Check the brake fluid level. If the fluid level is below the MIN line on the brake master cylinder reservoir add the required amount of High Performance DOT 3 Brake Fluid C6AZ-19542-AB meeting Ford specification ESA-M6C25-A or DOT 3 equivalent.
Inspect the (A) brake line nuts and the (B) brake master cylinder reservoir for fluid leaks.
Inspect the brake lines and hoses for fluid leaks.