Hollowtech BB tool

father_jack

What BB / crankarm tool do I need to remove these two things?

I have BB tools for square taper but not the same type, the middle bit just goes all the way through and doesn't rest on the BB to push off crankarm.

http://postimg.org/image/sp8dnfelj/

keef66

Looks like Shimano Octalink. As you've found you need a little insert for your crank tool; mine came with one.

http://www.chainreactioncycles.com/shimano-octalink-chainset-plug-tool/rp-prod5728

Have a read of

http://www.parktool.com/blog/repair-help/crank-removal-installation-isis-drive-or-octalink

Although they obv recommend buying their Octalink specific tool, they also describe the Octalink self extracting cranks. Did yours have a little cap over the retaining bolt? If so, replace the bolt, screw the cap back on, then undo the bolt again. As it presses on the underside of the cap it will pull off the crank....

The Rookie

To clarify that isn'y Hollowtech (which is a means of making hollow canks arms) nor Hollowtech II which is external bearing bottom brackets.

keef66

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19682879#p19682879]The Rookie[/url] wrote:

To clarify that isn'y Hollowtech (which is a means of making hollow canks arms) nor Hollowtech II which is external bearing bottom brackets.

Since it says Hollowtech on the crank arm and the large S looks to be the start of SHIMANO, I suspect it is the former.

But it isn't a Hollowtech BB, it's Octalink.