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

I can't extract sealed bearings out of hub

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.

I can't extract sealed bearings out of hub

Old 01-22-19, 06:33 AM
  #1  
patricio.montes
Member
Thread Starter
 
patricio.montes's Avatar
 
Join Date: Jan 2019
Location: Spain
Posts: 38

Bikes: Giant XTC Advanced 29” 1.5 2017

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I can't extract sealed bearings out of hub

Hi.

I am servicing the rear hub of my Giant XTC Advanced 29” 1.5 2017. According to Giant, the hub is manufactured by Formula. I have not found any service manual and neither Giant nor Formula have answered my requests.

I am unable to extract the bearings. I'm tapping hard from the side of pawls, bearings are supposed so be released in the other side but instead they don't move a milimeter and I am afraid of tapping even harder. What am I missing?

Is it maybe a blind installation? Or maybe it is removable the part of the hub where the pawls are and once opened the bearings then are extracted from that side instead of usual.

I can't upload pictures, please let me know to share.

Thanks and regards.

UPDATE: Finally, the pictures.
Attached Images
File Type: jpg
buje-6-nucleo-lado-exterior.jpg (68.2 KB, 129 views)

Last edited by patricio.montes; 01-24-19 at 03:49 PM. Reason: Adding pictures.
patricio.montes is offline  
Old 01-22-19, 07:07 AM
  #2  
Nessism
Senior Member
 
Nessism's Avatar
 
Join Date: Jun 2004
Location: Torrance, CA
Posts: 2,976

Bikes: Homebuilt steel

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 263 Post(s)
Liked 99 Times in 77 Posts
What about putting photos on a 3rd party hosting site?
Nessism is offline  
Old 01-22-19, 07:13 AM
  #3  
rhenning
Senior Member
 
Join Date: Apr 2006
Posts: 3,594
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 357 Post(s)
Likes: 0
Liked 75 Times in 54 Posts
You need 10 post to be able to post pictures/ Roger
rhenning is offline  
Old 01-22-19, 07:30 AM
  #4  
freeranger
Senior Member
 
freeranger's Avatar
 
Join Date: Jun 2005
Location: Kentucky
Posts: 2,048

Bikes: 06 Lemond Reno, 98 GT Timberline mtn.bike

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 250 Post(s)
Liked 380 Times in 243 Posts
I found this --while not a Formula wheel, looks like the removal may be similar. Looks like you may need a special tool, or take it to a bike shop which should have one:
freeranger is offline  
Old 01-22-19, 04:41 PM
  #5  
davidad
Senior Member
 
Join Date: Feb 2009
Posts: 6,503
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 523 Post(s)
Likes: 0
Liked 128 Times in 108 Posts
Formula If this is the hub you drive out the nds first.
davidad is offline  
Old 01-22-19, 10:34 PM
  #6  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 12,735

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1360 Post(s)
Liked 585 Times in 441 Posts
Aluminum hub & steel bearings?
Heat with a hair dryer.
Aluminum has a higher coefficient of expansion than steel.
If nothing else, it might help break any "corrosive bond" between the 2 parts.
Bill Kapaun is offline  
Likes For Bill Kapaun:
Old 01-23-19, 10:55 AM
  #7  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,320 Times in 830 Posts
& if hair dryer not hot enough, a heat gun gets hotter , quicker..
fietsbob is offline  
Old 01-23-19, 03:38 PM
  #8  
patricio.montes
Member
Thread Starter
 
patricio.montes's Avatar
 
Join Date: Jan 2019
Location: Spain
Posts: 38

Bikes: Giant XTC Advanced 29” 1.5 2017

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks everyone. Fortunately it is solved by nudging the spacer to one side, then punching the outer bearing. The inner bearing was held by a circlip. As soon as the system permits it, I will upload the pictures anyway. Thanks!
Attached Images

Last edited by patricio.montes; 01-24-19 at 03:51 PM.
patricio.montes is offline  
Old 01-24-19, 03:52 PM
  #9  
patricio.montes
Member
Thread Starter
 
patricio.montes's Avatar
 
Join Date: Jan 2019
Location: Spain
Posts: 38

Bikes: Giant XTC Advanced 29” 1.5 2017

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I have finally been able to upload the pictures, as promised. Thanks again.
patricio.montes is offline  
Old 06-09-21, 08:03 AM
  #10  
MrMazda
Junior Member
 
Join Date: Jun 2021
Location: Montréal
Posts: 18

Bikes: 2017 Specialized Roubaix COMP Di2

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Hi,

May I ask what the exact model of this Formula freehub is?
What bearings does it use? Can't make out the number from the pic!
Thanks
MrMazda is offline  
Old 06-09-21, 11:05 AM
  #11  
sch
Senior Member
 
Join Date: May 2003
Location: Mountain Brook. AL
Posts: 3,901
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 276 Post(s)
Likes: 0
Liked 91 Times in 72 Posts
Thank you for the pix and followup. Retaining clips are more common in heavier machinery for positive bearing
placement but are a bit of a surprise in bicycle level mechanisms, especially in hidden locations like this. Something
to think about for the DIY and shop mechanic when things don't go as expected before the 2# sledge is brought out.
sch is offline  
Old 07-09-21, 11:43 AM
  #12  
patricio.montes
Member
Thread Starter
 
patricio.montes's Avatar
 
Join Date: Jan 2019
Location: Spain
Posts: 38

Bikes: Giant XTC Advanced 29” 1.5 2017

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by MrMazda View Post
May I ask what the exact model of this Formula freehub is?
No idea. I can't see any reference.

Originally Posted by MrMazda View Post
What bearings does it use? Can't make out the number from the pic!
6902 bearings.
patricio.montes is offline  
Old 07-09-21, 12:43 PM
  #13  
Racing Dan
Senior Member
 
Racing Dan's Avatar
 
Join Date: Aug 2015
Posts: 1,833
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 1070 Post(s)
Liked 151 Times in 112 Posts
I suggest heating it with an electric heat gun. IMO heat should be SOP.
Racing Dan is offline  
Old 07-09-21, 02:57 PM
  #14  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 15,048

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2973 Post(s)
Liked 1,259 Times in 882 Posts
I use the kitchen oven set to 350 for about 5 or 10 minutes. Expands the outer body more then the bearings. Makes knocking (and many need more then a "tap") out the bearings far easier. I do the same FH body heating on reassembly, with the bearings cold. Best done with a very clean FH body and the wife out of the house Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ronfinch
Bicycle Mechanics
7
02-02-18 01:11 PM
hoyc
Bicycle Mechanics
19
03-31-13 12:47 PM
norbikes
Bicycle Mechanics
4
08-30-10 04:21 AM
Basil Moss
Bicycle Mechanics
0
05-31-10 09:20 AM
Remsy
Road Cycling
1
03-09-10 10:01 PM

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 My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.