The Linear 218189-01 Trolley Assembly is an OEM replacement carriage designed for select Linear garage door openers. This component travels along the opener rail and connects to the door arm, translating the drive system’s motion to open and close the garage door. It includes the integrated manual release mechanism so you can disengage the door from the opener when power is out or service is needed. Replacing a worn, cracked, or stripped trolley restores consistent travel, proper door engagement, and smooth operation in residential applications that use compatible Linear operators.
Installation typically involves disconnecting power, releasing the door, relieving chain or belt tension as applicable to your opener, sliding off the old carriage, and installing the new assembly in the correct orientation before re-tensioning and re-adjusting travel limits and force per the Linear owner’s manual. This is not a universal part; verify compatibility by confirming that your opener’s parts diagram or service documentation lists 218189-01 for your specific model and rail style. For safety, avoid working near door springs and high-tension components; consult a qualified technician if you are unsure. Common search terms include Linear trolley assembly, Linear carriage, 218189-01 replacement, and Linear garage door opener parts.