1982 900ss - Brembo PS15 Bubbles!
Posted: Tue Jul 07, 2015 12:39 am
Hi all
My bike was restored over several years and then sat for 5 years after it was largely completed. As part of readying it for some road use, I have flushed fresh brake fluid through and bled the brakes front and rear.
Front worked fine, but the rear is a bit off. There is no air going through the system, but bubbles come up in the reservoir no matter what I do. They are coming out of the bottom of the two intakes in the cup. It's only a few tiny ones, but I can make it happen over and over again, no matter how much fluid is put through and no matter how I do the bleeding.
I'm aware that fluid can absorb water over time and I'm thinking this might have caused damage in the barrel.. perhaps the seal is not tight. During the initial flush and bleed, plenty of what I assume was assembly grease came up through the reservoir (showing as a cloudiness in the fluid). I flushed until it cleared and so now I've just got this bubble issue.
Has anyone had similar experience? Pics and video below.
This is the part
http://1drv.ms/1J1Tgox
These are the bubbles
http://1drv.ms/1J1Thcc
And here's me showing it happening on video
https://www.youtube.com/watch?v=LcgZrQIuMPw
My bike was restored over several years and then sat for 5 years after it was largely completed. As part of readying it for some road use, I have flushed fresh brake fluid through and bled the brakes front and rear.
Front worked fine, but the rear is a bit off. There is no air going through the system, but bubbles come up in the reservoir no matter what I do. They are coming out of the bottom of the two intakes in the cup. It's only a few tiny ones, but I can make it happen over and over again, no matter how much fluid is put through and no matter how I do the bleeding.
I'm aware that fluid can absorb water over time and I'm thinking this might have caused damage in the barrel.. perhaps the seal is not tight. During the initial flush and bleed, plenty of what I assume was assembly grease came up through the reservoir (showing as a cloudiness in the fluid). I flushed until it cleared and so now I've just got this bubble issue.
Has anyone had similar experience? Pics and video below.
This is the part
http://1drv.ms/1J1Tgox
These are the bubbles
http://1drv.ms/1J1Thcc
And here's me showing it happening on video
https://www.youtube.com/watch?v=LcgZrQIuMPw