Newbie Question- How do you change the bruches on a motor? I have the general idea. The motor I have is a Trinity, I can see the brushes without taking it apart. Do I just remove the spring and pull the brushes out? I have heard you should mark somthing when taking the motor apart aswell...can sombody shed some light on this for me? And how often should I replace the brushes?
Thanks in advance.

Chris