Originally Posted by mrnvgtr
What does it mean to get them turned? How would I know they need to be turned? Sorry for the dumb questions. It's my dd, so I can't just hack in there and hope to figure it out.
As the brakes wear, they create annular grooves (like rings) on the inside of the brake drum. These grooves can affect the wear of the new brake shoes.
The solution is to have the brake drums "turned" so that the inside diameter surface of the drum is restored to a smooth cylindrical surface.
The tool that does this is a "brake drum lathe". Most bigger auto parts shops have one.
A bit of warning---there is a limit as to how much of the inside of the drum that can be cut away safely. It's marked on the drum somewhere. When the drum reaches this dimension, it must be replaced.