for Bambu Lab P2S X3508 Extruder Servo Motor

X3508 Extruder Servo Motor Replacement Guide for the P2S

This guide shows how to remove and install the extruder motor of P2S.

The X3508 extruder servo motor used in the P2S is a high-precision servo motor developed by Bambu Lab. It accurately controls filament feeding, stopping, and retraction, making it a key component for ensuring print quality and success. The accessory package includes the extruder motor and mounting screws.

X3508 Extruder servo motor* 1
M2.5x5 screw* 2

When to Use This Guide

The extruder servo motor is damaged and is unable to function.

Required Tools and Materials

1. New X3508 extruder servo motor
2. M2.5x5 screw* 2
3. H2.0 Allen key
4.  H1.5 Allen key

Safety Warning
IMPORTANT!

Always power off and disconnect power on the printer before performing maintenance work. Not doing so means there is a risk of electric shock, short circuit, and damage to the printer or surrounding area.

When a maintenance task necessitates the printer being powered on, use insulated gloves for safety and pay special care not to pinch, damage, or put pressure on any exposed wires, connectors, or circuit boards. Additionally, the nozzle can be extremely hot so never touch it with exposed skin.

Remove the Extruder Servo Motor
Step 1: Remove the Toolhead Housing

Please refer to the wiki: Toolhead Housing Replacement Guide for the P2S | Bambu Lab Wiki for instructions on removing the toolhead housing.

Step 2: Remove the Extruder

Please refer to the wiki: Extruder Components Replacement Guide for the P2S | Bambu Lab Wiki for instructions on removing the extruder.

Step 3: Remove the TH board

Please refer to the wiki: Toolhead Circuit Board Replacement Guide for the P2S | Bambu Lab Wiki for instructions on removing the TH board.

Step 4: Remove the Extruder Servo Motor

Use an H2.0 Allen key to remove the two extruder servo motor fixing screws (M2.5x5), and then remove the 3508 extruder servo motor from the toolhead.

Install the Extruder Servo Motor
Step 1: Install the Extruder Motor

Refer to the installation orientation in the figure below (with the extruder servo motor cable facing left), and install the extruder servo motor onto the toolhead. Then, use an H2.0 Allen key to tighten the two M2.5×5 mounting screws.

Note: Please hold the extruder servo motor with your hand to prevent it from falling.Step 2: Install the TH board

Please refer to the wiki: Toolhead Circuit Board Replacement Guide for the P2S | Bambu Lab Wiki for instructions on installing the TH board.

Step 3: Install the Extruder

Please refer to the wiki: Extruder Components Replacement Guide for the P2S | Bambu Lab Wiki for instructions on installing the extruder.

Step 4: Install the Toolhead Housing

Refer to the wiki: Toolhead Housing Replacement Guide for the P2S | Bambu Lab Wiki for instructions on installing the toolhead housing.

Verifying Functionality

Connect the power supply, turn on the printer, and check if the extruder can extrude filament normally.

If you encounter any problems, retrace your steps and ensure that all connections are secure before trying again. If the problem persists, contact the Bambu Lab technical support for further assistance.