{"product_id":"extruder-filament-sensor-left-right-extruder-unit-front-cover-assembly-x2d-for-bambu","title":"Bambu X2D Extruder Filament Sensor \/ Extruder Unit Front Cover Assembly","description":"\u003ch3\u003eExtruder Filament Sensor Left\u003c\/h3\u003e\n\u003cp\u003eThe extruder filament sensor - left is installed on the upper left part of the extruder and is responsible for detecting the filament presence.\u003c\/p\u003e\n\u003ch3\u003e In the Box\u003c\/h3\u003e\n\u003cp\u003e- Left Hall Detection Board *1;\u003c\/p\u003e\n\u003cp\u003e- BT2x5 Screw *2\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eX2D\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/0_3b2d12a4-5ddf-4629-bf52-8a6da4c72b5a.jpg?v=1779700802\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eExtruder Filament Sensor Right \u003c\/h3\u003e\n\u003cp\u003eThe extruder filament sensor - right is installed on the upper right part of the extruder and is responsible for detecting the filament presence.\u003c\/p\u003e\n\u003ch3\u003e In the Box\u003c\/h3\u003e\n\u003cp\u003e- Right Hall Detection Board *1;\u003c\/p\u003e\n\u003cp\u003e- BT2x5 Screw *1\u003c\/p\u003e\n\u003ch3\u003e Compatibility\u003c\/h3\u003e\n\u003cp\u003eX2D\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/c9ebf776602493aa6fc17cc7eb4b8bb6_8ef4e10f-5bb1-49a2-82cc-a75c7893c8a2.jpg?v=1779701126\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e Extruder Unit Front Cover Assembly\u003c\/h3\u003e\n\u003cp\u003eThe outer plastic shell of the extruder.\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e- Extruder Front Cover *1;\u003c\/p\u003e\n\u003cp\u003e- Filament Press Block *1\u003c\/p\u003e\n\u003cp\u003e- 693ZZ Bearing *1\u003c\/p\u003e\n\u003cp\u003e- BT3x7 Screw *3\u003c\/p\u003e\n\u003cp\u003e- BT2x8 Screw *1\u003c\/p\u003e\n\u003ch3\u003e Compatibility\u003c\/h3\u003e\n\u003cp\u003eX2D\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/Extruder_Unit_Front_Cover_Assembly_-X2D.jpg?v=1779702749\"\u003e\u003c\/p\u003e\n\u003ch3\u003eExtruder components Replacement guide for the X2D\u003c\/h3\u003e\n\u003cp\u003eThis article provides detailed steps for replacing the X2D extruder components.\u003c\/p\u003e\n\u003ch3\u003eThe X2D extruder is equipped with four independent accessories, namely:\u003c\/h3\u003e\n\u003cp\u003eLeft filament sensor board: Installed on the upper part of the left extruder, this accessory detects filament status.\u003c\/p\u003e\n\u003cp\u003eRight filament sensor board: Installed on the upper part of the right extruder, this accessory detects filament status.\u003c\/p\u003e\n\u003cp\u003eExtruder gear ( P2S): Installed inside the extruder and driven by the extruder motor, this gear assembly feeds filament to the hotend or retracts it from the extruder.\u003c\/p\u003e\n\u003cp\u003eExtruder unit front cover: The outer shell of the extruder.\u003c\/p\u003e\n\u003ch3\u003eApplicable printer model\u003c\/h3\u003e\n\u003cp\u003eBambu Lab X2D\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003ch3\u003eCommon situations requiring replacement of the extruder gear assembly:\u003c\/h3\u003e\n\u003cp\u003eGear wear or bearing wear causing \u003cbr\u003eprinting anomalies\u003c\/p\u003e\n\u003cp\u003eReplacement of the gear assembly is determined necessary by Bambu Lab technical support.\u003c\/p\u003e\n\u003ch3\u003eCommon situations requiring replacement of the filament sensor switch assembly:\u003c\/h3\u003e\n\u003cp\u003eFailure of filament detection functionality\u003c\/p\u003e\n\u003cp\u003eRibbon cable broken or damaged\u003c\/p\u003e\n\u003ch3\u003eCommon situations requiring replacement of the extruder unit front cover assembly:\u003c\/h3\u003e\n\u003cp\u003ePhysical damage affecting product use\u003c\/p\u003e\n\u003ch3\u003eRequired tools and materials\u003c\/h3\u003e\n\u003cp\u003eWrench\u003c\/p\u003e\n\u003cp\u003eH1.5 allen key\u003c\/p\u003e\n\u003cp\u003eH2.0 allen key\u003c\/p\u003e\n\u003cp\u003eNeedle nose pliers\u003c\/p\u003e\n\u003ch3\u003eSafety Warning\u003c\/h3\u003e\n\u003ch3\u003e⚠️ IMPORTANT!\u003c\/h3\u003e\n\u003cp\u003eIt's crucial to power off the printer before conducting any maintenance work, including work on the printer's electronics and tool head wires. Performing tasks with the printer on can result in a short circuit, leading to electronic damage and safety hazards.\u003c\/p\u003e\n\u003cp\u003eDuring maintenance or troubleshooting, you may need to disassemble parts, including the hotend. This exposes wires and electrical components that could short circuit if they contact each other, other metal, or electronic components while the printer is still on. This can result in damage to the printer's electronics and additional issues.\u003c\/p\u003e\n\u003cp\u003eTherefore, it's crucial to turn off the printer and disconnect it from the power source before conducting any maintenance. This prevents short circuits or damage to the printer's electronics, ensuring safe and effective maintenance. \u003c\/p\u003e\n\u003ch3\u003eRemove the Old Extruder Components\u003c\/h3\u003e\n\u003ch3\u003eStep 1. Remove the toolhead housing\u003c\/h3\u003e\n\u003ch3\u003eStep 2. Remove the hotend\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"hotend_removed.jpg\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/replace-hotend-heating-assembly\/hotend_removed.jpg\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 3. Remove the left and right filament cutter lever assemblies\u003c\/h3\u003e\n\u003cp\u003eRemove the screws of the left filament cutter lever assembly, spread the lever outward, and nest it in a position that does not interfere with subsequent operations.