The problem of replacing carbon brush in electric drill
I understand this is your two (/ hammer drill). It should have a top plate, the top plate top switch and the top two will appear different work (hammer / drill), your problem is to find out where the top sheet. Without it, it can only be used in one state of work.
As long as you can find the right carbon brush, change one or the other pair, if the other one is intact and wear little, just change it.
The problem of replacing carbon brush in electric drill:In fact, electric brush replacement is very simple, the two sides in the middle of the drill, each have a word mouth screw, as long as the screw off, remove the exhausted carbon brush, the new brush inside, tighten the screws on the line. However, it should be noted that the choice of carbon brush must be the same specifications as the drill, or not put in, that is too small, poor contact, resulting in an electric drill does not work.
