Brake System Flush | 48K Mile Service - Part 3

[Grumpy Goat]

Nice video GG. Interestingly, the BMW Service manual for the R1200RS doesn't say anything about flushing the pump to clear air bubbles from the pressure modulator. After watching the video I connected my GS-911 to my bike to see the GS-911 instructions for myself. I'm a little mystified why the GS-911 people think this is necessary, and BMW does not. I remember reading about the complexity of bleeding the older BMW ABS systems, and I have to wonder if the GS-911 people are suggesting this be done only because their device has the capability.

Yes, I too noticed that BMW made no mention of including the ABS pump in the flushing process and that always made me wonder that if only the 3 lines were bled / flushed then perhaps there is some old fluid that could remain in the ABS pump. Without knowing the plumbing I think I feel better knowing that per the GS-911 way all components are bled in some way. Maybe that is why I was seeing bubbles after the first flush.