How to Replace the Armature on a Dremel 395 Moto Tool

Remember to find the exact armature for your Dremel tool by visiting our Dremel spare parts page.   Removing the Armature

1. Remove the front cap

Begin the repair by unscrewing the cap at the front of your tool.

2. Remove the brushes

Use a flat-head screwdriver to remove the two brushes from the side of the tool.

3. Remove the housing screws

Now unscrew the four screw that secure the two housings.

4. Remove the motor and switch assembly

Now you can pull the motor and switch assembly away from your tool.

The armature is nestled inside the black field.  

5. Remove the armature

Slide the armature out of the field. You should be able to just pull it away from the tool.

6. Transfer the collett and bit

Your old armature includes the attachment shaft. Unscrew the collett and bit from the old armature and transfer it to the end of the new one.

[Back to Top]   Installing the Armature

1. Combine the motor assembly parts

Slide the armature back into the motor field.

2. Re-install the lock pin and spring

When you broke down the multi-tool, chances are a small lock pin and spring fell out.

They nestle right into the housing. Put them in place.

3. Re-install the armature

Now set the armature back into place in the housing.

Check the bearings and make sure they line up in the housing.  

4. Route the wires

Route the wires in the casing so they won't get pinched when you combine the two halves later.

5. Secure the housings

 Now you can set the other half of the housing back into place and fasten the screws.

6. Secure the brushes

Use your flat-head screwdriver to re-install the two brushes.

7. Re-install the front cap

And now you can secure the front cap to finalize the repair.

  [Back to Top]   Conclusion And that's how simple it is to replace the armature in your Dremel tool. This repair will save you loads of time and money compared to a repair shop, and you'll learn a bit about how your tool works, too! Remember, you can find all the spare parts you need for your power tool repairs here.   [Back to Top]
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