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_094702_667.png?v=1779760112\" alt=\"\"\u003eRemove the screws of the right filament cutter lever assembly, spread the lever outward, and nest it in a position that does not interfere with subsequent operations.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_094900_201.png?v=1779760160\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4. Remove the PTFE tubes\u003c\/h3\u003e\n\u003cp\u003ePress the pneumatic connector on the left filament sensor board and pull out the PTFE tube.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"004_left_ptfe_tube.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/004_left_ptfe_tube.png\"\u003e\u003c\/p\u003e\n\u003cp\u003ePush the lever of the flow blocker assembly to the right to expose the pneumatic connector on the right filament sensor board, loosen the connector counterclockwise with a wrench, and pull out the PTFE tube.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_095127_739.png?v=1779760304\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 5. Remove the hotend heating assembly and other cables\u003c\/h3\u003e\n\u003cp\u003eRemove the screws mounting the hotend heating assembly interface board bracket, remove the bracket, then disconnect the hotend heating assembly connector.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/006_heating_assembly_connector.png\" alt=\"006_heating_assembly_connector.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eRemove the wiring foam and disconnect the connectors on the toolhead interface board (except for the logo LED cable).\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_101530_419.png?v=1779762301\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eRemove all cables from the cable ducts and nest them in positions that do not interfere with subsequent operations.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/008_pull_out_cable.png\" alt=\"008_pull_out_cable.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 6. Remove the left hotend cooling fan\u003c\/h3\u003e\n\u003cp\u003eRemove the two screws securing the left hotend cooling fan and take off the fan.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_103205_984.png?v=1779762747\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 7. Remove the extruder unit front cover\u003c\/h3\u003e\n\u003cp\u003eRemove the 3 screws of the extruder unit front cover,\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"010_extruder_screws.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/010_extruder_screws.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eGently separate the extruder unit front cover assembly from the toolhead, while lightly pressing the hotend heating assembly interface board to prevent excessive cable pulling that may cause damage.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"011_remove_extruder_cover.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/011_remove_extruder_cover.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eLift up to release the extruder unit front cover assembly, leaving the right filament sensor board on the toolhead.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"011_right_hall.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/011_right_hall.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 8. Remove the right filament sensor board\u003c\/h3\u003e\n\u003cp\u003eTear off the acetic acid tape from the wiring and remove the right filament sensor board.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_104151_704.png?v=1779763330\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 9. Detach the extruder gear assembly\u003c\/h3\u003e\n\u003cp\u003eHold the large drive gear on the extruder by hand and remove the extruder gear.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_111020_636.png?v=1779765071\"\u003e\u003c\/p\u003e\n\u003cp\u003eRemove the screw of the driven gear pressure block located above the extruder unit.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"016_remove_block_screw.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/016_remove_block_screw.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eRemove the driven gear pressure block, then remove the driven gear assembly using pliers or tweezers.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"017_driven_extruder_gear.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/017_driven_extruder_gear.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTake out the spring and pressure plate from the driven gear pressure block.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan\u003e\u003cimg alt=\"018_gear_block.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/018_gear_block.png\"\u003e\u003c\/span\u003e\u003cspan\u003eStep 10. Remove the left cutter assembly\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eRemove the cutter plate screw with a screwdriver and take off the cutter plate.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan\u003e\u003cimg alt=\"014_left_cutter_screw.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/014_left_cutter_screw.png\"\u003e\u003c\/span\u003e\u003cspan\u003eRemove the left cutter assembly.\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_111336_001.png?v=1779765236\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eStep 11. Remove the left filament sensor board\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eRemove the two screws of the left filament sensor board on the extruder unit,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"019_left_hall_screws.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/019_left_hall_screws.png\"\u003e\u003c\/span\u003e\u003cspan\u003ehold the pneumatic connector on the left filament switch board, lift up and remove the left filament sensor board,\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"020_left_hall_connector.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/020_left_hall_connector.png\"\u003e\u003cspan\u003edetach the cable and the extruder unit front cover (the cable has adhesive backing; peel it off gently), detaching the left filament sensor board from the extruder unit front cover.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_111715_526.png?v=1779765452\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eInstall the New Extruder Components\u003c\/h3\u003e\n\u003ch3\u003eStep 1. Install the extruder gear assembly\u003c\/h3\u003e\n\u003cp\u003eInstall the extruder driven gear assembly through the shaft in the direction shown into the extruder unit front cover,\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"022_install_driven_gear.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/022_install_driven_gear.png\"\u003e\u003c\/p\u003e\n\u003cp\u003epick up the driven gear pressure block, place the spring inside,\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_112244_809.png?v=1779765782\"\u003e\u003c\/p\u003e\n\u003cp\u003eposition the pressure plate with the raised side facing the spring, and place the entire driven gear pressure block as shown, into the extruder unit front cover,\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/024_tableting.png\" alt=\"024_tableting.png\"\u003e\u003c\/p\u003e\n\u003cp\u003einstall the main extruder gear into the extruder unit front cover,\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/025_install_driven_gear_block.png\" alt=\"025_install_driven_gear_block.png\"\u003e\u003c\/p\u003e\n\u003cp\u003esecure the screw fixing the pressure block.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/026_install_block_screw.png\" alt=\"026_install_block_screw.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 2. Install the left cutter assembly\u003c\/h3\u003e\n\u003cp\u003eNest the left cutter assembly into the groove below the extruder unit front cover as shown,\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/027_install_left_cutter.png\" alt=\"027_install_left_cutter.png\"\u003e\u003c\/p\u003e\n\u003cp\u003einstall the cable pressure block onto the extruder unit front cover and tighten one screw.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-05-26_113015_255.png?v=1779766238\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 3. Install the left filament sensor board\u003c\/h3\u003e\n\u003cp\u003eNest the left filament sensor board in the left slot of the extruder unit front cover and press it into place.\u003c\/p\u003e\n\u003cp\u003eNote: The filament sensor board (green PCB) should face left, with the cable facing rearward to avoid incorrect installation direction.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/029_install_left_hall.png\" alt=\"029_install_left_hall.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eInstall the two screws of the left filament sensor board.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/019_left_hall_screws.png\" alt=\"019_left_hall_screws.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4. Install the right filament sensor board\u003c\/h3\u003e\n\u003cp\u003ePush the right filament sensor board upwards into the extruder unit front cover from the bottom as shown, pushing it fully in.\u003c\/p\u003e\n\u003ch3\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/030_install_right_hall.png\" alt=\"030_install_right_hall.png\"\u003e\u003c\/h3\u003e\n\u003cp\u003ePush the lever of the flow blocker assembly below the toolhead to the left to lower the right filament sensor board.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"005_switch_flow_blocker.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/005_switch_flow_blocker.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 5. Install the extruder unit front cover\u003c\/h3\u003e\n\u003cp\u003eNest the extruder unit front cover onto the toolhead front carriage; please hold the right filament sensor board by hand to prevent it from falling out.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/031_install_extruder.png\" alt=\"031_install_extruder.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTighten the 3 screws of the extruder unit front cover.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/010_extruder_screws.png\" alt=\"010_extruder_screws.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eBundle the right filament sensor board cable together with other cables using acetic acid tape, nest them in the right cable duct.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/032_right_cable.png\" alt=\"032_right_cable.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eNest the cables on the left side in the left cable duct, paying attention to insert the thinner Eddy Current Coil cables first.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/033_left_cable.png\" alt=\"033_left_cable.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 6. Install the left hotend cooling fan\u003c\/h3\u003e\n\u003cp\u003eNest the left hotend cooling fan into place and tighten the 2 fixing screws.