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Front brake caliper 1077cb750k

77750

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Just changed my front brake pads and rotor resurfaced. My calperpiston won't retract very much upon release of brake lever so brake drags unless a loosen caliper mounting bolts. Help
 
Was everything working OK prior to the latest work performed? May need to do some maintenance / cleanup / lubrication on the caliper / piston. Or maybe the piston is hanging / jammed up?
 
The brake piston does not retract very much when pressure is released. If it's an '77 K7 the caliper mount arm will need readjusted so that the fixed pad has a small bit of clearance against the rotor and the wheel rotates with no drag with brake released.
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Once properly adjusted, if the caliper continues to drag heavily after the brake is applied and released, the caliper may need rebuilt.
 
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