Arom

I stripped my pedal threads in my crank arms, i got a used set of arms from a friend, now how do i take off the old ones and put on the new ones, directions or re-directing will be appreciated, thanks

mx_599

you really need a special tool

pinkrobe

More details! Are they square taper, ISIS or what? You will need a crank pulling tool for sure.

Arom

ahh, the lbs monopoly strikes again, i either hafta pay them to do it or pay them to get the tool eh? oh well thank you all, also im not sure what you mean by square taper, isis and such, could you elaborate?...just fyi in reference to my earlier lbs comment im very biased against them, im a 15 year old and my bike work always seems to take a very long time, like they prioritize older customers, also i had them do a frame swap for me and after 2 weeks of phone tag and a promise to let me know as soon as it was done, followed by two weeks of silence i called over there and was told "oh yeah man its been done for a week and a half now" they never conacted me so im trying to become self reliant on the labor end of things and reliant on online for parts.

pinkrobe

Good for you for being self-reliant. I started working on my own bikes when I was still in high school, and it has come in super-handy over the years. Removing/installing cranks is something you should be able to do yourself with the right tools. I bought my crank puller over 15 years ago for $8, and I still use it on my older bikes.

To answer your question on square taper vs. ISIS vs. Octalink vs. ?, it might be easiest to figure out what cranks you have on your bike.
Square taper cranks were on the '04 Rockhoppers, the 2005 bike use ISIS, and the '06 has the new GXP outboard bearing BB.
Square, ISIS and Octalink can all use the same tool from Park, the CWP-6 [https://www.parktool.com/products/det...&item=CWP%2D6]. It's very handy. If you have the GXP crank/BB, you can get the cranks off and on with a hex wrench. For instructions on how to do a lot of bike wrenching, www.parktool.com is a great resource.

mx_599

just get this...it's not expensive. it is the one mentioned above

peripatetic

I have a cheaper, Lifu one, bought from Performance, works fine on a square taper spindle (just look at the hole on the crank arm that will connect to the bike. If it's a square hole, you can use one of these tools.) WARNING: if it is square taper and you use the remover tool, be very careful threading the big part on--if you do it wrong, you WILL strip the soft threading on the crank, and it will be significantly more difficult to remove, esp. since you don't have the pedal attached anymore.

Sorry about your agist-lbs. That sucks. Maybe they're trying to turn you into a future summer hire .

Arom

thanks for all the help guys, i have square taper so i should be able to get a tool to do the job. In response to the lbs trying to hire me that would be my dream job, but not from them, theres a slightly unlocal lbs that might work out this summer and your guys tips will only help me, thanks alot

Thrifty1

https://ebiketools.com/product.php?d=186

minastirith

I have a Shimano square taper bottom bracket. I removed it for some non-sense reason but when I tried putting them back on, the crank wouldn't fully go into the bottom bracket..only like 80%? I have the right tools incl. Park tool BB puller, Park too allen wrench..