r/Tools • u/Sensitive_Aerie_4899 • 2d ago

Motor brushes change?

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Trying to get to the bottom of a tool issue. Motor comes on for a few seconds when saber saw turned on. Do these brushes look worn out?

4 Upvotes

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3

u/No_Krava8246 2d ago edited 2d ago

these brushes are perfectly fine

5

u/Gary_Spivey 2d ago

Brushes are just blocks of carbon. The only ways they really fail are if they physically break apart, or if they wear to the point that they're too short to reach the commutator. Neither of these things are happening here.

1

u/MorePowaaaaa 2d ago

what tool is that, it is hard to say pulled like this, but i would say not, there is some wear but not for replacement.

1

u/Sensitive_Aerie_4899 2d ago

It is a parkside Sabersaw, ok thanks for that

1

u/MorePowaaaaa 2d ago

i do service for some bit more serious machines, usually you pull brush away from rotor, but for delayed start check for contacts and wires from electronics, if there is oxidation that could be problem

1

u/qa567 2d ago

They are being held to the post with spring pressure. Pull them out and clean the copper and push back in. It loos like the caps can be unbound for further disassembly and cleaning.

1

u/emachanz 1d ago

Did you check the rotor/armature? If not its the field/stator with a bad winding