Brake Booster - Grand Marquis, Ltd Crown Victoria & Town Car: Removal

Disconnect battery and remove master cylinder from booster. Carefully set aside without disturbing hydraulic lines. Disconnect manifold vacuum hose from booster check valve.
Under dash, remove stoplight switch off brake pedal pin just far enough for outer plate of stoplight switch to clear pin. Remove stoplight switch from pin. Avoid damaging switch during removal.
Remove booster-to-dash panel attaching nuts. Slide booster push rod, nylon washers, and bushing off brake pedal pin. Remove booster assembly from dash panel by sliding push rod out through engine side of firewall.