{"product_id":"for-bambu-lab-extruder-gear-assembly-h2s","title":"for Bambu Lab Extruder Gear Assembly - H2S","description":"\u003cp\u003eThe Extruder Gear Assembly precisely advances and controls filament movement, ensuring smooth printing and enabling filament changes when required.\u003c\/p\u003e\n\u003ch3\u003e Installation\u003c\/h3\u003e\n\u003cp\u003ePlease learn about the installation on Bambu Lab Wiki.\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e- Extruder Drive Gear*1\u003c\/p\u003e\n\u003cp\u003e- Extruder Idler Gear*1\u003c\/p\u003e\n\u003cp\u003e- Shim Washer*1\u003c\/p\u003e\n\u003cp\u003e- Compression Washer*1\u003c\/p\u003e\n\u003cp\u003e- Compression Spring*1\u003c\/p\u003e\n\u003cp\u003e- M3-11 Screw*1\u003c\/p\u003e\n\u003ch3\u003e Compatibility\u003c\/h3\u003e\n\u003cp\u003eH2S and H2S Laser\u003c\/p\u003e\n\u003ch3\u003eReplace H2S Extruder Gear Assembly\u003c\/h3\u003e\n\u003ch3\u003ePrecautions:\u003c\/h3\u003e\n\u003cp\u003ePlease be sure to follow the disassembly sequence outlined in this article strictly. Especially before removing the cover of the extruder, make sure to first remove the extruder filament sensor (handle with care to avoid pulling too hard), as failure to do so may result in the wiring of the sensor broken.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-02-12_151449_506.png?v=1770880528\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWhen to Use\u003c\/h3\u003e\n\u003cp\u003eExtruder gear failure.\u003c\/p\u003e\n\u003ch3\u003eTools and Materials Needed\u003c\/h3\u003e\n\u003cp\u003eNew extruder gear\u003c\/p\u003e\n\u003cp\u003eAllen keys H2.0 and H1.5\u003c\/p\u003e\n\u003cp\u003eDouble-sided tape (recommended)\u003c\/p\u003e\n\u003cp\u003e20 minutes\u003c\/p\u003e\n\u003ch3\u003eScrew List\u003c\/h3\u003e\n\u003cp\u003eScrew A: 2 screws for the filament sensor, BT2x6\u003c\/p\u003e\n\u003cp\u003eScrew B: 4 screws for fixing the extruder unit front cover, BT3x8\u003c\/p\u003e\n\u003cp\u003eScrew C: 1 screw for the cutter handle, BT2.6x14.5\u003c\/p\u003e\n\u003cp\u003eScrew D: 1 side screw for the extruder, BT3x12\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"extruder-gear-screw.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/extruder-gear-screw2.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eSafety Warning\u003c\/h3\u003e\n\u003cp\u003eIMPORTANT!\u003c\/p\u003e\n\u003cp\u003eBefore performing any maintenance on the printer or its electronic components (including toolhead cables), turn off the printer and disconnect the power supply to avoid short circuits, which may cause damage to electronic devices and safety hazards.\u003c\/p\u003e\n\u003cp\u003eWhen maintaining or troubleshooting the printer, first check the temperature of the hotend and heatbed. Avoid operating at high temperatures. If high-temperature operation is necessary, wear heat-insulating gloves to ensure safe and effective maintenance.\u003c\/p\u003e\n\u003cp\u003eIf you have any questions about this guide, please click to submit a service ticket, and we will respond promptly to provide the help you need.\u003c\/p\u003e\n\u003ch3\u003eDisassembly Instructions\u003c\/h3\u003e\n\u003ch3\u003eStep 1: Remove the Hotend\u003c\/h3\u003e\n\u003cp\u003eRefer to this tutorial to remove the hotend.\u003c\/p\u003e\n\u003ch3\u003eStep 2: Disconnect the PTFE Tube\u003c\/h3\u003e\n\u003cp\u003ePress the pneumatic connector to disconnect the PTFE tube;\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/unplug_tube.webp\" alt=\"unplug_tube.webp\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 3: Remove the Rotating Wheel\u003c\/h3\u003e\n\u003cp\u003eRotate the rotating wheel and take it off.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/remove_gear.webp\" alt=\"remove_gear.webp\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4: Loosen the Cutter Handle\u003c\/h3\u003e\n\u003cp\u003eHold the cutter handle and use a screwdriver to remove 1 screw. After the screw is fully removed, gently release the cutter handle and let it hang naturally.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-02-12_152403_967.png?v=1770881062\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 5: Remove the Filament Sensor\u003c\/h3\u003e\n\u003cp\u003eUse an H2.0 Allen key to remove 2 screws. If possible, attach double-sided tape to the top of the toolhead to place the filament sensor, preventing it from falling during subsequent disassembly and assembly. Note: Do not pull hard when removing the filament sensor, and handle it carefully to avoid damaging the black FPC cable.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/10_25b5e114-28d1-4b5d-aeca-4de8c2520e58.jpg?v=1770881550\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 6: Remove the Extruder Unit Front Cover\u003c\/h3\u003e\n\u003cp\u003eUse an H2.0 Allen key to loosen the tension driven lever locking screw on the side by one full turn;\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eUse an H2.0 Allen key to remove the 4 screws on the front cover.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-1.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image-1.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eRemove the extruder unit front cover.