Sir, Please to request your thought and.

Hi Sir, Please to request your thought and recommendation regarding this matter. I am new bee's in car fixing and learning it in the hard way. Here is my delima. Me and my budy just replace a wheel bearing and tire rod of my truck (left side tire). Then just one drive my breakline leaks. Where did I do wrong. Did I did something wrong that causes that.
What are the possible reason of that. Help and thanks a lot for your thought and shared experienced.