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


Shimano BB-UN26 bottom bracket torque specs
#1
Ello. I was just wondering if anybody knows what the torque settings for the cups and crank arms are on this? A piece of paper within the packaging states to consult the manual, but there isn't one, not even online (that I can find).

Also, which way does the cartridge fit onto the bike? As you can see in the image below it says.#

[Image: BB_UN26.jpg]

L < D - NL > R

Does that mean that the side without the metal threads goes to the drive side? I really appreciate any help. Thanks.
  Reply
#2
this would work for you
http://www.shimano.com/media/techdocs/content/cycle/SI/FC/SI-0086A-001/SI-0086A-001-ENG_v1_m56577569830657937.pdf
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#3
<-L means left and right-> means right.

Also, assuming you have english threaded BB (teh vast majority of bikes have this) then you want to make sure that you are using the correct threaded cup on each side. The drive side has reverse threads.
  Reply
#4
the"L" you put thru the drive side so it ends up on the left side, remember the right side probably has left hand threads, do not force or strip these threads in the shell
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#5
[Image: IMG_20150908_112532.jpg]

So just to clarify, it goes in this way? Cheers for the info people.

By the way - should the nature of the threads allow it to fit only one way?
  Reply
#6
(09-13-2015, 11:33 AM)Trance Wrote:  So just to clarify, it goes in this way? Cheers for the info people.

By the way - should the nature of the threads allow it to fit only one way?

"R" goes toward the right side of the bike, "L" goes toward the left side of the bike. (When the bike is standing upright.)

Yes, the threads will only allow the cups to go on the correct side. But some BB's have removable cups on both sides so it is "possible" that the cup that's on there is on the wrong side.
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Buying my first road bike
Today 11:33 AM
Merida Matts 6.5 Bicycle | June 2020
Today 11:24 AM
Clunk noise from front cogs
Today 11:20 AM
Replacement components for 7-Speed Shima...
Today 11:19 AM
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
Hello from south west Florida :)
Yesterday 09:27 PM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
26 posts
no avatar 2. CharleyFarley
18 posts
no avatar 3. Painkiller
17 posts
no avatar 4. Joe_W
14 posts
no avatar 5. Criminal
9 posts