Руководство по обслуживанию экструдера: чистка и смазка - серии X1&P1

In this guide we will show the steps required for cleaning and lubricating the extruder and its gears for smooth operation. 
Keeping the extruder clean and well lubricated will ensure a longer lifetime before replacement, and will also ensure the print quality remains consistent.

For X1 Serise, please refer to this wiki article: Extruder Maintenance Guide: Cleaning and Lubrication - X1C

When to use?

This guide should be used regularly, as extruder maintenance is important.
Debris from the filament, dust and other particulates could generate issues with the extruder over time.

In the image below, you can see an example of an extruder which was used for ~400 hours with no maintenance

Common issues that are caused by a dirty extruder

• Inconsistent print quality
• Filament clogs
• Premature wear of the components

In some situations, the extruder gears are damaged beyond repair and магазин Bambu Lab for a quick and easy replacement.

Tools and materials needed

• H2.0 hex wrench
• Lubricant Oil or Grease
• 15 minutes of your time

Safety Warning

IMPORTANT!

It's crucial to power off the printer before performing any maintenance work on the printer and its electronics, including tool head wires, because leaving the printer on while conducting such tasks can cause a short circuit, which can lead to additional electronic damage and safety hazards.

When you perform maintenance or troubleshooting on the printer, you may be required to disassemble some parts, including the hotend. This process can expose wires and electrical components that could potentially short circuit if they come into contact with each other or with other metal or electronic components while the printer is still on. This can damage the electronics of the printer and cause further damage.

Therefore, it's essential to switch off the printer and disconnect it from the power source before doing any maintenance work. This will prevent any short circuits or damage to the printer's electronics. By doing so, you can avoid potential damage to the printer's electronic components and ensure that the maintenance work is performed safely and effectively.

Если у вас есть вопросы или сомнения по поводу следования этому руководству, пожалуйста, обратитесь в техподдержку.

Steps to clean the extruder

1. Remove the extruder from the print head

Lift the toolhead front cover, disconnect the toolhead fan connector, and remove the front cover.

Start by carefully disconnecting the extruder and hotend wires as shown in the image below
Please make sure to be gentle when disconnecting the filament sensor ribbon cable (the one marked with 1). 
This cable is sensitive and can be damaged.

Next, we need to release the filament cutter. While holding the lever pressed, loosen the screw holding it in place. 
After the screw has been loosened, gently let go of the filament cutter.

With the lever released, remove the first 3 screws holding the extruder in place, then slightly loosen the screws numbered 4 and 5 to release the filament guide. 
Then, push on the filament guide towards the extruder, which will allow you to remove the PTFE tube.

You can now remove the entire extruder assembly from the printer

2. Disassemble the extruder

After the extruder has been removed from the printer, it's time to disassemble it.
Start by removing screws 1 to 4 as shown in the image below.

The screw nr. 5 is used for the idler gear. This screw should be loosened halfway for now to release the spring from tension
You can then pull on the yellow gear towards you to remove it. The same can be done for the idler.

Note: If the bearing is lost when removing the gear, it will not be able to be extruded properly.

image	image

3. Clean the debris from the extruder body and components

As seen in the image below, this particular extruder has a lot of dust inside it. Before re-assembling the extruder, make sure that all the dust is cleaned 
You can use a small brush and compressed air for this operation.

4. Extruder Lubrication

Before re-assembling the extruder, it's a good idea to apply some lubrication to the gears. 
Add a small amount of lubricant on the idler extruder gear, and the sides as shown in the image below.

Next, you can also apply a bit of lubricant on the extruder gear as shown in the image below.
Ensure that you coat all sides, then wipe off any excess before installing the gear back to the extruder. 
Less is more in this case. Adding too much lubricant can lead to it reaching the filament path which is not desired.

Finally, you can install the gear back on the extruder body, and apply a small amount of oil around the section shown in the image below:

5. Assemble the Extruder

1. Install the gear and spring.

2. Put the large gear back into place.

3. Replace the rear cover and use an H2.0 Hex wrench to tighten the 4 screws back into place.

4. Turn the tension screw back until it snaps into place.

5. Turn the large gear by hand to see if it can rotate normally.

6.Install the extruder back to the printer

Now that everything is clean and lubricated, you can re-install the extruder back to the printer. 
Start by putting the extruder back in place and re-installing the extruder screws labeled 1, 2, 3. 
Then, insert the PTFE tube on the top of the extruder, raise the filament guide and tighten the screws labeled 4,5.

Next, push the filament lever as shown in the image below and tighten the lever screw.

Finally, re-connect all the wires of the extruder and hotend to the board.

Please take extra care when during this operation, to ensure the connectors are aligned correctly.

Connect the front cover fan cable to the interface board, then close the front cover.

Calibration step after the operation

We recommend performing a full calibration of the printer after this operation, to ensure smooth operation.

End Notes