On 2005-02-09 07:05:30 -0800, email@example.com said:
Usually it's rust or crud that is built up in the caliper sliding
hardware. Disassembling and cleaning and lubricating and reassembling
may fix it.
On rare occasions this can also be caused by hydraulic issues like a
collapsed hose. Usually this would be pretty severe though...
Stuck piston inside the brake caliper - or a blocked brake hose to that
brake. One can test the latter by "bleeding" the brake caliper on that
wheel. If copious amounts of brake fluid come from the bleed screw on
light brake application then the brake hose is OK and the caliper ought
to be replaced or rebuilt. If not then the hose must be replaced so the
brake releases after a stop.
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