Thanks for finally letting me know that at least you tried it ThermalSun I only posted #18 in response to #16 as thought i may have been writing in invisible ink again.
They're cheating there are 2 of them, no wonder the service charges are a little eyewatering.....and the clip has no music or subtitles. A similar ridiculous routing for the brake line similar to my Sons Aprilia which we vacuum bled in the end. Having tried all the other methods it was the least painful and all for £12 outlay.
There is this YT vid from a bloke in the UK and his bike is a M1200R. Seems pretty sensible and straightforward...don't think there is any need to take the rear wheel off. Will have a go this weekend, without buying a new master cylinder. In fairness, I already tried bleeding but without removing the brake caliper. Probably an error on my part. Watch this space.
I haven’t watched the YT vid but isn’t the issue with the affected models down to the brake lines running very close to the exhaust and there being insufficient heat protection? The consequence of this is the fluid is super hot before the brake is applied, applying the brake heats it further, it boils, air is released and this air gets trapped in the lines. Is it necessary to change the master cylinder? Isn’t the TSB to change the position of the lines and to put better heat shielding? Using a higher boiling point brake fluid such as Motul 660 or 700 or Castrol SRF would also help, as would more frequent, perhaps annual, fluid changes.
And no one noticed they move the brake pedal several times (10) whilst the bleed nipple is open. One would have thought that would just suck the old fluid and/or air back in rather than expunge it and replace it with new from the reservoir.
One of the solutions I've seen involves putting an insulating material around the brake line to stop the fluid getting hot, if I can find it I'll post it.
I did but I wasn’t so sure that I haven’t been doing it wrong all these years………. I much prefer how some Mountain bikes brakes are bled.
this is by far, the best way forward, only in my opinion of course. I can understand why braided lines were introduced on motorbikes in general, and overall it's a good move, but they actually make things worse in the case of the rear brake pipe run on our hot Ducatis, only my opinion again of course.
I will have a search tomorrow for the thread on here where someone has come up with a "heat repelling sheath" and I think even posted about favourable improvements as a result, at least two people on that thread have done exactly this.
Well, my bro-in-law and I bled the rear brake with some motul 5.1, and all seems good. Zip tied the brake lever down overnight and this morning it feels like new again. Hardest part was removing the caliper bolts which hadn't been touched for a while, I suspect. Let's see how long it lasts.
Mine did it and my mechanic got it up on the ramp and bled it properly. It works again fine now. He said he had to remove the calipers to do it properly.
