I have an '03 Honda CB500 with a Brembo 2-pot caliper up front. It's stuck/seized, I'm not sure, but only half-way on. I have the caliper off the forks and can't push the pistons back in.Sorry for the vague description, but any help would be appreciated.Most importantly, is it even possible for me to fix it?Thanks.
most likely bad brake caliber can loosen brak ebleeder maybe push it piston back by prying on brake pads or use a c clamp or bug pair of pliars if that dont work best you just replace it
probably need to rebuild the caliper, meaning tear apart, clean up everything inside the caliper, replace the seals, reassemble, hope for the best.
Gunk builds up under the seals making them grab tighter against the pistons. Remove the seals and scrape the seal grooves clean. Install new seals and the pistons if they have surface rust or are pitted. With the caliper off the bike, pump the brake lever to push the pistons out of the caliper.
sounds to me like the seals are worn and by replacing them will make the pistons slide even again, but to get it loose again you will have to force the piston and cylinder back in line before you can even remove it, i would invest in a brass hammer it is less likely to harm any parts. you may want to also invest in a hone for your cylinder wall if there are any scuff marks on the walls be sure to check them real close if it looks real bad make it smooth again or replace it. hope this helps...
according to what you have defined, i could use the previous caliper for a doorstop and get carry of a suitable rebuilt caliper or a good used one. regardless of each thing, the nicest finding bike isn't well worth to a lot if it won't end. And on condition that the bike has in ordinary terms been ridden sporadically considering that 1994, the rust buildup interior that caliper will, must you get the piston freed up, tear up the piston seal and be a relentless source of leaks. And once you're at it, i could look at or have a qualified bike mechanic look at the grasp cylinder and rubber brake hose. The hose could look effective from the exterior, yet hoses will swell up internally from loss of use or appropriate maintenance (typical fluid differences) and which will avert the brakes from working suitable. Brake fluid, extraordinarily DOT 3 spec'd fluid, has an inclination to take up moisture. greater beneficial than probably the fluid hasn't been replaced in 2 an prolonged time. it is your neck, so it truly is one section i would not do a million/2 way.
