Bicycle Mechanics - Crank removal

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Coaster
09-20-02, 08:17 PM
I'm rebuilding the bottom bracket on my mid 80's road bike w/alloy cranks on a suare, tapered spindle. I was able to remove the left crank using an automotive puller, but with the attatched chainwheel on the r/s, can't use the same tool. Can anyone offer any advice on how to remove this side?
Also, I've tried to remove the threaded BB bearing end (two flats on outside) with no signs of budging. Would this be a right thread like the left side, or could it be a left thread? I can get a bigger wrench, but it would be nice to know that I'm pulling in the right direction!
Thanks,
Rich

pokey
09-20-02, 08:42 PM
Get a crank puller from LBS.Once the cranks are off the BB should be marked as to threading. 1.37x24 is english and the drive side is left hand thread,and the non drive is right hand thread. 36x24 is italian thead is is right hand thread both sides.You really ought to have the proper bike tools to remove the BB too. Sometimes it is easier to leave the drive side fixed cup in place as it can often be a bugger to remove.Remove the nondrive lockring and cup and bearing and pull the spindle and right bearing out through the left side.
1oldRoadie
09-20-02, 10:07 PM
To translate what Pokey said....

"Dude, you got to buy the right tools!"

Did I say that right Pokey?

MichaelW
09-20-02, 10:46 PM
A good illustrarted guide to getting the cranks and BB off can be found at

http://www.parktool.com/
Coaster
09-21-02, 07:36 AM
Thanks for the replies, I particularly like that link, MichaelW.
Rich
John E
09-21-02, 01:58 PM
Originally posted by pokey
1.37x24 is english and the drive side is left hand thread,and the non drive is right hand thread. 36x24 is italian thead is is right hand thread both sides.

Austrian, German, Swiss, and most French bikes of the 1980s use the Swiss BB thread system, 35x1 with a LH thread on the drive side. (Since 35mm = 1.378", it's basically English with 25.4 threads per inch, instead of 24.) Older French bikes use 35x1 with RH threads on both sides.