rear brake

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Joined
Jan 3, 2012
Messages
22
Location
portsmouth
having problems with rear brake it locks on when im riding it and dont even have to touch pedel at all has any one had there rear brake start to lock when riding or any one know of a problemyesterday bike got slower and slower stoped and bike would not move undid bleed niple and was ok again to ride just taken apart cannot find any thing wrong with it
 
Piston seized? Might be worth removing the caliper and piston check out the seals make sure they are not damaged at all.
 
You sure you got free play on the master cylinder push rod, sounds like it on all the time and as the hydraulic fluid heats up it's expanding pushing the brakes on more & more. Wouldn't have thought the pistons would have seized if the brake releases when the bleed nipple is undone.
Whip off the lower fairing & check the push rod has about 3mm of movement before it starts pushing on the master cylinder piston.

RSVR028.jpg
 
You sure you got free play on the master cylinder push rod, sounds like it on all the time and as the hydraulic fluid heats up it's expanding pushing the brakes on more & more. Wouldn't have thought the pistons would have seized if the brake releases when the bleed nipple is undone.
Whip off the lower fairing & check the push rod has about 3mm of movement before it starts pushing on the master cylinder piston.

RSVR028.jpg

going to have a look tonite hopfully thats all thats wrong with it .got to get some seals for rear caliper as well as think they may be shot now any one know were i may get some thanks every one for the help
 

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