⬢Torx TX10 key

⬢Torx TX6 key

⬢Torx TX8 key

⬢Llave Allen de 2.5 mm

⬢Universal wrench

⬢Nose pliers

⬢Side cutters recommended for cutting zip ties

⬢Prusa lubricant (1x) supplied with your printer

⬢PG-assembly-adapter (1x)

The following step is only necessary if you have a filament loaded in the current toolhead.

⬢Unload the filament from the hotend. On the screen, navigate to Filament -> Unload Filament and select the tool, you want to working on.

⬢Remove the filament from the hotend. It is not necessary to completely remove it from the printer. Just a few centimeters (inches) above the extruder.

⬢Cool down the printer to room temperature. On the screen, navigate to Preheat -> Cooldown.

⬢On the printer screen, navigate to Control -> Pick/Park Tool -> Park Current Tool.

⬢Turn the power switch OFF (symbol "O").

⬢From the rear side of the printer, unplug the PSU cable.

⬢On the selected toolhead you want to work on:

⬢On the selected toolhead you want to work on:

⬢Using a T10 screwdriver, remove the M3x30 screw holding the fan-shield.

⬢Turn the nextruder with the print fan facing up.

⬢Remove the M3x8rt screws from the tool-changer using a T10 screwdriver..

⬢Unplug the toolchanger cable. Press the safety latch while disconnecting the connector.

⬢Remove the toolchanger from the Nextruder.

⬢Loosen the M3x16 screw, just a few turns are enough to release the dwarf-cover-door. No need to removing the screw completely.

⬢Open the dwarf-cover-door widely.

⬢Remove two M3x20rT screws from the heatsink fan using a T10 screwdriver.

⬢Push the idler-swivel upward.

⬢Pull the idler-lever downward in order to release tension on the gearbox.

⬢Fully loosen three M3x25 screws from the printed gearbox cover. Keep the screws in the assembly, don't remove them completely.

⬢Carefully slide the gearbox assembly off. It is necessary to remove the entire assembly in one piece. This means PG-cover (top plastic cover), PG-ring (brass ring), PG-assembly (metal gears), and main-plate (bottom plastic plate), all joined by M3x25 screws.

⬢Set the gearbox assembly and the extruder motor aside.

⬢Unplug the hotend thermistor cable from the Dwarf board. Press the safety latch while disconnecting the connector.

⬢Unplug the hotend heater cable from the Dwarf board. Press the safety latch while disconnecting the connector.

⬢With a Torx TX 8 key loosen the grub screw in the extruder. Do not remove the screw completely. A few turns are enough to release the hotend assembly in the heatsink.

⬢Carefully pull the hotend assembly out of the heatsink.

⬢At the same time pull the disconnected hotend cables from below the heatsink.

⬢Unplug all remaining cables from the Dwarf board. Press the safety latch while disconnecting each connector.

⬢Remove the heatsink assembly and set it aside.

⬢Remove the two M3x10 screws from the heatsink with a 2.5 mm Allen key.

⬢Separate the heatsink and the print fan.

⬢Set the print fan aside. We will need it later again.

⬢Remove the two M3x30 screws to remove the idler-swivel from the heatsink.

⬢Remove the idler-swivel from the heatsink.

⬢Remove the festo with a universal wrench.

⬢Desenrosca el tornillo M2.5x6rT para retirar el sensor de filamento Hall.

⬢Carefully remove the Hall filament sensor.

⬢Release the set screw from the bottom of the heatsink to remove the NTC thermistor.

⬢Pull the NTC thermistor out from the heatsink.

⬢Very carefully pull the filament sensor out from the heatsink using the needle-nose pliers.

⬢Remove the grub screw from the heatsink.

⬢Coloca el sensor de filamento Hall en la cavidad de forma similar del disipador térmico.

⬢Fíjalo con un tornillo M2.5x6rT. Apriétalo con mucho cuidado, puedes romper la placa electrónica.

⬢Insert the grub screw into the slot closer to the bottom of the heatsink. See the picture.

⬢Insert the Prusa ball holder assembly into the heatsink. Make sure the steel ball part is closer to the side of the heatsink.

⬢Introduce el conjunto en el disipador.

⬢Tighten the idler-swivel with two M3x30 screws.

⬢The tip of each screw should be flush with the plastic part on the other side.

⬢On the extruder motor side, insert the NTC thermistor into the hole in the heatsink.

⬢Secure it with the M3x4T grub screw. Screw it all the way in. Tighten gently, but firmly using two fingers and the short side of the T6 Torx key. Applying more force may cause permanent damage to the thread.

⬢Align the heatsink with the motor assembly.

⬢Gearbox assembly (1x) you took from Nextruder

⬢PG-assembly-adapter (1x)

⬢Dismantle the gearbox assembly into its component parts:

⬢Using a paper towel clean all the parts from grease.

⬢En los siguientes pasos, volveremos a montar todo el conjunto de la caja de engranajes para garantizar una instalación correcta.

⬢Coloca el PG-assembly-adapter en el PG-assembly. Observa las cavidades para los engranajes en el adaptador.

⬢Desliza el PG-ring en el adaptador.

⬢Sujeta todo el conjunto con una mano para poder girarlo con el PG-ring.

