Question about Metabo WE14-150 Quick Angle Grinder

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Just replaced the brushes on a WE14 150 Quick 6 Grinder and sparks now come from the brushes

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  • Anonymous Mar 25, 2014

    how do you replace the brush set

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  • Master
  • 5,660 Answers

From my own experience.

Are the strips of the commutator smooth and flat?
(Not to insult you. The part of the armature that the brushes ride on)

If they aren't, the brushes will bounce up and down.
I put one end of the armature in a drill, and have a helper run the drill. The other end of the armature rests in the front bearing of the grinder head, which is fastened down. (To a bench) Then I use a medium tooth, (B astard) file to dress the commutator bars flat.

I also put medium grade sandpaper in-between the brushes, and the commutator surface to dress an arc on the brushes. (Turn the armature by hand while keeping the sandpaper in place)
Brushes come with a flat surface. Putting a radius on them to fit the arc of the commutator, gives them a good contact surface to start from.

Be sure the springs are putting pressure on the brushes. Sometimes the brush mounts need to be cleaned, or the brush will not slide through the mount like it should. The brush will again, 'Dance' on the commutator. (Bounce up and down)

Posted on Sep 06, 2009

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brewerstool
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SOURCE: Carbon brush sizes

They are exactly the same brushes. Part number 316041640 .

Posted on Sep 15, 2009

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Carbon brush sizes


They are exactly the same brushes. Part number 316041640 .

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Just replaced the brushes in a Metabo WE14-150Quick Angle grinder


when you replaced the brushes did you notice the tool throwing sparks? Generally when I work on these after replacing the brushes I have to clean the commutator to seat the new set. You could also have other problems, e.g. bad brush holder (did you replace as assembly or just brush) Let me know what happened to the first set and if when you plug in and try it does it come up to full speed.

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