doesn’t fit right, you risk rounding it out. If possible take your wheel to an autoparts or home department store and see what size sockets/Allen keys/bits they have that fit and just buy the size you need.
6 Comments
To my knowledge, size 8 or 10 allen wrench. But I’m almost sure theres mutliple standards?
If it’s a Shimsno it’s 10mm. While it technically is possible to replace the bearings it’s not easily done. Just flush it out with oil until it drains out clean and be done with it.
My freehub can be pulled by hand to access the bearings, but the bearings have a lockring to keep them in place. Nothing a sharp tipped pliers can remove. But your hub may be built different than mine.
You have to unscrew it with an allen key, this is very tight. Bearings are ball bearing, you need the right size. Better buying a new hub.
As others have said, Shimano tends to be 10mm. Of course there are other sizes and I’ve seen up to 13 & 12mm. I’ve also read on some forums that a 3/8 socket extension can also work if you’re lucky.
Free hub bodies can sometimes be torqued super high, so if whatever you use doesn’t fit right, you risk rounding it out. If possible take your wheel to an autoparts or home department store and see what size sockets/Allen keys/bits they have that fit and just buy the size you need.
Its an allen key and its bloody tight. Godspeed