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Eumig 810D Rattling Motor Noise

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  • Eumig 810D Rattling Motor Noise

    My Eumig 810D suddenly started making a rattling noise inside the motor. There's no noise (yet) while running in reverse. It rattles again after I shut off the power and it spins down to a stop. What's wrong? How involved a repair is this, or am I better off taking it to a technician?

  • #2
    It sounds like the fan is hitting on something when the motor tilts to forward projection. The fan is located at the bottom of the motor inside the gray aluminum casting.

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    • #3
      The fan had broken at the neck, allowing it to float up and graze the cover

      Click image for larger version

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      • #4
        What is the condition of the plastic motor mounts? If these mounts fail the motor will not sit straight in the fan housing. Once the motor drops down a bit, and you suddenly turn it on, I could see where it would destroy the fan assembly.

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        • #5
          The mounts were intact, but had turned brown and were a bit smooshed. Then they disintegrated as I was putting everything back together.

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          • #6
            Shane is correct, change those motor mounts. If you have acess to a 3d printer you can make a new set easily and just use the old bronze bushing from the disintegrated ones. Or you can order some new ones from Van-Eck in Europe.

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            • #7
              Or the old fashioned was. Brass sheet, drill and file to shape. My old MkS is still running on brass after 20 years and you don't.need a 3D printer

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              • #8
                The best substitute material may be DELRIN AF, which is a dense extremely hard wearing plastic material with some PTFE filler, which results in an extremely low friction coefficient self lubricating bearing. Widely used in military/aerospace applications. I had some Eumig bearings made from this material decades ago and they worked just fine. Mine were fabricated in a mchine shop, but you could buy some in rod or sheet form and do what Lee said - drill and file to shape,

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