Been trying for hours undoing this bb (clockwise). Is it just extremely stuck or a weird model with an extra step (because of shifter) ?
by n00b908
Been trying for hours undoing this bb (clockwise). Is it just extremely stuck or a weird model with an extra step (because of shifter) ?
by n00b908
19 Comments
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What is that metal thing?
Looks like a situation for an extender. I have an old hollow tent pole for that very purpose. Use after liberally dousing the threads you can see with WD-40. May need to let the solvent work overnight.
Did you get the LH cup out first? With the LH cup removed, you can spray some penetrating oil through the BB. Leave the bike on its side for a while to help it soak in. Also, add some leverage to your wrench and a little bit of heat will also help. If you have a bench vice you can secure the tool with the vice and turn the frame like this. [https://www.instagram.com/p/BeBOG49B3ps/](https://www.instagram.com/p/BeBOG49B3ps/)
Clockwise is correct. Opposite to petals and pedals are “back off”
Taking the frame out of the stand could help
Pour boiling water on the bottom bracket shell/frame, has saved me multiple times now with stuck bottom brackets
You can also reinstall the wheels, put the bike on the ground and bolt the tool in place so it doesn’t slip, then really put your weight on it, or get a longer wrench for more leverage
https://preview.redd.it/m16541yj07ae1.png?width=928&format=png&auto=webp&s=5bd82fab9a485824ff9fa0c9ded8d50b5a675e48
First and foremost though try the boiling water, it really really does work
~~To the best of my knowledge, Specialized didn’t do anything strange which would cause the BB to be locked into the shell by the FD. If you’re worried about it, by all means, take the FD off, but usually they’re just mounted on a band around the seat tube.~~ Take the FD off is what I learned today!
Try boiling water and/or penetrating oil first before going to more energetic methods. You can also tap the BB tool with a mallet while trying to loosen it and sometimes that helps knock things loose.
What comes next is last resort and in situations where you don’t want to go to a shop to let them deal with it.
What I’ve had to do in the past for extremely stuck BBs is highly ill advised, but it does work. I’ll reach for an air impact gun and hit it with that. Works a treat on stubborn pedals and corroded in BBs. You just need to be comfortable with the possibility that whatever you’re working on will get broken in the process because this is NOT a good method.
Turning in the correct direction? Clockwise to loosen, I believe…
Unscrew the cable guide because it could be catching on that a bit. Take out the left side cup, snug everything up on the drive side and use a cheater bar.
That side is reverse threaded. Tightens counterclockwise and loosens clockwise.
That’s a key for cogs
On BSA/english threaded, which I assume it is, both BB cups unthread towards the back of the bike, counter-clockwise for drive side and clockwise for non drive side. Going clockwise on drive side would tighten it.
With the tool bolted on very tightly, and the the wrench on the tool preload slightly with your finger and smash the reach with a rubber mallet
I had the same problem. Dropped it off at a shop and let them deal with it for $20.
What are you using to turn it?
Specalized hard rock?
I had this problem last summer. I would never recommend doing this but an impact gun had it out in about .3 seconds