G oog le Buell 1125R Forum | Login/out | Topics | Search | Custodians | Register | Edit Profile


Buell Forum » 1125R Superbike Board » Front Brake Bleeding « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Evelle
Posted on Tuesday, June 16, 2020 - 12:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a 09 1125R, I replaced the front pads and now I cannot get it to bleed. I've tried, like the service manual says, I've tried the squeeze open, close, release method and tried to gravity feed the system and nothing works. Has my master cylinder just decided to randomly take a dump or front caliper, what is most likely the first to go? I appreciate any help that can be given, replacement part suggestions or any insight on the problem.
Top of pagePrevious messageNext messageBottom of page Link to this message

Willmrx
Posted on Tuesday, June 16, 2020 - 01:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If I had to guess, you most likely have dirt in one of the ports in the master cylinder. One is a tiny hole, and doesn't take much to restrict it. The other thing you may try is a Mighty Vac or some sort of vacuum to draw the fluid to the caliper. Again just a guess.
.kmjhtftfgtioctfxhjkbnk


(Message edited by willmrx on June 16, 2020)
Top of pagePrevious messageNext messageBottom of page Link to this message

Stevel
Posted on Tuesday, June 16, 2020 - 02:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A not so common issue is a weak return spring. This prevents the piston from uncovering the inlet port on its return. Remove the spring, stretch and reinstall. Then order a new one.
Top of pagePrevious messageNext messageBottom of page Link to this message

Terrys1980
Posted on Tuesday, June 16, 2020 - 09:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've always preferred to push fluid up from caliper to master with a syringe.

brake
Top of pagePrevious messageNext messageBottom of page Link to this message

Evelle
Posted on Tuesday, June 16, 2020 - 03:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for the info. Seems like the bottom 4 pistons aren't doing much. I'll give the syringe a shot, maybe there is a pocket of air blocking the flow of fluid. I can tell the intake port is clear, not sure about the compensating port, I'll see what the syringe does, hopefully if there is anything it will clear out so I can remove it. Thanks again.
Top of pagePrevious messageNext messageBottom of page Link to this message

Blake
Posted on Tuesday, June 16, 2020 - 04:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I agree with Terry. Ever since Henrik taught us how to efficiently bleed the Buell brakes, I've used the syringe method on every brake and hydraulic clutch since. It's ingenious.

Side note: Can't stop looking at the photo of Terry's super bike in his profile pic. How the 1190RX is supposed to look, with a great helmet only adding to the appeal. Nice bike Terry.
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Password:
E-mail:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration