adjusting brake pedal push rod?

I have an old death onion in my 62 valiant. The brake pedal has more dead travel than it should. The brakes all work and everything, but a friend suggested that the pushrod might need adjusting. Is this a possibility? anyone got instructions?
Have you checked the bolt that holds it to the brake petal?...thats where I'd start...its not a heim joint the eye of the pushrod just rides on the bolt