Prusa Research MMU3 Manual Del Usuario página 41

PASO 3 Selector assembly: Magnetic ball
Insert the magnet into the marked opening on the selector. Push it in until it is flush
with the surrounding surface.
The orientation of the magnet doesn't matter.
Insert the magnetic ball into the marked hole on the top of the selector.
The steel ball should be attracted to the magnet below and stay in place. If not,
verify you are using a correct ball.
There is an opening on the side of the selector through which you can observe
the ball's position.
The selector ball from the older MMU2S can't be re-used as it is non-magnetic.
Use only the supplied MMU3 magnetic version.
PASO 4 Selector assembly: Trapeze nut parts preparation
5. Montaje del selector
Ensamblaje Original Prusa MMU3
For the following steps, please
prepare:
Trapeze nut (1x)
In case you're assembling the
unit from scratch, the nut is
inside the Motor kit box,
attached to the selector motor.
M3n nut (1x)
M3nS nut (1x)
M3x10 screw (2x)
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