EN
  • Čeština
  • Español
  • Italiano
  • Deutsch
  • Polski
  • Français
Login

How to replace a Nextruder (XL)

Menu

How to replace a Nextruder (XL)

How to replace a Nextruder (XL)
Relevant for:
Last updated 9 months ago
How to replace a Nextruder (XL)
 Difficulty
Moderate
 Steps
20
 Available languages
CSPLDEESITFR

Step 1 Introduction

Introduction
Introduction
This guide will take you through the replacement of the Nextruder on the Original Prusa XL.
Some parts might slightly differ. However, it does not affect the procedure.
All necessary parts are available in our eshop shop.prusa3d.com
Note that you have to be logged in to have access to the spare parts section.

Step 2 Tools necessary for this chapter

Tools necessary for this chapter
Tools necessary for this chapter
Tools necessary for this chapter
For this chapter, please prepare:
Torx TX10 screwdriver
2.5mm Allen key
A cardboard box for use as a heatbed protection during the assembly. Hint: use the Prusament box.

Step 3 Preparing the printer

Preparing the printer
Preparing the printer
Preparing the printer
Preparing the printer
Place the empty cardboard box approximately to the front center part of the heatbed.
Manually move the X-axis assembly all the way to the front side of the printer.
Move the extruder approximately to the center of the X-axis.
If you have loaded the filament, unload it from the hotend. On the screen, navigate to Filament -> Unload Filament.
WARNING: The hotend and heatbed are very HOT. Do not touch these parts!!!
Remove fully the filament from the hotend and the PTFE.
Wait till the printer is cold!

Step 4 Unpluging the printer

Unpluging the printer
Unpluging the printer
Turn the power switch OFF ("O" symbol).
On the rear side of the printer, unplug in the PSU cable.

Step 5 Disconnecting the extruder

Disconnecting the extruder
Disconnecting the extruder
Disconnecting the extruder
Disconnecting the extruder
Locate the xl-rear-cable-management-plug (cover) on the rear of the printer.
Slightly loosen the two screws holding the cover. No need to remove them completely. Push the cover to the right and remove it from the printer. Don't throw it away, we'll use it later. 
Disconnect the extruder cable by pushing the security lever on the connector.
Push the black collet to the right.
Pull out the PTFE tube.

Step 6 Detaching the extruder cable

Detaching the extruder cable
Detaching the extruder cable
Detaching the extruder cable
Turn the printer around so that the PSU side is facing you.
Push the 2,5mm Allen key all the way through a hole in the rear metal sheet as well as through the plastic part until you reach the screw. Untighten the screw.
Take off the xl-dock-cable-router.

Step 7 Extruder detaching

Extruder detaching
Extruder detaching
Extruder detaching
Turn the printer so that the LCD is facing you.
Take off the x-carriage-cover from the X-carriage.
With a TX10 screwdriver remove the bottom M3x12bT screws from the X-carriage.

Step 8 Extruder take off

Extruder take off
Extruder take off
Extruder take off
Hold the extruder during detaching.
Hold the extruder and with a TX10 screwdriver unscrew two M3x12bT screws.
Take off the extruder assembly from the X-carriage

Step 9 Preparing the new Nextruder

Preparing the new Nextruder
Preparing the new Nextruder
Preparing the new Nextruder
For the following steps, please prepare:
Nextruder cable bundle (1x)
Nextruder (1x)
This is the end of the nextruder cable bundle we are going to attach to the Nextruder in the next step. It consists of a cable connector, a flexible plate and a semi-transparent PTFE tube.

