The Marantec 102276 Gearmotor is a genuine OEM replacement drive unit for select Marantec garage door openers. This assembly integrates the motor and reduction gearbox that power the chain- or belt-driven rail, restoring smooth door travel when the original drive unit has worn or failed. Designed for compatibility only with opener models and parts lists that specifically call out part number 102276, it helps maintain quiet, reliable operation in residential or light commercial applications using Marantec Comfort and Synergy series operators where specified by the manufacturer’s documentation.
Use this replacement gearmotor when the opener hums without moving, stalls under load, or exhibits grinding from the internal gearset. Installation typically involves removing the opener cover, transferring any model-specific hardware or sensors if applicable, mounting the new assembly, and then re-setting travel limits and force settings per the Marantec service manual. For safety, disconnect power before servicing, ensure the garage door is balanced and secured, and consider professional installation if unfamiliar with opener repair. Always confirm compatibility by checking the exploded parts diagram or serial label documentation for your exact Marantec model to verify that 102276 is the correct replacement part.