Hollow tech 1 crank problems

imperial21 · Aug 22, 2012

Hi
I am new too this site and i am after some help please with one of my bikes, This is a 2008 specialized rockhopper pro disk, probably a bit modern for this site ! ( I prefer Kona s early 90s ones ) any way i want to replace the crank rings on the specilaized as they re worn out ! Normally an easy job, but this bike has a hollow tech 1 crank I put a bar through the crank and put a crank extractor on it, it extracted the threads from the arm and thats about it !

has anyone any other suggestion to remove the crank arm ?
Thanks

tintin40 · Aug 22, 2012

Maybe i've missed understood. But if i remember when i had these it was a allen key on the non-drive side then pull the drive side. Done.

This to modern for the section up to 1997. Their is a 1998 on wards section

Sorry if incorrect on the cranks

drystonepaul · Aug 22, 2012

[ moved to 98 --> section ]

By Hollowtech 1 do you mean Octalink cranks?
In which case a standard crank extractor with an insert plug for the M10 axle size should've worked.

If you've stripped the threads out of the cranks then a bearing puller is probably your best bet for getting the crank off.

imperial21 · Aug 22, 2012

Hollow tech1 i believe is correct as both arms are removable, Thanks for moving to the correct section !
I have tried with a bearing puller but it was nt working well but i will go back to that plan thanks

Mindmap3 · Aug 25, 2012

If I remember correctly, the Octalink cranks and bottom bracket set up that you are referring to had a thicker axle than the old square taper cranks so you need to buy a little plug that goes into the end of the axle. The standard crank puller then pushes against this to remove the cranks from the bb axle.

gtRTSdh · Aug 27, 2012

are the threads in the cranks stripped? If not you can get self extracting bolts:

http://www.ebay.co.uk/itm/Shimano-Self- ... 27c17296d1

imperial21 · Aug 27, 2012

Hi
Got the cranks off !!! using a 3 legged puller. Unfortunetlly i had stripped the thread in the crank arms. but on the good side the chain rings are now replaced yay !!!

Now i have to sort the brake calipers

Hollow tech 1 crank problems

imperial21

Old School Hero

tintin40

drystonepaul

imperial21

Old School Hero

Mindmap3

Senior Retro Guru

gtRTSdh

Senior Retro Guru

imperial21

Old School Hero

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