Earlier this week my right front brake line failed due to abrasion on the brake caliper.

Now that I've replaced both front lines, the system is still acting like there is alot of air inside. I've bled it so much the fluid is very clean coming out at every wheel.

I've been told that when you have a failure, and you push the brake pedal to the floor, you damage the master cylinder? any truth to this??

Thanks in advance.