Mopar 5159992AA Brake Mastr Cylinder

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Bench bleed the new master cylinder before installing it. Attach a pair of master cylinder bleeder tubes to the outlet ports of the master cylinder. Fill the reservoir with brake fluid of the recommended type. Slowly push the pistons into the master cylinder - air will be expelled from the pressure chambers and into the reservoir. Repeat the procedure until no more air bubbles are present. Remove the bleed tubes, one at a time, and install plugs in the open ports to prevent fluid leakage and air from entering. Install the reservoir cap. Install the master cylinder over the studs on the power brake booster and tighten the attaching nuts only finger tight at this time. Thread the brake line fittings into the master cylinder. Fully tighten the mounting nuts, then the brake line fittings. Connect the brake fluid switch electrical connector. Fill the master cylinder reservoir with fluid, then bleed the master cylinder and the brake system. On Durango models with ESP, replace the fuse and relay box tray and the fender splash shield. Test the operation of the brake system carefully before placing the vehicle into normal service.