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Old 04-23-07, 02:26 PM   #1
ashsimmonds
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crank / bearing removal on a Giant CRX-4

aloha, how do you get this bearing out (pics attached hopefully...)
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Old 04-23-07, 05:48 PM   #2
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Hi! I believe we're looking at a cartridge bottom bracket, which is a one-piece sealed unit and only needs to come out if you're going to replace it. Here are instructions, diagrams, and pictures.

http://www.parktool.com/repair/readhowto.asp?id=94
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Old 04-24-07, 10:40 PM   #3
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*sigh* this looks like such a pain in the arse and seems like i need to run a frickin tooling factory to do all this. it's just a bloody bike!

danke.
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Old 04-25-07, 09:56 PM   #4
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Quote:
Originally Posted by ashsimmonds
*sigh* this looks like such a pain in the arse and seems like i need to run a frickin tooling factory to do all this. it's just a bloody bike!

danke.
Yeah, tell me about it - I have three bottom bracket tools.
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Old 04-28-07, 10:01 PM   #5
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ok, i got a tool and took out the thing in the pics, now how do you get the crank shaft/bearings out?
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Old 04-29-07, 08:18 AM   #6
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Quote:
Originally Posted by ashsimmonds
ok, i got a tool and took out the thing in the pics, now how do you get the crank shaft/bearings out?
You don't. It's a sealed cartridge bearing bottom bracket and not rebuildable. You use them until the bearings get rough (which will take a long time) then replace the entire assembly.

BTW, why did you want to remove it in the first place?
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Old 04-29-07, 03:41 PM   #7
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ok, i got a tool and took out the thing in the pics, now how do you get the crank shaft/bearings out?
You remove both sides with the same tool. One side has just the ring, and the other side will take the whole cartridge out. Remember that the drive side is probably reverse threaded, meaning you'll turn it clockwise to loosen it. As mentioned before, you only need to remove these cartridges when you want to replace them, or if there's a creaking problem that you need to resolve by greasing the threads and re-installing the cartridge. As Hillrider says, the bearings and internals of the cartridge aren't serviceable.
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