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> Transmission > Cassette replacement
Ce tutorial aims to help you replace the cassette on your bike, equipped with a disc brake.
Difficulty :
Temps necessary:
15 minutes
Necessary material :
The bicycle cassette is an integral component of the bicycle. The latter contributes to the proper functioning of the bike. Wearing part, it is necessary to replace it.
Located on the rear wheel hub, the cassette body contributes to the movement of the bike. The chain operatedar the crankset in turn drives the cassette sprockets and the bike moves forward. The circular movement of the wheel should not loosen the cassette clamp ring.
Removing a cassette requires having the right tools.
Remember to consult our guide on bicycle cassette.
The first essential step before you start dismantling the cassette is to invest in a few specific tools:
- the cassette remover: essential tool for assembling and disassembling a cassette. Not all available models are valid. Some are damaged from the first uses. This is why you should be careful when purchasing this tool. If you want to make the right choice, it is essential to consider the material of this tool. The best solution is to choose a cassette remover made of steel, a material is renowned for its very good resistance and solidity.
- the chain whip: very simple to use, it allows you to work on a 5 to 12 speed transmission. Its ergonomic handle provides excellent grip. The chain whip, an essential tool for anyone who wants to change their cassette themselves. Note that it is also one of the rare tools in cycling that is universal. In the case of a cassette: the whip chain wraps around the cassette and keeps it fixed par through its handle. The chain whip is used in conjunction with a cassette remover.
1) Start par remove the rear wheel - refer to our tutorial: Installation and removal of a rear bicycle wheel
2) Unscrew the road axle. Remove the axle. Replace the spring and nut and set aside
3) Insert the key guide into the axle slot.
4) The rotation required for loosening is in the direction of the freewheel.
5) The cassette must be blocked in order to be able to loosen the nut
6) Here we are going to use the chain whip. Place the whip around the cassette to block rotation when removing the locknut
7) Loosen the cassette
8) Take the used cassette out of the wheel hub
9) Take advantage of the disassembly to clean the spoke protector.
11) Clean the rear wheel hub thoroughly.
11) On the new cassette, remove the plastic protection, by pressing under the tabs. Please note: some gears may be free.
11) Locate the key (i.e. the widest space between two grooves).
11) Position the spoke protector.
11) Locate the cassette key and insert the cassette. Before installing the new cassette, apply a coat of grease to the freehub body.
11) The free gears are inserted from largest to smallest.
11) Bring the nut closer to the cassette.
11) Insert the cassette remover and tighten the nut
11) Tightening is done in the direction of the wheel locking. The use of the whisk is not necessary
11) Replace the wheel axle that you have previously greased.
11) Tighten firmly but not all the way
11) Reinstall the wheel (tutorial: Installation and removal of a rear bicycle wheel)
11) All that remains is to make a few adjustments.
11) Check that the gears shift correctly and check the condition of the chain.
After refitting the rear wheel, it is recommended to spin the wheel by pedaling and changing gears to check that everything is working properly.
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