Broken copper tube on AC, thanks to Dempster Hwy

You will also find cracked lines on occasion simply by the way they are mounted in the unit and depending on where the crack is, it is possible at times to repair the line and recharge the unit. It is not commonly done, however, and manufacturers' position at that point is they simply need to be replaced.

I do not think this type of problem is a common occurrence although rough roads take their toll on, I guess, just about every part of an RV. No upside to rough roads.