replacing a bottom bracket
03-15-09 | 04:07 PM
#1
Thread Starter
Junior Member
Joined: Mar 2009
Posts: 6
Likes: 0
From: minneapolis
Bikes: a couple old treks (I'm a poor, but love biking)
replacing a bottom bracket
So I picked up an old trek 400 elance cheap off craigslist the same as this model (https://www.vintage-trek.com/TrekBrochure1987.htm#page13). To make a long story short I wont have the bike for another month so I can't measure anything, but I wanted to have some new components ready to put on it when I get it. I bought a new shimano 175 mm 105 FC-5502 crankset compatible with V1 octalink bottom bracket. I will be running a 9 speed setup. I know the old trek has a square tapered bb, so I will have to replace it. I've never replaced a old style bb with the new cartridge style so I'm not sure what size I will need. Has anyone replaced a similar style bb before or have any advice?
03-15-09 | 04:42 PM
#3
Senior Member
Joined: Mar 2003
Posts: 8,521
Likes: 2
From: Beaufort, South Carolina, USA and surrounding islands.
Bikes: Cannondale R500, Motobecane Messenger
Just remove the old BB cups, bearings, and crank axle. Clean the threads. Grease the threads. Install the new cartridge BB.
03-15-09 | 05:45 PM
#5
Senior Member
Joined: Feb 2004
Posts: 30,225
Likes: 649
From: St Peters, Missouri
Bikes: Catrike 559 I own some others but they don't get ridden very much.
03-15-09 | 06:55 PM
#6
Senior Member
Joined: Aug 2005
Posts: 33,657
Likes: 1,119
From: Pittsburgh, PA
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
