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

Question about Shimano 600 brake adjustment

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.

Question about Shimano 600 brake adjustment

Old 06-22-20, 12:40 PM
  #1  
Binky
Senior Member
Thread Starter
 
Binky's Avatar
 
Join Date: Mar 2013
Location: Southern Ontario, Canada
Posts: 764

Bikes: Too, too many....

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Likes: 0
Liked 36 Times in 19 Posts
Question about Shimano 600 brake adjustment

The Forum is having issues today... so we'll see if this goes through.

I need to know how to use the fine adjustment thimble on Shimano 600 Ultegra 6400 brake callipers...

Picked up a gorgeous 1994 (?) Thin Blue Line "Lightning Bolt" with this group on it...

Bink


Binky is offline  
Old 06-22-20, 01:02 PM
  #2  
blamester
Blamester
 
Join Date: Dec 2011
Location: Ireland
Posts: 737

Bikes: Peugeot teamline

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 164 Post(s)
Liked 42 Times in 36 Posts
Originally Posted by Binky View Post
The Forum is having issues today... so we'll see if this goes through.

I need to know how to use the fine adjustment thimble on Shimano 600 Ultegra 6400 brake callipers...

Picked up a gorgeous 1994 (?) Thin Blue Line "Lightning Bolt" with this group on it...

Bink


The thread in and out to lenghten or shorten the cable. So you can adjust the brake without loosening the pinch bolt and therefore no tools required.
Try it and watch what happens.
blamester is offline  
Old 06-22-20, 01:20 PM
  #3  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 7,569

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1158 Post(s)
Liked 549 Times in 396 Posts
Originally Posted by blamester View Post
The thread in and out to lenghten or shorten the cable. So you can adjust the brake without loosening the pinch bolt and therefore no tools required.
Try it and watch what happens.
It will be easier to turn if you squeeze the brake closed first so that you are not fighting the spring tension. Turning the adjuster out tightens the cable/brake turning it inwards loosens it.
dsbrantjr is offline  
Likes For dsbrantjr:
Old 06-22-20, 01:21 PM
  #4  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 32,266

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: 1443 Post(s)
Likes: 0
Liked 262 Times in 211 Posts
When setting up new brakes or installing new cables, I thread the adjuster in fully and then back it out one turn, Run the cable through the adjuster and through the cable clamp. Squeeze the brake pads firmly against the rim (by hand or with a "third hand" tool). Pull all of the slack out of the cable and tighten the clamp bolt snugly.

Let go of the pads and see how much clearance you have between the pads and the rim. If it's really tight, squeeze the brake lever to make the cable slip SLIGHTLY to increase clearance. If it's slightly tight, thread the adjuster in to increase clearance and fully tighten the clamp bolt. If the clearance is really excessive loosen the clamp bolt and redo removing the cable slack. If the clearance is only a bit too much turn the adjuster out to get the right clearance. Be sure to tighten the clamp bolt very firmly once you get the pads set properly.

Once the initial clearance is set, use the adjuster to compensate for increasing rim clearance as the pads wear down.
HillRider is offline  
Likes For HillRider:
Old 06-22-20, 01:52 PM
  #5  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 7,569

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1158 Post(s)
Liked 549 Times in 396 Posts
Once you have followed HillRider's advice, squeeze the brake lever as hard as you can with your dominant hand 4 or 5 times to ensure that the clamp bolt's grip is not going to slip.
dsbrantjr is offline  
Old 06-22-20, 01:57 PM
  #6  
Binky
Senior Member
Thread Starter
 
Binky's Avatar
 
Join Date: Mar 2013
Location: Southern Ontario, Canada
Posts: 764

Bikes: Too, too many....

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 84 Post(s)
Likes: 0
Liked 36 Times in 19 Posts
Originally Posted by dsbrantjr View Post
It will be easier to turn if you squeeze the brake closed first so that you are not fighting the spring tension. Turning the adjuster out tightens the cable/brake turning it inwards loosens it.

Ha ha ha... Thanks for the replies, guys.
OK I get it that you turn the thimble with or against the spring pressure to adjust the cable length.
The thing is, this plastic insert that the metal thimbles goes through has a LEG that runs parallel to the threads.
I will take a picture that shows the BACK of the thimbles.
i hope the pictures turn out.
I do not want to turn the thimbles if this plastic thing on the back of the calliper is a button or slide of some sort.
Thanks !!
Bink

Binky is offline  
Old 06-22-20, 04:41 PM
  #7  
shelbyfv
Banned.
 
Join Date: Jun 2007
Posts: 7,172
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 1810 Post(s)
Liked 1,182 Times in 672 Posts
This thread might help Button on the back of Shimano 600 calliper...
shelbyfv 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 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.