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Discussion Starter · #1 ·
I'm fairly new to biking and definately new to doing most of the mechanic work myself but I am thinking about swapping out my stock crank for a newer better one. I am definately an able bodied mechanic (I build um, "other" two wheeled machines) so the concept is not lost on me. I understand pretty well how to install, but my question is on the uninstallation of the old crank. It is an internal bottom bracket (Truvativ Isoflow to be specific). Do I need something like a gear puller, or pulley puller to get the old one out? Or can I caveman hammer it out? Once I have the new crank in, is there much to tuning? Thanks a ton.
 

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Don't Tread on Me
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A few special tools will help. LBS should be able to sell you the tools you need for a minimal price. Crank arm puller is required and I recommend not scrimping on the quality as you will use this tool frequently if you plan on doing your own work.
 

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Never trust a fart
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Here are the following tools you are going to need.

IIRC 8mm allen for the crank arm bolts

Crank arm puller for ISIS - I prefer the Park Tools version
http://www.parktool.com/product/crank-puller-for-splined-cranks

Bottom bracket tool. It should be one of the following 2. One has an 8 notch ring, the other is a internal splined. Most of the ISIS BB's that I have removed/replaced require the 2nd BB tool that I linked.

http://www.parktool.com/product/bottom-bracket-tool-1

http://www.parktool.com/product/bottom-bracket-tool-3

If you have any questions, your LBS can help or post your questions here with pictures for clarification.
 

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frdfandc said:
Here are the following tools you are going to need.

IIRC 8mm allen for the crank arm bolts

Crank arm puller for ISIS - I prefer the Park Tools version
http://www.parktool.com/product/crank-puller-for-splined-cranks

Bottom bracket tool. It should be one of the following 2. One has an 8 notch ring, the other is a internal splined. Most of the ISIS BB's that I have removed/replaced require the 2nd BB tool that I linked.

http://www.parktool.com/product/bottom-bracket-tool-1

http://www.parktool.com/product/bottom-bracket-tool-3

If you have any questions, your LBS can help or post your questions here with pictures for clarification.
The Park Tool site also has repair/service instructions.

AK, the proper tools are pretty much required. I would visit the LBS to have the old crank removed. Would be quick and much cheaper than buying tools you would never use again.
 
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