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/034_left_hotend_screws.png\" alt=\"034_left_hotend_screws.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 7. Connect the cables\u003c\/h3\u003e\n\u003cp\u003eConnect the cables of the toolhead interface board and the hotend heating assembly interface board, then reattach the foam padding.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"035_install_the_form.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/035_install_the_form.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eCable interfaces of the toolhead interface board are as follows:\u003c\/p\u003e\n\u003cp\u003e\u003cimg\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/20260526135104_679_22.png?v=1779774709\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"007_extruder_connection_board_cable_connection.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_th_board\/007_extruder_connection_board_cable_connection.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eInstall and secure the bracket of the hotend heating assembly interface board with 2 screws.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"036_install_hotend_heating_bracket.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/036_install_hotend_heating_bracket.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eNote: Cables of the left Eddy Current Coil, left filament sensor board, right filament sensor board, and right Eddy Current Coil should all run under the bracket.\u003c\/p\u003e\n\u003ch3\u003eStep 8. Install the PTFE tubes\u003c\/h3\u003e\n\u003cp\u003ePush the flow blocker assembly to the right to expose the pneumatic connector on the right filament sensor board, nest the PTFE tube into place, then use the printed wrench to tighten the pneumatic connector clockwise to secure the PTFE tube, finally push the flow blocker assembly to the left to lower the right filament sensor board.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"037_switch_flow_blocker.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/037_switch_flow_blocker.png\"\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/005_right_ptfe_tube.png\" alt=\"005_right_ptfe_tube.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eInstall the left extruder PTFE tube onto the left pneumatic connector.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/038_install_left_ptfe_tube.png\" alt=\"038_install_left_ptfe_tube.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eAfter installation, gently pull up the PTFE tube to check that it is properly seated.\u003c\/p\u003e\n\u003ch3\u003eStep 9. Install the left and right filament cutter lever assemblies\u003c\/h3\u003e\n\u003cp\u003eRestore the right filament cutter lever to its original position and tighten one screw,\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"003_right_cutter_lever.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/003_right_cutter_lever.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"003_right_cutter_lever_screw.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/003_right_cutter_lever_screw.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eRestore the left filament cutter lever to its original position and tighten one screw,\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"002_left_cutter_lever.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/002_left_cutter_lever.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"002_left_cutter_lever_screw.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/maintenance\/replace_extruder_unit\/002_left_cutter_lever_screw.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eNote: The blades of the left and right cutter assemblies must be positioned within the slots of the filament cutter lever assemblies. Please refer to Filament Cutter Lever Replacement Guide for the X2D for a detailed tutorial on installing the filament cutter lever assemblies.\u003c\/p\u003e\n\u003ch3\u003eStep 10. Install the hotends\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/replace-hotend-heating-assembly\/install_hotend_001.png\" alt=\"install_hotend_001.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 11. Install the toolhead housing\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/x2d\/replace-hotend-heating-assembly\/install_toolhead_cover_001.png\" alt=\"install_toolhead_cover_001.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eVerifying Success\u003c\/h3\u003e\n\u003cp\u003e✅ The blade can move smoothly\u003c\/p\u003e\n\u003cp\u003e✅ Power on and verify that the left and right filament sensor boards correctly detect filament status\u003c\/p\u003e\n\u003cp\u003e✅ Power on and verify that the extruder is driven properly by the extruder motor\u003c\/p\u003e","brand":"Bambu Lab","offers":[{"title":"Extruder Filament Sensor - Left","offer_id":53325264814393,"sku":null,"price":12.0,"currency_code":"USD","in_stock":true},{"title":"Extruder Filament Sensor - Right","offer_id":53325264847161,"sku":null,"price":12.0,"currency_code":"USD","in_stock":true},{"title":"Extruder Unit Front Cover Assembly","offer_id":53325264879929,"sku":null,"price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/Extruder_Filament_Sensor_Left_Right_Extruder_Unit_Front_Cover_Assembly.jpg?v=1779778958","url":"https:\/\/p3d.mx\/products\/extruder-filament-sensor-left-right-extruder-unit-front-cover-assembly-x2d-for-bambu","provider":"P3D","version":"1.0","type":"link"}