Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the June Giveaway for a brand new Merida Matts 6.5 bicycle


How do u remove the Shimano FC-M521 crank set
#1
How do u remove the Shimano FC-M521 crank set from the specialized rockhopper expert disk 2009 and what tools do you need to do this ?

thanks !!!

specialized rockhopper expert disk 2009 link: http://www.specialized.com/gb/en/bc/SBCBkModel.jsp?spid=40635
  Reply
#2
Well first you would need to remove the Crank bolts on the arms, they usually take a 15mm socket.
After you get those off you'd want to use a crank puller. You can check out the Videos, there is a tutorial on how to remove the cranks and one to remove the bottom bracket.
You might not actually have to remove the bottom bracket if your just putting on a new crankset and it uses the same bottom bracket.
  Reply
#3
Not sure without seeing the crank. Post a pic if you can. The M521 is an Octalink crankset, similar to the ISIS standard. Some cranks are of the self extracting kind (Like my Truvativs) and don't require a crank tool. Watch the video at this site, and go from there.
Dedicated scholar of bicycles
  Reply
#4
(01-16-2010, 02:58 PM)Jordan300 Wrote:  Well first you would need to remove the Crank bolts on the arms, they usually take a 15mm socket.
After you get those off you'd want to use a crank puller. You can check out the Videos, there is a tutorial on how to remove the cranks and one to remove the bottom bracket.
You might not actually have to remove the bottom bracket if your just putting on a new crankset and it uses the same bottom bracket.

i have removed both the crank bolts and put in the crank puller but nothing happened because of the tube thing when i toke the crank bolt of is hollow ?? also my crank arm on the other side to the chainrings has not got a allen key like the slx cranks so how do i remove that as well?
thanks
  Reply
#5
See Park Tool:-
http://www.parktool.com/repair/readhowto.asp?id=120

You could put a thin flat metal disc inside the crank end which is just big enough to rest on the end of the tube. (or use a washer where the center hole doesn't allow the tool end to go through?)
All the Park tool is a standard crank puller with a "plug" on the end.
Ride hard or ride home alone!
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Merida Matts 6.5 Bicycle | June 2020
Today 05:47 PM
Downtube Shifters on 1991 Miyata 721
Today 03:19 PM
Clunk noise from front cogs
Today 01:17 PM
Replacement components for 7-Speed Shima...
Today 12:46 PM
Buying my first road bike
Today 12:00 PM
Rookie looking for help w/drivetrain com...
Today 10:42 AM
Compatability between Shimano 11 and 10 ...
Today 08:43 AM
Tube Recommendations
Today 05:25 AM
Rear brake tension
Today 03:20 AM
Modernizing my Fuji Gran Tourer
Yesterday 10:33 PM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
25 posts
no avatar 2. Painkiller
19 posts
no avatar 3. CharleyFarley
17 posts
no avatar 4. Joe_W
13 posts
no avatar 5. Zviedrs
9 posts