The brake system on a 1955 Ford was a single circuit hydraulic brake system. In a single line system, if a leak occurred the brakes on all four wheels would fail. Stopping ability in such a case depended on how bad the leak was and how much brake fluid remained. Once the fluid is gone so are the brakes. The dual master cylinder arrived in the late sixties and divided the brake system into two separate hydraulic circuits, the front and rear. If a leak occurs in one circuit the other circuit stops the car.
Things You’ll Need
Safety glasses, Brake lines, Line wrenches, Brass double flare unions, Dual master cylinder