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Discussion Starter · #1 ·
i have a 2010 RH expert that im transferring to 1x9 by removing the granny and outer ring. however i hit a little problem, i got the big ring off, which loosened the second ring, however i see im going to have to take the crank arm off in order to remove the granny ring, but i cant get the crank arm off, i have undone the 2 8mm bolts that hold the arms on and i can see straight thru the BB but i cant get the arms to come out so i can take the granny ring off.

any help PLEASE.
 

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Discussion Starter · #3 ·
think theres anyway i can knock it out with the poormans tools???
i thought about getting a hammer and tapping on the arms at the base but wasnt sure if that was a good idea
 

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You need to insert an 8mm allen on the non-drive side of the bike. Rotate the allen COUNTER CLOCKWISE (towards the front of the bike) while holding the crank arm. This should loosen the crank arm - it's a self extracting arm so it will start to separate itself from the spline. Once the non-drive side is out, the drive side will just slide out.

I haven't ever taken apart the chainrings so you're on your own at that point.
 

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Never trust a fart
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Its a billion times easier to go purchase the correct tool. Banging on the crank arm with a hammer just doesn't cut it.

Park Tool makes 2 different pullers. The blue crank arm puller (like the one shown above) is for square taper cranks. There is a black one for Isis/Octalink which is what you have.
 

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Discussion Starter · #6 ·
i took out the drive side bolt first, should i have done it the other way around????

if so which one should i put back in first?
 

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Nachomc is describing self extracting crankarms which you don't have so disregard his post.

It doesn't matter about the bolts. You only need to take out the drive side bolt and use a crank arm puller. Using a hammer will damage your chainrings or crank arm. Use the right tool or go to the LBS.
 

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Discussion Starter · #8 ·

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Drinking the Slick_Juice
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good thing you bought the tool, the first time I removed my very first crank arm was with a hammer.....not a good idea
 

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1+ for crank puller.

It's cheap, it's way easier and faster then using a hammer, and you won't damage your crank shaft.
 
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