Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 09-14-09, 01:59 PM   #1
ch9862 
Senior Member
Thread Starter
 
ch9862's Avatar
 
Join Date: Nov 2004
Location: Falls Church, VA
Bikes:
Posts: 260
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Rear der. pulleys

My bike developed fairly annoying noise, which I'm pretty sure comes from rear der. It's very much like a bird chirp. The bike is 1x9, with Shimano 105 rear derailer (long cage). When riding under normal load, noise is very subtle in larger cogs, gets louder when getting to the outer (smaller) ones. Chirping is the loudest when changing gears.

I cleaned and lubed the chain, with no effect. Do I need to lube or grease the pulleys? It looks like there are no bearings there, just simple bushing in one of them.

TIA
ch9862 is offline   Reply With Quote
Old 09-14-09, 02:11 PM   #2
Davet
Licensed Bike Geek
 
Davet's Avatar
 
Join Date: Oct 2002
Location: Los Barriles, Baja Sur, Mexico
Bikes: Kirk Terraplane, Serotta Ottrott, Spectrum Super Custom, Hampsten Carbon Leger Tournesol
Posts: 1,061
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
A little spritz of light chain oil, or most any other oil works fine. If you really want to get anal, you can take the pulleys off, remove the protective covers, wipe out the shmootz that's in there and then lube them before reinstalling. Not too much lube though.
Davet is offline   Reply With Quote
Old 09-14-09, 03:48 PM   #3
MudPie
Senior Member
 
MudPie's Avatar
 
Join Date: May 2004
Location: Southern California
Bikes:
Posts: 1,874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by ch9862 View Post

I cleaned and lubed the chain, with no effect. Do I need to lube or grease the pulleys? It looks like there are no bearings there, just simple bushing in one of them.

TIA
Pulley wheels need tender loving care too. You can easily remove the pulleys with the deraillure on the bike. Note there may be an "upper" and "lower" pulley. Once you remove the pulley, there will probably be a metal dust shield on both sides of the bearing. Remove those to expose the bearings, probably a journal bearing which looks like a bushing. Remove the bearing and clean it and the pulleys. I like to smear a dab of grease on the bearing before reassemling. Some use a heavier oil.

It should be a pretty simple job, only needing an Allen wrench to remove the pulleys.
MudPie is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 02:53 PM.