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

Half cartridge BB service

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.

Half cartridge BB service

Old 06-26-20, 05:07 PM
  #1  
Darth Lefty 
Disco Infiltrator
Thread Starter
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 11,073

Bikes: Schwinn Paramount, Salsa Timberjack, Diamondback Expert TG, Burley Samba

Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quoted: 2024 Post(s)
Liked 602 Times in 418 Posts
Half cartridge BB service

I pulled this out of my kid's Hotrock, which I am rebuilding with slightly better parts. I am planning to replace it but sort of slacked off on the project and want to get him on the road. I can clearly clean and lube the adjustable side but is there anything I can do about the fixed side, other than drip some oil on it and try to work it in? I can't find any clip to remove to separate the assembly. The fit seems to be a little loose so I guess there arenít any rubber seals and it will square up when adjusted

It's 118 mm spindle for 68/73mm English BB (it had an idler that's getting replaced with a spacer), so at least replacement is no big deal

Last edited by Darth Lefty; 06-26-20 at 05:12 PM.
Darth Lefty is online now  
Old 06-26-20, 05:08 PM
  #2  
Darth Lefty 
Disco Infiltrator
Thread Starter
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 11,073

Bikes: Schwinn Paramount, Salsa Timberjack, Diamondback Expert TG, Burley Samba

Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quoted: 2024 Post(s)
Liked 602 Times in 418 Posts

Photo thereof
__________________
Genesis 49:16-17
Darth Lefty is online now  
Old 06-26-20, 05:40 PM
  #3  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 3,948
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 979 Post(s)
Liked 321 Times in 212 Posts
Are you sure that you can't pull the drive side BB cup off? Give it a try. You would then be able to lubricate the drive side bearings
alcjphil is offline  
Old 06-26-20, 05:44 PM
  #4  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 13,793

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: 2500 Post(s)
Liked 571 Times in 440 Posts
One should be able to set the frame on it's RH side and flod the shell/cup/bearing with solvent, air blast out the remaining and finger squeeze in grease. Awkward for sure but not at all hard to do. But removing the RH cup is the WAY. There are methods to secure cheap plate wrenches wrenches on the cup with the axle and it's nut/bolt. Then one can leverage or hammer away and not be too worried about wrench slip. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 06-26-20, 06:34 PM
  #5  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 6,815

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400

Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 1303 Post(s)
Liked 707 Times in 487 Posts
I suspect you tap the spindle on the drive side while holding the cup the DS comes apart as well.
dedhed is offline  
Old 06-26-20, 07:40 PM
  #6  
Darth Lefty 
Disco Infiltrator
Thread Starter
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 11,073

Bikes: Schwinn Paramount, Salsa Timberjack, Diamondback Expert TG, Burley Samba

Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quoted: 2024 Post(s)
Liked 602 Times in 418 Posts
Thanks everyone. I'll give it a shot
__________________
Genesis 49:16-17
Darth Lefty is online now  
Old 06-26-20, 07:45 PM
  #7  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 32,261

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

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1441 Post(s)
Likes: 0
Liked 260 Times in 209 Posts
Do you have a bench vise? If so, open it up enough to allow the rim of the DS cup to rest on the jaw edges. Then use a soft mallet to pound on the end of the spindle and the cup should pop off.
HillRider is offline  
Old 06-27-20, 07:00 AM
  #8  
tomtomtom123
Senior Member
 
Join Date: Jan 2017
Posts: 964
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 316 Post(s)
Likes: 0
Liked 100 Times in 71 Posts
A new Shimano BB is around $12 here.
tomtomtom123 is offline  
Old 06-27-20, 07:04 AM
  #9  
3alarmer
Friendship is Magic
 
3alarmer's Avatar
 
Join Date: Nov 2010
Location: The Big Tomato
Posts: 18,922

Bikes: old ones

Mentioned: 259 Post(s)
Tagged: 0 Thread(s)
Quoted: 18663 Post(s)
Liked 2,178 Times in 1,603 Posts
Originally Posted by tomtomtom123 View Post
A new Shimano BB is around $12 here.
...this. I was running into these at the bike co-op a lot before I left. After a couple of tries I just started replacing them with something else.
3alarmer is offline  
Old 06-27-20, 05:42 PM
  #10  
Darth Lefty 
Disco Infiltrator
Thread Starter
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 11,073

Bikes: Schwinn Paramount, Salsa Timberjack, Diamondback Expert TG, Burley Samba

Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
Quoted: 2024 Post(s)
Liked 602 Times in 418 Posts
Indeed it did just tap out the other side. Thanks everyone who contributed ideas
__________________
Genesis 49:16-17
Darth Lefty is online now  

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 © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.