Step 10 Nextruder cable & PTFE tube

Nextruder cable & PTFE tube
Nextruder cable & PTFE tube
Nextruder cable & PTFE tube
Nextruder cable & PTFE tube
Using the T10 screwdriver, loosen the marked two screws on the inside of the nextruder.
Hook up the keyhole openings in the flexible plate of the cable bundle onto the screw heads.
Make sure the part of the bundle with the cable and the connector is facing the top of the extruder; as seen in the picture.
Using a T10 screwdriver, tighten marked two screws on the inside of the extruder.
The cable bundle must be installed exactly the same way as in the picture; with the cable on top and the semi-transparent PTFE tube on the bottom.

Step 11 Nextruder cable bundle assembly

Nextruder cable bundle assembly
Nextruder cable bundle assembly
Nextruder cable bundle assembly
Nextruder cable bundle assembly
Pull the flexible line up so that the screws engage into the narrower part of the keyhole openings.
Verify both screws have engaged.
While the screws sit in the narrower parts of the openings, tighten them up using the T10 screwdriver.
Verify the flexible part of the cable bundle is held tight to the extruder body.

Step 12 Nextruder cable bundle assembly

Nextruder cable bundle assembly
Nextruder cable bundle assembly
Nextruder cable bundle assembly
Attach the cable connector into the top of the nextruder.
Insert the semi-transparent PTFE tube into the fitting on the extruder. Push it all the way in.
Good! Your nextruder assembly is ready to be installed.

Step 13 Installing the extruder: parts preparation

Installing the extruder: parts preparation
Installing the extruder: parts preparation
Installing the extruder: parts preparation
Installing the extruder: parts preparation
For the following steps, please prepare:
Single tool extruder assembly (1x)
Due to the careful testing of each printer before it is shipped, there may be a small filament residue on the extruder nozzle.
From the extruder body, remove four M3x12bT (countersunk) screws and set them aside. You will need them in the next step.

Step 14 Installing the extruder

Installing the extruder
Installing the extruder
Installing the extruder
Atach the extruder assembly to the X-carriage. See the correct orientation of the extruder.
Hold the extruder during installation.
Hold the extruder in place and secure it using two M3x12bT screws in the top two openings. Do not fully tighten the screws yet!

Step 15 Securing the extruder

Securing the extruder
Securing the extruder
Securing the extruder
Securing the extruder
Add the two remaining M3x12bT screws into the lower openings in the X-carriage to fix the extruder assembly in place. Do not fully tighten the screws yet!
Tighten all four screws in a diagonal pattern to secure the extruder assembly.
Attach the x-carriage-cover onto the X-carriage. Press it in unti it clicks in.
Remove the Prusament cardboard box off the heatbed.

Step 17 Attaching the extruder cable

Attaching the extruder cable
Attaching the extruder cable
Attaching the extruder cable
Attaching the extruder cable
Turn the printer around so that the PSU side is facing you.
Locate the long metal profile (tch-mounting-insert) in the back of the top extrusion. It has five threaded openings in it.
Place the xl-dock-cable-router (the plastic part) between the rear metal sheet and the aluminum extrusion.
There is a screw protruding from the xl-dock-cable-router. The screw must be attached to the third threaded opening on the long metal profile. Look through the rear metal sheet to check if the cable holder is lined up with the correct opening.
Push the Allen key all the way through a hole (bottom left in the pattern) in the rear metal sheet as well as through the plastic part until you reach the screw. Tighten it up.

Step 18 Connecting the extruder cable

Connecting the extruder cable
Connecting the extruder cable
Connecting the extruder cable
Locate the xl-rear-cable-management-plug (cover) on the rear of the printer.
Connect the extruder cable into the upper connector labeled DWARF 1.
Re-attach the cover onto the screws. Push it all the way to the left and tighten the screws back up.

Step 20 Well done!

Well done!
Well done!
Good job! You made it!
Now you need to go through the printer self-test and calibration. Use chapter First run from the printer assembly instructions.
Was this guide helpful?

Comments

Still have questions?

Still have questions?

If you have a question about something that isn't covered here, check out our additional resources.
And if that doesn't do the trick, you can send an inquiry to [email protected] or through the button below.

Contact us