What can I use instead of a crank puller?
You can also pry the threads out or remove them by slowly threading the bolt, depending on the crank arm type of your bicycle. Use a bolt or a spanner tool to remove and loosen the washers.
Are crank pullers universal?
The universal design of the CWP-7 has a rotating tip pressed into each end of the tool (11.3mm and 16.3mm) so it will remove both square taper and splined (ISIS Drive™, Octalink®) crank arms.
When should I replace my bike crank?
- The threads for the pedal get stripped/damaged to the point the pedal gets undone easily.
- The mating hole for the bottom bracket fretts and is no longer a good fit.
- Cracked crank arm – if the mating hole wears, and is retightened enough times, the crank arm slides too far onto the bottom bracket.
How do you remove a self extracting crankshaft?
- Leave the retaining ring of the self-extracting systems in place in the arm. Do not remove the retaining ring.
- Begin unthreading crank bolt using hex wrench. Continue loosening until crank arm slides off spindle.
- Remove remaining crank arm.
Why does my crank arm keep coming loose?
If you’ve been repeatedly riding with a loose crank arm it could be that it’s now damaged. You could try tightening with lots of torque, grease on the square taper and threadlocker (e.g. blue Loctite, but in a pinch any kind of glue works) on the threads.