Prusa Research MMU3 Manual Del Usuario página 34

PASO 9 Coupler assembly
Before we install the Coupler onto the Idler, Take a look at both parts. There are
four screw openings that must line-up.
Orient the coupler so that the two grub screws are oriented exactly as in the
picture.
Add the Coupler onto the side of the Idler in a way so that all four screw openings
line up.
Before proceeding, make sure the M4 grub screws are oriented as seen in the
picture.
Fix the Coupler to the Idler using four M3x10 screws.
PASO 10 Final check
Antes de proceder, comprueba lo siguiente:
Todos los tornillos M3x10 están apretados.
The grub screws are oriented properly and not protruding into the center opening in
the coupler.
The grub screw orientation is important so that the grub screws remain accessible
even after the Idler is installed inside the MMU unit.
Los cinco rodamientos son capaces de girar.
El sexto rodamiento está a ras con la superficie.
34
4. Montaje del cuerpo del tensor
Ensamblaje Original Prusa MMU3