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.
Almost anything can be taken apart without proper tools, including bottom brackets. it, but it can be done. The right tool for the job(any job) makes life much easier and will lower your frustration level by leaps and bounds. If it is a Square taper, isis or octalink then no.
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.
Why won’t my bike pedals turn?
Hold the bike of the ground, slowly turn the cranks forward and backwards by hand, look to see what they might be catching on. Sometimes the front derailleur gets rotated around the seat tube and sticks out into the path of the right crank arm. Spin the rear wheel forward to make sure there is no problem with it.