How to change a crank on a bike?

how to change a crank on a bike

The main theme is how to change a crank on a bike? Pulling the crank may seem like a challenging activity, reserved only for bicycle services. However, it is no longer so complicated, just have a few simple keys and some free time. I will temporarily describe all activities. I hope that I will convince you that the exchange of a crank in a bike is neither difficult nor complicated, and the satisfaction of an impartial change will be big. This description applies to a crank with a normal support, it does not describe the crank exchange with Hollowtech II outer bearings, which you will also locate on the blog. I do now not propose using “home methods” for downloading cranks, read chisels and hammers. This will cease at excellent with a scratched crank, and in the worst case with an injury to the equipment.

To pull the crank we need:
1. Of course, the crank:)
2. Allen keys to unscrew the bolt securing the crank to the backside bracket
3. Crank puller
4. Depending on the puller, ring/socket wrench


We start the exchange:

1. It is quality to unscrew the pedals first. It will be simpler to do now – than to battle them by preserving the crank fingers twisted in your hand.
2. Unscrew the bolt that secures the crank to the bottom bracket (with an Allen key or other relying on the crank).
3. We crank the essential aspect of the puller into the crank. It must be screwed in well, but sensitively – do not tighten it completely.
4. Tighten the “pulling pin” into the important factor of the puller. This operation is very simple. It should be screwed until we feel a clear resistance. Then we use the key and with some strength, we strive to take away the crank. After a few turns (usually 2-3) there will be a characteristic sound – “tick” and the crank will come off by itself.

Learn more about best cycling chain- What is the chain suck and what causes it?

Putting the crank

The case is less complicated than the picture. We smooth the crank thoroughly. Then we lubricate the factors that require it. We attach the crank fingers accordingly. You should attempt to do it as challenging as viable so that there will be much less work later. Now we tighten the bolt securing the crank to the axle. We do it with an outstanding deal of electricity due to the fact a poorly tightened screw can purpose loosening in the future. Unfortunately, they will no longer be capable to be removed, and a badly connected bicycle crank will not allow placing the gears well. After inserting on the crank – it’s well worth checking if the whole thing works well.

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