It seems the time has come to replace the brushes in your Bosch drill. As luck, or fate, or reason would have it though, this is a surprisingly simple procedure. With just a few short steps, you should have those brushes out and in and working in no more than a flash.

The first of these steps may seem a bit self-explanatory, but, as we all know, a simple mistake can take hold of anyone at anytime; I figure it's much better to be safe than sorry. So, begin with reading your drill's manual. This is more important than you might think; the manual will contain helpful information about the drill's brushes and other components as well. You need also ensure that your replacement brushes are the exact type built for your specific drill; any random drill brush will not perform in your model. Lastly, triple check that your drill is totally disengaged.

From this point you need to locate the brushes on your drill; they should be at the back of the tool. To expose them you will have either an end cap or brush covers. Each are a part of the housing (usually a different color) that can be removed without opening-up the entire drill housing. The end cap will be a dome-shaped piece at the very back of the drill, and the brush covers will be located (also at the back) on either side of the tool. If the drill does not have either, you will need to entirely open-up the housing, which is, essentially, no more difficult, but the brushes may be a bit more hidden. They will, however, be at the back of the motor at the very back of the tool.

Once you have access to the brushes, simply slide them out of their guide sleeves and replace them with the new brushes. Be sure to replace the new brushes in the exact orientation the old ones were removed. Also be sure that the brushes are making complete contact with armature. And just like that, you are, essentailly, finished. Well, almost, I suppose.

Reassemble the tool carefully and precisely to ensure everything goes back together correctly and give the tool a quick whirl testing the drill's functions to make sure all is well. If by some terrible chance all has not gone well, make sure that simple mistake hasn't grabbed hold of you and retrace your steps. If no mistake becomes apparent, take the the drill to a Bosch factory authorized service center for a more complete inspection.

And that's it; remember your manual and to always be focused and you should champion that Bosch drill brush replacement in no time.