Are the caliper floating bushes free?
These often sieze with dirt ir rust over time, thus not allowing the caliper to float and centralize the caliper upon releasing the brake, but not stopping the brake from working.
A siezed float bush can keep one pad firmly pushed against the disc giving the effect you discribe.
A good visual sign of this is uneven wear of the brake pads.
Dismantle the caliper slid pin, clean it up lube and reassemble.
This is a very commmon fault not often picked up in the first inspection on both bikes and cars.
To be old and wise, first you must be young and stupid.
Bookmarks