Power Brake Booster (Tandem Diaphragm): Removal

Disconnect battery. Remove master cylinder from booster. Set it aside without disturbing hydraulic lines. It is not necessary to disconnect brake lines, but use care to avoid kinking them. Disconnect manifold vacuum hose from booster check valve.
Under dash, remove stoplight switch connector. Remove switch retaining pin. Slide stoplight switch off brake pedal pin just far enough for outer plate of stoplight switch to clear pin, then remove 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 dash panel.