Bicycle Mechanics - How do you remove an FSA MegoEXO bottom bracket?
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08-17-08, 07:16 PM
I've never removed a bottom bracket before but this one needs to come off. I've got both the 8mm allen wrench and the special BB tool.
Do I need to remove the chain rings first? I can't seem to get the 8mm bolt out, its on extremely well or perhaps I'm doing it wrong. Any help would be greatly appreciated. Thanks :)
08-17-08, 07:36 PM
08-17-08, 07:40 PM
There should be two pinch bolts on the non-drive crank arm that need to be loosened. Then there's a screw where the standard crank arm bolt would be, but on an outboard bearing setup this screw is just used to draw the non-drive side arm onto the BB spindle. Remove this screw and the non-drive side arm should slide off. Then you can use a rubber mallet to hit the spindle and drive the drive-side arm out of the bearings.
08-17-08, 07:50 PM
its a solid carbon crank with no pinch bolts.
08-17-08, 08:06 PM
Learned something new...
Apparently, that 8mm hex recess screw is Loctited in place. Sounds like you just need more torque. Read this for more info: http://mtb.fullspeedahead.com/downloadfly.aspx?download=downloads/Install_MegaExoCarbon.pdf
08-17-08, 08:15 PM
Install the M27 QR nut and washer in to the L. arm (Use FSA tool no. EE023.)
To remove L. crank arm, simply unscrew the M18 fixing screw.
08-17-08, 08:51 PM
Its on very very tight. Me (170) and another guy (240) held the crank as I tried to turn the bolt. I'm afraid to lock it down in a vice or any similar device because its aluminum and very thin and frail. I'm going to try using a breaker bar while another person holds down the other crank arm down ...
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