kevsomm

i have no clue what im doing. i took the nuts off of the arms on the crank, it doesn't loosen, and now im at a loss for what to do.
if anyone could help it would rule.

sydney

Crank puller. www.parktool.com repair section is a good place to get acquainted with.The excellent Zinn maintenance book only cost about $20.

MudPie

Removing the bolts and washer (if it has them) is the first step in removing the crank arms from the bottom bracket. Depending on the type of crank arm-to-bottom bracket interface, the cranks could be pressed onto a square spindle or have a splined interface. Regardless, you'll need a "crank puller". The puller threads into the internal threads of the crank arm, and when operated, the puller essentially pushes the crank arm away from the bottom bracket using the power of a screw mechanism.

Check out: https://www.parktool.com/repair_help/FAQrCarm.shtml for how to remove square spindle type. Also, the page has a link for splined interface. Park makes excellent tools, but there are many other decent tool manufacturers out there.

supcom

Start by putting the nuts back on the crank arms. Why are you trying to remove the arms? If you are replacing the bottom bracket, you will need special tools for it as well.

sydney

But make sure thay are gresed and properly torqued.