Despite their hard-working nature and their devotion to your power tool and its performance, the carbon brushes in your Dewalt drill will eventually require replacement. It is a sad day for any craftsmen when he realizes the sluggish performance of his drill, but brush replacements are really quite simple, and a new set of brushes will revive your power drill to the prime of its performance.
To change the brushes in your Dewalt drill, we'll begin with a few preliminary and safety measures (these things may seem self-explanatory, but, if I have learned anything in this business, it is that nothing is self-explanatory and everything has the potential to be forgotten). First, if you have the drill's manual, read it. These are not simply a waste of resources and will contain valuable information about the procedure you are about to take-on. Second, it is very important that you have the correct replacement brushes for your specific drill. as each tool and each brush is different, you must have the brushes that are specifically designed for your specific tool. Lastly, it is quite important that you ensure the tool is, for all intensive purposes, off and entirely disengaged. Take off the battery, unplug it, put any "on" buttons in the "off" position, and so forth.
After preliminaries and precautions, begin by either opening-up the tools housing or simply unscrewing the drill's end cap (this is simply a dome at the back of the tool (part of the housing) which will sometimes extend further down into the tool's handle) which will plainly reveal the brushes. In any disassembly process though, it is wise to keep your parts and screws as organized as possible - anything your remove will have to later be replaced. If you have to open the housing, remove the top of the clamshell and locate the tool's brushes. They may be a bit elusive at first, perhaps hidden by the motor, but should simply be at the rear of your drill. The brushes, which are small carbon blocks that are pressed up against the drill's armature, will have been comfortably slid into guide sleeves on either side of the drill's motor. If you need only remove the end cap, the brushes should be immediately accessible.
Upon revealing the brushes, carefully remove their brush caps, tug them, the old ones, out of their guide sleeves, and gently slide the new brushes in in the same orientation the old old ones were removed. Ensure the new brush is making complete contact with the armature's commutator and its pretty much as simple as that. Put everything back together tightly ensuring that all things have found their proper space. When all is put properly back together, engage the drill and give it a little test drive; test each capability of the drill - run it in reverse or change the gears, perhaps even drill a hole or a screw to feel out all its functions. If all is in working order, then your procedure is complete and you have successfully performed brush-surgery on your power drill. If, per chance, the repair does not go so smoothly, walk through the procedure again to ensure you haven't made a fixable mistake. If no mistakes come jumping out at you, you should take the drill to a Dewalt service center for a more thorough diagnosis.
After all that, it seems changing the brushes in a Dewalt drill is a relatively simple process, and one that's beneficial to you in several different ways. You see, brush replacements keep your tool performing powerfully, they save you the cost of paying someone else to do it for you, the cost of investing in a new drill, and it's a really simple way to maintain the healthy relationship with your power drill that all craftsmen strive for.
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