bleed screw

A bleed screw is a device used to create a temporary opening in an otherwise closed hydraulic system, which facilitates the removal of air or another substance from the system by way of pressure and density differences.

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    Brakes Brakes do not work

    Helping a friend on a '79 CJ5 so new to this vehicle; Original everything; Need some guidance on brake system: Brake pedal has no resistance; Took front caliper off and nothing happens when brake pedal pressed; Opened front bleed screw, nothing comes out; Reservoir has some fluid in it; Took a...
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