AutoZone Product & HowTo Info | | Brake Bleeder Screw For Disc Brakes

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    Brake Bleeder Screw For Disc Brakes

    Brake Bleeder Screw For Disc Brakes Operation:

    A small, hollow screw or valve found at drum-brake wheel cylinders, in disc brake calipers, and adjacent to the outlet ports of some master cylinders. It is opened to release pressure and to bleed air and fluid from the hydraulic system.

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