The LiftMaster 41D4671 Screw Drive Limit Kit is a genuine OEM replacement kit from The Chamberlain Group for select LiftMaster residential screw-drive garage door openers. It restores precise open and close travel control by replacing the limit components that signal the operator to stop at the correct positions. Use this kit when a screw-drive opener over-travels, stops short, or no longer holds its up/down limit settings after adjustment.
This kit is designed for LiftMaster screw-drive rail assemblies used on specific models such as the LiftMaster 3240; always confirm compatibility by matching part number 41D4671 in your opener’s parts list or owner’s manual. Installation requires disconnecting power, securing the door, releasing the trolley, and fitting the new limit components at the motor head/rail per manufacturer instructions, followed by re-setting travel limits and verifying force settings. No changes to remote controls or radio frequency are typically needed. Intended for residential sectional garage doors; not for chain or belt drive openers. For safe operation and correct calibration, follow all LiftMaster service procedures and safety precautions during setup.
Compatible with LiftMaster 1000SD, 1000SDR, 2000SD, 2000SDR, 2110, 2220, 3110, 3130, 3130M, 3220, 3240 and 3240M models