Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Help,divine guidance, further instruction on removing freehub body

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Help,divine guidance, further instruction on removing freehub body

Old 01-21-08, 10:33 AM
  #1  
Don777
Newbie
Thread Starter
 
Join Date: Aug 2005
Location: Spring Hill/Columbia, Tennessee
Posts: 62

Bikes: Cannondale R600 and Beater MTB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Help,divine guidance, further instruction on removing freehub body

I have a 9 speed freehub body that I am trying to remove. With 20K miles I would like to flush it out. Checked the Park site for instruction. Seems mostly clear. I used the 11 MM Allen wrench with and 18 inch pipe for leverage. The Park site said it would be difficult. That is an understatement. I am attempting to turn the thing counter-clockwise, all to no avail. I feel that I might break something, warp the wheel, etc. and I do not have a back-up wheel. Any wisdom is appreciated.
Don777 is offline  
Old 01-21-08, 11:41 AM
  #2  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,526

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 1956 Post(s)
Likes: 0
Liked 960 Times in 666 Posts
11mm? All of the Shimano freehub bodies I've worked on use a 10 mm Allen wrench. They can be TIGHT but they unscrew counterclockwise just as you are attempting.
HillRider is offline  
Old 01-21-08, 12:23 PM
  #3  
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 30,225

Bikes: Catrike 559 I own some others but they don't get ridden very much.

Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1570 Post(s)
Liked 638 Times in 359 Posts
I vaguely remember having to find an 11 mm wrench for one but, like hillrider, most of the Shimano freehub bodies that I have removed have been 10 mm. An 18 inch breaker bar would freak me out too. I've never needed to use anything like that for removing a freehub body bolt.
Retro Grouch is offline  
Old 01-21-08, 12:40 PM
  #4  
Sheldon Brown
Gone, but not forgotten
 
Sheldon Brown's Avatar
 
Join Date: Jul 2002
Location: Newtonville, Massachusetts
Posts: 2,301

Bikes: See: https://sheldonbrown.org/bicycles

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
Originally Posted by Don777 View Post
I have a 9 speed freehub body that I am trying to remove. With 20K miles I would like to flush it out.
You don't need to remove it to flush it. My advice is to leave it on the hub, unless/untill you decide to replace it for some reason.

Originally Posted by Don777 View Post
Checked the Park site for instruction. Seems mostly clear. I used the 11 MM Allen wrench with and 18 inch pipe for leverage. The Park site said it would be difficult. That is an understatement. I am attempting to turn the thing counter-clockwise, all to no avail. I feel that I might break something, warp the wheel, etc. and I do not have a back-up wheel. Any wisdom is appreciated.
Put the wrench in a vise, that way you can apply balanced torque to the wheel with your two hands 180 degrees apart. This minimizes any risk of damaging the wheel.

Sheldon "Couple" Brown
Sheldon Brown is offline  
Old 01-21-08, 01:17 PM
  #5  
MudPie
Senior Member
 
MudPie's Avatar
 
Join Date: May 2004
Location: Southern California
Posts: 2,162
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Liked 101 Times in 79 Posts
Originally Posted by HillRider View Post
11mm? All of the Shimano freehub bodies I've worked on use a 10 mm Allen wrench. They can be TIGHT but they unscrew counterclockwise just as you are attempting.
I have a Bontrager freehub that takes an 11mm hex wrench. I couldn't find an 11mm, but found that 7/16" is pretty darn close. Riding torque is not exerted through that bolt. Rather, the bolt holds the freehub body so it engages a mechanical lock.

That screw holding the freehub body to the hub shouldn't be on that tight. Installation torque is probably in the 30 ft-lb range.

What brand freehub do you have? If it's Shimano, then it's probably 10mm. An 11mm in a Shimano may be catching on something other than the freehub body bolt.

Also, I use 3/8 drive hex bit socket tools. These are stiffer and provide a more positive engagement than typical L shaped wrenches.
MudPie is offline  
Old 01-21-08, 05:16 PM
  #6  
Don777
Newbie
Thread Starter
 
Join Date: Aug 2005
Location: Spring Hill/Columbia, Tennessee
Posts: 62

Bikes: Cannondale R600 and Beater MTB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks for the responses. Yes, it is an 11 MM. The Park site said a Shimano hub would be 10 and some others will be an 11. I tried the 10, but it was too small so I ordered an 11 from my hardware store. The 11 fits good.
I may try the vise method as suggested by Mr. Brown and if that does not easily/comfortably remove the pin, I will take Mr. Brown's advice and try to flush it out while still on the hub. Again, thanks
Don777 is offline  
Old 01-21-08, 05:27 PM
  #7  
tellyho
Your mom
 
Join Date: Aug 2006
Posts: 2,546
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
I'd definitely just leave it on there and flush.
tellyho is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.