Motorcycle Repair: 1981 honda cb750 {brake problem}, 1981 honda cb750, ring groove

Question
i have a  honda an its seems  sometimes the brakes lock up after riding it an if i  let it sit to long in the cold ive tried heating up the pads to release, it work a lil but not enough i was wondering what i could  do so the brakes work normal i was thinking about bleeding them but i dotn  know how to an im not sure if that would work

Answer
Jeff, I'm afraid bleeding them won't help.  You need to take them apart and clean them.  There's a varnish that forms inside the o-ring groove that closes up the clearance pinching the o-ring hard against the piston so it can't retract.  You have to pull the o-ring out and then take a bent and flattened nail or something and scrape all of the varnish out.  Just be careful not to damage the groove or it will leak.  

Regards
Rich