The LiftMaster 144C0038 Pulley (8" OD) is a genuine OEM replacement sheave for select LiftMaster commercial and industrial door operators that use belt-driven power transmission. It helps maintain correct drive ratio and belt tracking, supporting smooth, consistent operation of the operator. Use this factory part to replace a worn or damaged pulley in compatible LiftMaster trolley, hoist, or jackshaft operators and restore reliable performance with OEM fit and function.
With an outer diameter of 8 inches as designated in the part title, compatibility is model-specific—verify your operator’s parts manual or LiftMaster documentation to confirm that part number 144C0038 is specified for your unit. Installation typically involves relieving belt tension, removing the existing sheave, aligning the new pulley with the mating sheave, setting belt tracking and tension to manufacturer guidelines, and securing the pulley using the prescribed hardware and torque values. For safety, disconnect power and follow lockout/tagout procedures; support the door and ensure proper counterbalance before testing. LiftMaster recommends installation by a qualified door professional. This OEM component is ideal for maintenance and repair scenarios where the original bill of materials calls for LiftMaster 144C0038.