How to Replace the Extruder Model Cooling Fans

[ Manual E2 – How to Replace the Extruder Model Cooling Fans – V1.0 ]


Note: The steps of replacing both sides of the extruder model cooling fans are similar. Here is an example of the left extruder’s model cooling fan replacement.


Tools:

①2mm hex wrench


②1.5mm hex wrench


1.Power off the printer.


2.Use a 2mm hex wrench to remove the two screws retaining the extruder cover to the extruder, as shown (marked in red) in the pictures below.


3.Release the buckle retaining the extruder connection cable.


4.Use a 2mm hex wrench to remove the two screws retaining the extruder connection board cover to the extruder.


5.Use a 2mm hex wrench to remove the two screws retaining the extruder connection board to the extruder.


6.Gently pull out the extruder connection board in the direction of the arrow shown below. Be mindful of the small protrusion holding it in place.


7.Remove the fan connection cable from the slot marked in red as shown in the picture below.


Note: If the connector is difficult to remove, you can use a small pair of tweezers to gently wiggle the connector out of the slot.


8.Use a 1.5mm hex wrench to remove the two screws retaining the fan to the extruder.

At this step, you should be able to completely remove the fan from the extruder.

 


-Reassembly-

9.Install the new fan with the arrow pointing down.


10.Thread the right or left side fan cable directly up to the extruder connection board.

 

Note: Use the length of the fan cable to determine which extruder it belongs to.

The longer cable is for the left print head and the shorter cable is for the right extruder.


11.Reinstall the extruder connection board by plug the small protrusion of the board into the hole on the extruder.

Once it’s oriented properly, tuck the wires into the cable management slot.


12.Reconnect the fan cable to the slot on extruder connection board, the slot marked FAN0 for the left fan and the slot marked FAN2 for the right fan.


13.Reinstall the two screws by the 2mm hex wrench.


14.Connect the extruder connection cable back into the extruder connection board.

Leave enough slack to be sure it’s not strained. Reinstall the cable by the buckle.


[ Manual E2 – How to Replace the Extruder Model Cooling Fans – V1.0 ]


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