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Mechanically challenged girl wants to fix her bottom bracket(9 posts)

Mechanically challenged girl wants to fix her bottom bracketKrissy
Jan 17, 2002 2:27 PM
I have a carbon Trek 5500 with Dura Ace components. I need to change the bottom bracket. I would like to do the work myself and I need some advice on what tools I will need and basically a step by step how to. Anyone know of a good resource that I can go to? Thanks so much!
try park tool . . .mja
Jan 17, 2002 3:00 PM
Two good books...cory
Jan 17, 2002 3:01 PM
One is by Lennard Zinn, called something like Zinn and the Art of Bicycle Maintenance (I have it, but not in front of me). Another is Bicycling Magazine's Complete Guide to Bicycle Repair. They're $20-$25 apiece and will talk you through the whole job. Most people seem to prefer Zinn's.
You can do the job, by the way. Just go step by step and think ahead a little.
re: Mechanically challenged girl wants to fix her bottom bracketmackgoo
Jan 17, 2002 10:26 PM
Get yourself a good park work stand along with the required bottom bracket tool as well as the required crank puller.
Crank Puller Not RequiredTJeanloz
Jan 18, 2002 10:00 AM
Dura-Ace cranks (and Ultegra) are self extracting. The only tool you need to remove them is an 8mm allen wrench.
Crank Puller Not RequiredTSlothrop
Jan 18, 2002 1:28 PM
Is it the allen bolt itself on Ultegra and DA cranks that does the work of extracting the cranks, or integral to the actual crank arms?
I'm just wondering if you can put DA bolts on 105 to make them self extracting? I think I actually know the answer to this in advance because shimano are never that kind.
It's the bolts,TJeanloz
Jan 18, 2002 5:14 PM
You can get self extracting bolts for ~$10. They fit any splined crank and make your life a lot easier if you remove your cranks often.
The trick with the self-extracting cranks is proper installationnee Spoke Wrench
Jan 18, 2002 5:54 PM
I'm not a real big fan of the self extracting cranks because I've seen too many that have been boogered.

After you remove the crank, completely remove the extracting ring, bolt and washer from the crank. This is an importnt step that lots of people overlook.

When you reinstall the crank, first make sure the splines are aligned. Install the washer and torque the bolt to 30 ft.lbs. Finally, screw the extracting ring back into place.
The trick to anything working well is correct installation (nm)TJeanloz
Jan 20, 2002 8:15 AM