You need this tool [Freehub cone adjustment tool](https://www.ebay.com/itm/403841135482) but be warned, there are tiny balls that will go everywhere and there are super thin shims under the cone / locknut that are needed for bearing preload.
Have you tried oiling it first? Good ole’ Phil’s tenacious oil is wonderful.
Edit: Sorry, misread it. The 10mm allen should do it, you may have to sacrifice one by giving it some persuasion.
dura-ace on
It is an allen/hex wrench and could be 12, 14, or 15mm.
Alternative_Object33 on
Big Allen key.
But a new free hub, it’s just easier.
uncle_jacob on
Sometimes you need to approach it from the nondrive side w a very big allen wrench, like in this video:
Looks like there could just be gunk in the socket where an Allen wrench would fit. Sometimes the wrench is a very tight fit. Give it a clean first and then fiddle around with the wrench some more. Looks like a 10mm to me
BigDaddy531 on
try a squared part of a socket wrench extension
MGTS on
It looks like the tool flats failed to be machined correctly. Is there anything wrong with the freehub right now?
jim2527 on
Don’t F with it. Just flush it out until the effluents clean.
jim2527 on
What model hub? That almost looks like the goofy Dura Ace specific spline
12 Comments
Likely a [Shimano HG cassette socket](https://fortnine.ca/en/park-tool-cassette-lockring-tool-fr-5-2?utm_id=70393578393&utm_campaign=1768300489&utm_source=google&utm_medium=paid&utm_content=342549430054&gad_source=1&gclid=EAIaIQobChMIkfyPrfK2iAMVZCCtBh3xWD1wEAQYCSABEgIxxPD_BwE) or something similar
I believe it’s a 6mm Allen wrench
You need this tool [Freehub cone adjustment tool](https://www.ebay.com/itm/403841135482) but be warned, there are tiny balls that will go everywhere and there are super thin shims under the cone / locknut that are needed for bearing preload.
Have you tried oiling it first? Good ole’ Phil’s tenacious oil is wonderful.
Edit: Sorry, misread it. The 10mm allen should do it, you may have to sacrifice one by giving it some persuasion.
It is an allen/hex wrench and could be 12, 14, or 15mm.
Big Allen key.
But a new free hub, it’s just easier.
Sometimes you need to approach it from the nondrive side w a very big allen wrench, like in this video:
https://youtu.be/l3AldH9N02A?feature=shared
It is a 10mm Allen
Looks like there could just be gunk in the socket where an Allen wrench would fit. Sometimes the wrench is a very tight fit. Give it a clean first and then fiddle around with the wrench some more. Looks like a 10mm to me
try a squared part of a socket wrench extension
It looks like the tool flats failed to be machined correctly. Is there anything wrong with the freehub right now?
Don’t F with it. Just flush it out until the effluents clean.
What model hub? That almost looks like the goofy Dura Ace specific spline