How to remove a crank arm from your bicycle square taper

Quick overview of what tools are required (crank puller, ~14mm socket, quarter) and how to use them to remove a square taper crank arm from your bottom bracket of your bicycle. Thanks for watching!

Category:

Howto & Style

Tags:

• crank
• removal
• arm
• bicycle
• maintenance
• puller
• bolt
• thebiketube

[trimmytrab]

I have a Single Speed MTB with RPM Cranks on there at mo, that I want to change. The principle is exactly the same?

[thebiketube]

@trimmytrab Depends on what kind of bottom bracket you have. If it is a more current bb it might be splined or an external bb which would require different tools. If it is a square taper bb like the one in the video, then yes, same principle.

[Vista0009]

Is it possible to take off the crank arm without the puller?

[MrBackalleybikes]

@Vista0009 If the threads are smooshed, there is a thread chasing tool. It's an expensive tool but your local bike shop should have one, and should be able to take care of it.

If all the threads are totally stripped, you'll probably have to use brute force and some heavy duty tools. BEWARE, the brute force method usually results in one or more of the following: destroyed crank, damaged bottom bracket, damaged bike frame, ringing ears, lots of swearing, and blood.

[arushandapushand]

is it necessary to use a special crank puller or is there another way?

[KarlisKristaps]

That`s one of the reasons I like repairing my car more than I like repairing my bike. You need a special tool for everything. Either you need a special bike shop or you need to be Batman. "I`ll just take my special crank puller I allways carry with me."

[maddog0610]

Nice Park Tool crank puller!

[Sero214]

your mother needs a puller

[1995mrfantastic]

What can you use if you do not have a crank puller ?

[TeacherPhilEnglish]

Good video thanks

[JulianSahagun16]

I actually trying to find out how to take off a stripped stem screw u know the ones inside the stem

[thinkpad411]

And lol you're not a pussy if you can't get those nuts loosened. Sometimes they're seized on there, or the stupid bolt cap will break while you're trying to take it off, so all the material from the cap is stuck in there and you can't get the socket over the bolt head deep enough.

[thinkpad411]

@Vista0009 I've done it before, but i'm pretty sure the only time that is possible is with a newer bike, where the crank connecting point isn't fused onto the main shaft itself from all the years of that constant radial load.

Was wondering if there's a way to get them off without that puller, it's impossible to get any decent leverage on the crank itself. Would heat or penetrating fluid work for those ones that have never had the crank tooken off of them?

[Degenskonto]

Fuuuuuu god damn special tools!