Nath79Special
XS650 New Member
Hi, I'm having issues with my rear disk brake seizing on when the system gets hot.
It's not the Calliper as I've already re-done the seals. It's not the fluid as I've replaced it a couple of times, most recently when I re-did the calliper piston seal.
I've narrowed the problem down to the Master cylinder. I think fluid is coming from the reservoir but not returning to the reservoir properly, almost like the master cylinder piston is acting like a non-return valve. that seams unlikely though, it would be hard for it to get stuck in a position like that, and when you blead off the systems bit or let it cool down it goes back to working ok.
Anyone seen this happen or have any ideas?
It's not the Calliper as I've already re-done the seals. It's not the fluid as I've replaced it a couple of times, most recently when I re-did the calliper piston seal.
I've narrowed the problem down to the Master cylinder. I think fluid is coming from the reservoir but not returning to the reservoir properly, almost like the master cylinder piston is acting like a non-return valve. that seams unlikely though, it would be hard for it to get stuck in a position like that, and when you blead off the systems bit or let it cool down it goes back to working ok.
Anyone seen this happen or have any ideas?