Hi, I have a 300W electric saw (small), and the motor carbon brushes start sparking "like crazy" whenever I turn it on. First, I'd like to know what can cause a spark (short circuit, simple friction between brush and metal???). The brushes are really easy to take out, so I did and they look fine, they don't look burn't or destroyed. What I don't know how it is is the commutator (or armature). This is basically my motor:
Should I sandpaper the carbon brushes to remove a bad "coat"? (there's still a lot to go, and the spring is strong and nice)
May be should I sandpaper the commutator and make it shiny and uniform?
Could it be an impossible to solve problem?
Should I sandpaper the carbon brushes to remove a bad "coat"? (there's still a lot to go, and the spring is strong and nice)
May be should I sandpaper the commutator and make it shiny and uniform?
Could it be an impossible to solve problem?