What kinda caliper is it? Single or double pivot? Take the caliper off, clean it, oil the pivots (with 3-in-1 or similar, not WD40 because it doesn't last very long), put it back together, and re-install. It'll only take 30 minutes even if you're not experienced with spannering.
What kinda caliper is it? Single or double pivot? Take the caliper off, clean it, oil the pivots (with 3-in-1 or similar, not WD40 because it doesn't last very long), put it back together, and re-install. It'll only take 30 minutes even if you're not experienced with spannering.