Bicycle Mechanics - Bottom Bracket removal?
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05-11-06, 07:16 PM
I'm just getting back on the old bike for the first time in years, and the bottom bracket is creaking really bad. I have taken the crank arm off on the gear side. I am unable to remove the other arm and bottom bracket assembly. It is a late 90's trek 8000. Any one able to shed some light on my dilema??
05-11-06, 07:26 PM
What kind of bottom bracket? Are you using a crank puller?
05-12-06, 07:11 AM
Is it a square-taper bb spindle? If so, make sure you don't have a washer left in the crankarm. If you use the extractor with the washer in there, it sure isn't going to take the crankarm off. A quick glance to make sure that you're seeing a silver outer square (crank) and a black inner square (bb spindle) will confirm. If you see no squares, then the washer is in the way.
05-12-06, 07:52 AM
Is it seeming actually stuck, or like you don't have the right tool? Have you tried good ol' fassioned leverage ("cheater pipe")?
05-12-06, 08:55 AM
the 1990s Trek 8000 came with Shimano Deore DX/LX components.
it's a square-taper BB. Use a crank puller shown below (TL-FC10.jpg) to remove the other crank.
remove the BB cups using a BB tool (BBT-2.jpg). remember that the drive side has a left-hand thread.
ParkTool (http://www.parktool.com/repair/readhowto.asp?id=94) has the complete drill on bottotm bracket maintenance.
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