My poor brakes, fixed!!! Thanks Larry!!!!!!!!!
I had one of those BMW's from the early 2000's with whizzy power brakes and 9 bleeders I think. So the design of the ST's brakes didn't make me blink. But my ST brakes turned into a huge project for me. I'm so grateful for Larry's help. Without him I expect I would have removed the calipers from the bike and completely rebuilt them, replacing every part I could. That was not necessary, but that's the way it would have gone without Larry's help.
My SMC was not releasing the rear brake like it should, which I did not know until Larry told me how to test the SMC. I replaced the SMC and the rear brake bracket which was damaged just like Larry told me it would be. Also replaced pads, pad pins and serviced the disc rivets.
Replacing pads unexpectedly did not go well. I have always been able to push the brake pistons back with only my fingers on every bike I've owned. The ST's brake pistons would not move at all by hand. I was confused. Larry coached me to extend the pistons and remove the ring-around-the-collar dirt on the pistons using his very simple paracord method. I couldn't believe that a small amount of crud would freeze the pistons, but they all moved perfectly by hand afterwards. Thanks Larry.
I used the very simple, inexpensive Motion Pro bleed tool. Larry said not to use anything else like a suction pump or power bleeder style push bleeder like I was going to use. He was absolutely right. The Motion Pro tool is a bargain and it worked darn well.
Over more than a week I bled my bike's 7 bleeders two times each bleed for 4 rounds. That was 8 bleeds on each bleeder total. No brakes.
After much head scratching I discovered my bleeders were bleeding well but not sealing afterwards. 4 or 5 of the bleeders had tiny leaks. When I pulled them they were extremely dirty. I removed the plumbers tape, cleaned them with a wire brush and put them back in. After the cleaning and a couple more rounds of bleeding, no change. Still did not seal. No brakes.
I gave up on those bleeders and ordered replacements. Larry suggested I use thread sealant, not plumbers tape, on the bleeders. I did. Wow, success on the very first bleed with new bleeders and sealant (and new SMC, rear brake bracket, pads, pad pins, and disc rivet service).
And just that easy, fantastic ST brakes! Thanks Larry!