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Help removing a freehub
I want to remove my freehub. I have removed the cassette, the axle and the bearings. Next I need to loosen and remove the freehub holdingbolt. I have never done this before. I understand that most freehub bolts are accessed by using a 10 mm hex wrench through the right side of the wheel. What I refer to as the front of the freehub. However, my freehub uses a 12 mm allen wrench that can only go into the freehub from the left side of the wheel, which I call the back of the freehub. With the allen wrench going into the backside of the freehub do I turn the wrench counter-clockwise or clockwise to loosen the bolt?
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Who knows? But I'd try a clockwise (as the wrench sees it) direction. Some low cost freehubs have the threaded portion one piece with the freehub body, not a separate bolt as with Shimanos. So the pedal forces would tighten up the body as you ride. Andy.
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Originally Posted by Andrew R Stewart
(Post 19151066)
Who knows? But I'd try a clockwise (as the wrench sees it) direction. Some low cost freehubs have the threaded portion one piece with the freehub body, not a separate bolt as with Shimanos. So the pedal forces would tighten up the body as you ride. Andy.
I think this is a Shimano Hub but I can find no markings on it that says it is Shimano. The Bike is a Trek (Verve model). The Cassette and all of the other components on the bike are Shimano. So I am guessing the freehub is also. |
According to the Trek website, the bike shipped with Formula FM32 hubs. Looks like they come apart like mavics with an allen wrench from either side.
Do you have a picture of the hub? |
Freehub bolts like yours are given "common" threads, which means that accessing them from the far side will be turning backwards (just like an expander plug bolt). This is really a no-brainer, because an opposite-threaded freehub would loosen itself in useage. You need to turn the wrench clockwise to remove it.
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Originally Posted by AlexCyclistRoch
(Post 19152253)
Freehub bolts like yours are given "common" threads, which means that accessing them from the far side will be turning backwards (just like an expander plug bolt). This is really a no-brainer, because an opposite-threaded freehub would loosen itself in useage. You need to turn the wrench clockwise to remove it.
That was so annoying, and I had to replace that wheel anyhow as no replacement hubs exist for that model anymore. So they can indeed be threaded on counter-intuitively, and I'm trying to find out how the FM32 screws off at the moment. |
Originally Posted by ivangobike
(Post 22396642)
I once spent an hour trying to remove a Formula freehub off a '99 Trek, and gave-up. A couple weeks later I picked the wheel up and was trying to test the ratchet mechanism (it was almost seized) and the bloody freehub was totally loose! I screwed it off with my bare hands, and it was then I discovered it was reverse-threaded.
That was so annoying, and I had to replace that wheel anyhow as no replacement hubs exist for that model anymore. So they can indeed be threaded on counter-intuitively, and I'm trying to find out how the FM32 screws off at the moment. |
[QUOTE=GrandaddyBiker;19151347]
I think this is a Shimano Hub but I can find no markings on it that says it is Shimano. The Bike is a Trek (Verve model). The Cassette and all of the other components on the bike are Shimano. So I am guessing the freehub is also. [/QUOT It is not a shimano freehub body. All of the s's I have seen require a 10mm allen wrench. |
Warning - zombie thread
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