An old style freehub body has bearings like a front wheel and the freewheel screws onto the hub shell. The freehub uses a splined cylinder to hold the cassette cogs. The freehub concept answers several drawbacks encountered with the freewheel design: Freewheels are threaded onto an axle hub, using conventional right- hand threads.The freehub body itself is held on to the end of the hub shell with a hollow Allen bolt that the axle passes through. This article will show you how to fix a bicycle freehub mechanism that is skipping. If your cassette cluster is loose or gets stiff you may need to replace your freehub body. The freehub is the ratcheting mechanism attached to the rear hub of most modern derailleur bike hubs. A freehub a common hub type for bicycles that uses stacks of sprockets cassettes the freewheel mechanism is contained within the hub. So I made this one out of an old eehub replacement. Unscrew freehub body Slide a 10mm hexagonal key into the hub from the right- hand side.
The cassette cogs have no moving parts. As the bicycle rider pedals the freewheel is continuously kept tight, as chain torque is in the right- hand fore you start, you need to make sure you have the correct freehub body so consult your local bike shop before you buy.
Once the freehub body is removed bolt , clean the hub surface grease all the way around the bolt’ s threads before re- installing. Remove bicycle freehub body. It was cheap and easy to make.
This is my homemade freehub body disassembly tool. Gently thread the new freehub body onto the hub splines and thread the bolt back into the hub. Hold non- drive side cone with cone wrench. To undo it get a 10mm Allen key, put it into the end of the freehub turn anticlockwise.
How to replace a Shimano freehub. If your hub’ s never been apart this may take a bit of heft. This Instructional video will show you how to do the easy task of removing a free hub on a bike wheel. Remove set screw from side of drive side locknut.
Shimano used to make a tool for this ( Shimano Cassette Hub Race Remover TL- FH40), but they are hard to find now. The freehub body holds cartridge bearings.
I show how to remove the freehub body lubricate it, flush it out with solvent then install it back onto the wheel. This is used to remove the cup/ cone from a Shimano freehub body. You need to remove the freewheel to service the hub bearing. Then you can loosen the freehub by turning the wheel counter- clockwise.
Note orientation of pawls as you remove freehub.