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"extruder_cover.webp\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/extruder_cover.webp\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 7: Remove the Driven Wheel Bracket\u003c\/h3\u003e\n\u003cp\u003eUse an H2.0 Allen key to remove the side screw. The internal spring and end cap may easily fall off when removing the bracket, so handle it carefully to prevent loss.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-02-12_153754_445.png?v=1770881902\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 8: Remove the Extruder Gear\u003c\/h3\u003e\n\u003cp\u003eGently shake the large extruder gear and pull it out directly.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-3.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image-3.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAssembly Instructions\u003c\/h3\u003e\n\u003ch3\u003eStep 1: Install the Extruder Gear\u003c\/h3\u003e\n\u003cp\u003eInstall the extruder gear.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/extruder_gear.webp\" alt=\"extruder_gear.webp\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 2: Install the Driven Wheel Bracket\u003c\/h3\u003e\n\u003cp\u003eMount the driven wheel bracket onto the corresponding rotating shaft. Assemble the spring and end cap in the correct orientation and position (refer to the correct and incorrect examples below), place them in the corresponding position on the driven wheel bracket, and screw in the side screw to hold them in place—do not fully tighten yet.\u003c\/p\u003e\n\u003cp\u003eIMPORTANT!\u003cbr\u003eEnsure the spring and end cap are installed correctly; otherwise, the extruder may fail to grip the filament, leading to printing errors.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-02-12_154323_380.png?v=1770882231\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eLeft: Correct demonstration, with the screw pressing against the concave surface of the end cap;\u003c\/p\u003e\n\u003cp\u003eRight: Incorrect demonstration, with the end cap in the wrong position, preventing the spring from being compressed.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/wiki.bambulab.com\/h2s\/maintenance\/extruder-tension-screw.png\"\u003e\u003c\/p\u003e\n\u003cp\u003ePre-lock the side screw by 2-3 turns—do not fully tighten, as this may hinder front cover installation.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-9.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image-9.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 3: Install the extruder unit front cover\u003c\/h3\u003e\n\u003cp\u003eReattach the extruder unit front cover and screw in the 4 front cover screws.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-02-12_154708_125.png?v=1770882450\"\u003e\u003c\/p\u003e\n\u003cp\u003eTighten the extruder side screw;\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-11.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image-11.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 4: Install the filament sensor\u003c\/h3\u003e\n\u003cp\u003eWhen installing the extruder filament sensor, make sure the black FPC cable is not bent and is placed smoothly into the gap. Then fasten the extruder filament sensor with 2 screws.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-02-12_154949_915.png?v=1770882611\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eWhen assembling, be careful not to pinch the sensor cable. Use your finger or a plastic tool to move the cable away from the screw holes. Before tightening the screws, check the holes from the top to ensure the cable is not blocking them.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/ScreenShot_2026-02-12_155146_577.png?v=1770882725\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 5: Reattach the Cutter Handle\u003c\/h3\u003e\n\u003cp\u003eBefore re-tightening the screw, hold the cutter handle firmly in position. When tightening the screw, avoid excessive force to prevent thread stripping.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image-14.png\" alt=\"image-14.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 6: Connect the PTFE Tube\u003c\/h3\u003e\n\u003cp\u003eInsert the PTFE tube.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-15.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image-15.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 7: Reinstall the Rotating Wheel\u003c\/h3\u003e\n\u003cp\u003eReattach the rotating wheel.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"image-16.png\" src=\"https:\/\/public-cdn.bblmw.com\/wiki\/new\/h2\/h2s\/maintenance\/replace-extruder-gear\/image-16.png\"\u003e\u003c\/p\u003e\n\u003ch3\u003eStep 8: Install the Hotend\u003c\/h3\u003e\n\u003cp\u003eRefer to this tutorial to install the hotend.\u003c\/p\u003e\n\u003ch3\u003eHow to Verify Completion\/Success\u003c\/h3\u003e\n\u003cp\u003eTurn the printer back on and control filament filamenting and retraction via the screen to confirm proper operation.\u003c\/p\u003e","brand":"Bambu Lab","offers":[{"title":"H2S and H2S Laser","offer_id":51934194270521,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/4531\/2569\/files\/Bambu_Extruder_Gear_Assembly_-_H2S_H2S_Laser.png?v=1770879086","url":"https:\/\/p3d.mx\/es\/products\/for-bambu-lab-extruder-gear-assembly-h2s","provider":"P3D","version":"1.0","type":"link"}