audilad9

Thanks gii I should have mentioned that leaving it to cool down for say five minutes, the pedal has good travel again and works perfectly for a while. I shall give a thorough strip, clean and inspection now that I have some ideas of things to look for. Cheers

Possibly a lot of riding around on the back wheel covering the brake I will look at all possible causes and report back. Thanks

Thanks so much for the replies guys. I shall give it a bleed through tomorrow, the fluid sounds like a probable cause as I have been power washing it quite vigorously lately and the pedal travel was fine before, its not been adjusted and pads are well clear of disc at cold. I'll report tomorrow how it goes. Thanks

Hello all, new on here, and hope someone can help My bike is a 2010 250 pro. The problem appears to arise after a bit of time say 10 minutes of riding, I hear the rear brake start to squeal as it begins to bind and the pedal hard. I obviously stop at this point and the brake becomes solid, locking the wheel, the disc hot to the touch. The rear pads appear ok, I have had them out to check and clean, caliper pistons appear free enough. My guess is in the pedal/ master cylinder, it goes solid, ie no pedal travel. Fluid level is ok and was working fine before with nothing done to upset anything. Any ideas anyone ? Thanks.