Bicycle Mechanics - Threading for shimano crank arm

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View Full Version : Threading for shimano crank arm


hamr22
10-24-06, 06:44 PM
What direction is the threading for the non-drive side of a shimano ultegra crank arm on an octalink bb? Can't seem to get the crank arm off. Thanks!!


demoncyclist
10-24-06, 06:50 PM
Every crank I have ever seen is traditionally threaded.

DMF
10-24-06, 11:35 PM
GCRyder: Removal tool? You're thinking about a crank puller, which the Octalink doesn't need. It uses a self-extracting bolt turned by a 8mm hex wrench.

hamr22: Don't remove the cap with the two pin holes; it keeps the crank arm bolt captive. Just turn the crank arm bolt in the normal - counterclockwise - direction and the crank arm will back off with the bolt.


hamr22
10-25-06, 07:03 AM
Thanks...got it unstuck and removed. My friend told me that the non drive side was left hand threaded and that didn't seem right. Also, glad you told me to keep the cap on, which my moron friend also told me to remove first.

DMF
10-25-06, 10:13 AM
Most bottom brackets are reverse threaded, but not crank arms.

HillRider
10-25-06, 08:04 PM
Thanks...got it unstuck and removed. My friend told me that the non drive side was left hand threaded and that didn't seem right. Also, glad you told me to keep the cap on, which my moron friend also told me to remove first.
The pedal mounting hole on the nds crank arm is left-hand threaded.