I have bled this brake several times following different methods. Last time I followed the SRAM official video (https://youtu.be/nqdp7a7FXe8?is=ZfdULSWR5oaCbBaW)
Is my lever broken, the whole brake or I just need to learn to bleed it properly?
Thanks folks!
by charlimann
3 Comments
Time for a rebuild id say!
It’s the master cylinder. On that brake it’s a known issue that the master cylinder swells and starts causing that issue it will probably slowly keep getting worse until it won’t return at all. It’s an easy rebuild though w/ a new master cylinder.
These look like guide v1s. I rebuilt a pair of guide ultimates with a similar issue.
The plastic piston in the brake lever swells and rubs on the metal bore it sits in. Swapping out the piston seems to be the best solution although some folks get away with sanding it down.
Lots of videos online show the process. Biggest PITA is a small retaining clip on the non-ultimate versions.