⬢Con la otra mano, desliza el PG-ring en el ensamblaje PG con un movimiento oscilante (mueva el PG-ring a izquierda y derecha repetidamente) - un cuarto de vuelta es suficiente.

⬢Deténte cuando las superficies de los engranajes estén aproximadamente a ras con la superficie del anillo PG.

⬢Attach the main-plate on the heatsink. Note the orientation of the part. Use the cutout for the socket screw as a guide (lower left corner).

⬢Mantén la posición del PG-assembly y fíjalo al eje del motor del extrusor.

⬢Make sure the PG-ring perfectly fits on the socket set screw.

⬢Very gently and freely rotate with the whole PG assembly (PG-assembly-adapter, PG-assembly and PG-ring) until it drops down so that there is minimal gap between the assembly and the main-plate. Do not push on the assembly.

⬢Remove the PG-assembly-adapter.

⬢Attach the PG-assembly-adapter back on the PG-assembly again to verify that all parts are properly seated.

⬢Rotate with the PG-assembly-adapter. The PG assembly must be easy to rotate without having to exert much force.

⬢Remove the PG-adapter. You will no longer need it during assembly. We recommend keeping it for maintenance.

⬢Asegúrate de que el PG-assembly no sobresale sobre el PG-ring. Debe colocarse por debajo del nivel de la superficie del PG-ring o al mismo nivel que el anillo.

⬢No debe haber ningún espacio entre el PG-ring y la Main-plate. Si observas un hueco, retira el conjunto del engranaje planetario y vuelve a colocarlo.

⬢Open the Prusa Lubricant. Using the opposite side of the cap, puncture the hole in the opening of the tube.

⬢Aplique una pequeña cantidad de Lubricante Prusa alrededor del PG-ring y de los dientes del PG-assembly.

⬢Con una toalla de papel, limpia el exceso de lubricante en las superficies delanteras.

⬢Place the PG-case on the gearbox.

⬢Insert three M3x25 screws into the PG-case, but do not tighten them completely. They will be tightened later.

⬢Close the idler-lever and lock it in position with the idler-swivel.

⬢Plug the load cell sensor cable into the Dwarf board.

⬢Plug the filament sensor cable into the Dwarf board.

⬢Plug the heatsink thermistor cable into the Dwarf board.

⬢Prepare the Tool changer board & print fan assembly.

⬢Align the three metal spacers with the holes in the heatsink, make sure the board and fan cables are guided below the top spacer before you attach the heatsink, so that they are not pinched.

⬢Use the M3x10 screws to secure the heatsink & gearbox assembly to the spacers on the print fan cover. Start with the centre screw, taking care not to pinch any cables.

⬢Attach the hotend fan to the heatsink with its cable positioned as can be seen in the picture.

⬢Secure the heatsink fan with two M3x18rT screws.

⬢Plug the print fan cable into the Dwarf board.

⬢Plug the toolchanger cable into the Dwarf board.

⬢Plug the hotend fan cable into the Dwarf board.

⬢Attach the toolchanger board with the heat shield to the Nextruder.

⬢Secure the fan shield with a M3x30 screw.

⬢Insert the hotend into the heatsink.

⬢Plug in the hotend thermistor cable.

⬢Plug in the hotend heater cable.

⬢Close the printed Dwarf board cover on the Nextruder.

⬢Tighten the M3x12 screw.

⬢Secure the toolchanger with two M3x8rt screws.

⬢Connect the toolchanger cable.

⬢While pushing the hotend into the heatsink, tighten the grub screw with a Torx TX 8 key.

A partir de septiembre de 2024, podrás recibir nuevos racores M5-4 negro. El montaje y la funcionalidad siguen siendo idénticos al azul.

⬢Mount the festo on the top of the heatsink.

⬢Gently tighten the festo with a uni-wrench.

⬢Insert the PTFE tube into the festo connector as far as possible. Slighty tug on the PTFE tube to make sure it's firmly secured.

⬢Plug the Dwarf extruder cable to the Dwarf board.

⬢Slide the black nylon plate onto the screws in the Cheese board, and tighten them with a Torx T10 key.

⬢Gira con cuidado la impresora de modo que la parte frontal quede orientada hacia ti.

⬢Coge el Nextruder y colócalo con cuidado junto al dock.

⬢Coloca los dos pines metálicos a través de los orificios blancos del dock. Los imanes te ayudarán a acoplar el Nextruder.

⬢Compruebe que el Sello de la boquilla toca ligeramente la boquilla.

⬢Enchufa el cable de la fuente de alimentación desde la parte posterior de la impresora.

⬢Enciende el interruptor (símbolo "I").

⬢Realiza los test del menú Control -> Calibración y Tests.

El asistente probará todos los componentes importantes de la impresora. Todo el proceso dura unos minutos. Algunas partes del asistente requieren la interacción directa del usuario. Sigue las instrucciones que aparecen en pantalla.

⬢Conecta la impresora y enciéndela.

⬢Now we need to simulate the movement of the gearbox. On the LCD screen, navigate to Filament - Unload filament.

⬢As soon as the extruder's movement finishes, tighten the three M3x25 screws on the PG-case in the correct order (shown on the picture).

⬢Then loosen the screws slightly and repeat the process, tightening the screws in the correct order. This ensures that the gearbox is seated correctly.