Braun Multimix maintain gearing
Chris and 2 other contributors
Last updated on Apr 13, 2025
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Introduction
Go to step 1 ↓Symptom: the Multimix is running fine without load but it can easily be stopped by hand and a gentle squeaking sound is noticeable.
The cause for this is most likely a broken sprocket on the motor shaft.
To repair this, either a new set of wheels can be installed or the main sprocket can be tried to be glued together.
For the repair, you can either order a new set of gears for the gearbox or try to glue the gear.
Tools required:
Plastic spatula
Thin slotted screwdriver
Philips #2, PH2 screwdriver
What you need
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Put the device head over
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Lift the cover on the rear end (maybe add another spudge to lift a bit more)
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Push the cover to the rear end (cord inlet)
Ask FixBot
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Lift from the side of the cover and remove cover.
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Remove PH2 screw
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With one or more spudgers lift the back cover slightly
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With a small screwdriver push in the middle of the cover to release the nose (see pic 3)
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Release the retainer tabs around the casing
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Best is to begin on the underside of the device, looking in from behind you can see the retainer tab and release it with a small screwdriver or spudger.
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In picture 3 you can see all retainer locations.
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After opening the case, remove the motor and electronics from the casing. It might be helpful to press the release button (green part).
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To remove the release button, push down till retainer nose is free and the button can be pushed away from the motor.
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Remove the 3 T10 screws and release the 3 retainer tabs.
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Hold the motor with the gearing on top and lift the white enclosure.
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Check gears and replace if needed.
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In my case the sprocket on the motor shaft was broken along a tooth. Under load it lost contact and the motor could turn without the gears moving. I tried fixing it by glueing with some 2K epoxy.
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When assembling the gear set, make sure that the two large gears – which support the beaters – are positioned so that the beaters are offset from each other. The most accurate way to do this is with the beaters temporarily inserted.
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Follow the instructions in reverse order to reassemble the device
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