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 08-02-08, 10:25 AM   #1
chst
Junior Member
Thread Starter
 
Join Date: Aug 2005
Location: seattle
Bikes:
Posts: 18
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Installing New Disc Brakes? Levers have no power?

EDIT: the title should say "New Disc Brake Pads".

I installed new disc brake pads. I have Hayes...

1. I removed the old pads
2. I tried to insert the new pads.
3. But, there wasn't enough space.
4. Without doing any research I decided maybe I should loosen the bolts that face perpendicular from the fork. This opens up that space so the pads can fit in. However, of course when you tighten those bolts back down there is no space between the pads and you can't put your wheel back on.
5. So I went back to the internet and read that one should push the pistons back to make space, but not to push the part in the middle.
6. I did this and my brakes went in fine and all was well.
7. However, when I went to use the brakes they had no power whatsoever.
8. I then noticed a seemingly small amount of fluid had leaked from around the brakes.
9. So I went back to reading and it said the brakes have to wear in.
10. So I rode around the parking lot braking and braking for a substantial amount of time. The brakes seem to get better, but not ever to where they should be.

The levers don't seem to have any power, they come back much farther than the other brake, which seems not right. As well one can see that with the back brake the pads actually compress around the disc, whereas on the front the pads barely move. It seems like maybe I lost some hydraulic fluid? Or, got air in the system?

Thanks for any help.
chst is offline   Reply With Quote
Old 08-02-08, 12:10 PM   #2
chst
Junior Member
Thread Starter
 
Join Date: Aug 2005
Location: seattle
Bikes:
Posts: 18
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I should have actually researched more myself before posting. From what I've read if the brake levers go back to the handlebars you need to bleed the brakes... Luckily one of the LBSs carries the kit.
chst is offline   Reply With Quote
Old 08-02-08, 07:45 PM   #3
DeadSailor
black betty
 
DeadSailor's Avatar
 
Join Date: Mar 2007
Location: florida
Bikes: custom flatlandbike, trek fuel ex8
Posts: 228
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i think those bolts 'perpendicular to the fork' may have been what holds the caliper together, which you dont want to touch unless you are overhauling them.

so pretty good chance you lost some fluid opening up your caliper like that. hayes arent that hard to bleed though
DeadSailor 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 07:26 AM.