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

Shimano Hydraulic Brake hood reattachment

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.

Shimano Hydraulic Brake hood reattachment

Old 12-15-18, 11:32 AM
  #1  
wgscott
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 4,918
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 235 Times in 146 Posts
Shimano Hydraulic Brake hood reattachment

I had to bleed the kid's 105 (RS505 ) brake the other day. Rather than read the instructions, I peeled back the hood from the front, before I discovered the bleed port is near the bar. So I peeled up the wrong part of the hood, and unfortunately I can't get it to go back into place. Here is a photo of the problematic hood, and the other one for reference. Is there a simple way to fix this that I am overlooking?




Hood I messed up.



Hood installed correctly.

I tried some isopropanol, and it helped a bit with the RS505 hood, but not with the ultegra one (below):



Last edited by wgscott; 12-15-18 at 12:51 PM. Reason: more info
wgscott is offline  
Old 12-15-18, 11:33 AM
  #2  
wgscott
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 4,918
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 235 Times in 146 Posts
I have a similar issue with an Ultegra hood that has been this way for years:


wgscott is offline  
Old 12-15-18, 05:51 PM
  #3  
wschruba 
Senior Member
 
Join Date: Sep 2015
Location: New Jersey
Posts: 1,535
Mentioned: 27 Post(s)
Tagged: 0 Thread(s)
Quoted: 465 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
As the tech doc specifically points out, there are nubs that need to fit into the lever body. Some of them are a tight fit/have a relieved area on them (lip) to catch the other side of the lever body. I find a blunt tool, like a 2/2.5mm ball end, can be used to press them through/in far enough that they stay in place.

I hope you didn't try to pull the hood up/over the shifter body--the modern Shimano hoods do not like that, will stretch out, and never fit right again.
wschruba is offline  
Old 12-15-18, 08:22 PM
  #4  
wgscott
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 4,918
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 235 Times in 146 Posts
Originally Posted by wschruba View Post
I hope you didn't try to pull the hood up/over the shifter body--the modern Shimano hoods do not like that, will stretch out, and never fit right again.
wgscott is offline  
Old 12-15-18, 08:29 PM
  #5  
stevoo
Stevoo
 
Join Date: Jun 2013
Location: So Cal
Posts: 200

Bikes: Road and mountain tandems, single bikes too.

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 29 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Sometimes they just won't return from the stretch. Sometimes if they get oil on them they also swell and never fit well again.

Two solutions.
1) Obvious, new hood.
2) Have used this many times. Make sure hood is clean, free of oil underside too as it caused slippage. Wrap one or two turns of black silicone self fusing tape to keep hood in place. Works very well. Same grip as normal hood. Hardly visible. Pretty durable. Cheap n easy.
Goid Luck.
stevoo is offline  
Old 12-16-18, 12:41 PM
  #6  
wgscott
Occam's Rotor
Thread Starter
 
Join Date: Jul 2013
Posts: 4,918
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 235 Times in 146 Posts
I think in both cases I have probably over-bent (damaged) the hoods. The ultegra one has little round tabs with ridges on them, so they should just pop into their holes, but I think the ridge must be too flexible or something, as it comes right back out.

I'm tempted to glue it, but I don't want to do further damage, and someday I might have to bleed them again.

The 105 hood is almost back into position, thanks to the isopropanol trick.
wgscott is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
johngwheeler
Road Cycling
17
10-09-18 11:08 AM
Garfield Cat
Bicycle Mechanics
7
07-24-16 02:54 PM
busygizmo
Road Cycling
0
10-03-12 10:24 AM
shuru421
Road Cycling
4
08-27-12 04:15 PM
eeelima
Classic and Vintage Bicycles: Whats it Worth? Appraisals.
0
04-14-10 09:05 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

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