Tools Silicone Caulking
New Brushes
Phillips Screwdriver
Utility Knife
Step 1 Unplug the Unit!
Step 2 Remove lid screws. (RIGHT to tighten, LEFT to loosen)
Using a utility knife cut the silicone seal between the unit and lid. ALWAYS CUT AWAY FROM YOUR BODY! Peel back foam and remove.
Step 3
Loosen the two screws holding the metal brush housing enough to allow the brush to lift upward and slide out. NOTE: It is not necessary to completely remove the screws!
Step 4 Gently lift the metal brush upward and pull it out.
Step 5
Using your new brushes locate the brush pin and the motor slot.
Step 6 Follow this step very carefully. If brush pin is inserted in the motor slot incorrectly, the brush will not cradle the armature correctly. The brush will raise up and the carbon will scratch the armature destroying your motor! Slide the new brush in with the brush pin facing downward. The brush pin should be inside the motor slot. The brush should lock into place.
Step 7
Tighten both screws. Be careful not to over tighten!
Step 8 Repeat Steps 3 - 7 To Change The Other Brush
Step 9
Make sure to plug in your unit and test run the motor before replacing the lid. The new brushes may spark more than normal until they wear in. Turn it on and off a couple of times quickly to give the carbon a chance to cradle around the armature. If you have a variable speed unit, turn it on low for a few minutes to give the carbon a chance to cradle around the armature.
Step 10
Gently replace foam to its original position.
Step 11
Replace the lid. Silicone may squeeze out, this is normal. Start each screw, do not tighten until all screws are started. If not, you will not be able to get the last couple of screws in.
Step 12
Let Silicone Dry. It is important that you allow your unit to sit overnight so that the silicone can dry. If silicone is not allowed to dry properly, the lid may leak.
Step 13
Using your utility knife cut away the excess silicone.
Let us know how this installation procedure
worked for you!
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