LiftMaster K32-37349 Gear Reducer and Brake — Specified SL3000U / SL3000UL Drives

The LiftMaster K32-37349 is the gear-reducer-and-brake service assembly identified in documented SL3000U and SL3000UL slide-gate operator parts drawings. It is separate from the motor, external pulleys, drive sprocket and limit-switch components. Match the complete model and installed drive arrangement before ordering; a legacy SL3000 Omni reducer is not automatically interchangeable with this assembly. The integrated brake function also makes the repair scope different from a generic gearbox-only purchase, so the existing release and stopping behavior require inspection during diagnosis.

Compatibility — Models, Versions and Exclusions

Check the Reducer, Brake and Gate as One Repair

Gearbox noise, loss of movement or unusual stopping can involve the reducer, brake, belt, pulley or shaft connections. Have a qualified technician identify the failure before choosing a combined assembly. Record the complete operator model and photograph the existing drive, including the brake arrangement and related wiring or linkage. Similar family names do not establish that an older gearbox has the same service configuration.

Inspect the gate track, wheels, chain and structural supports during the repair. A new reducer and brake cannot correct a gate that rolls poorly or an improperly aligned drive. Secure the gate before disconnecting the transmission, since removing drive or brake components can change how it is restrained. Follow the model-specific service instructions for installation and final stopping and travel checks.

Specifications and Product Identification

Before Ordering

• Record the full SL3000 model and existing assembly reference.
• Match K32-37349 in the correct generation’s service drawing.
• Inspect the brake arrangement, external drive and gate rolling condition.
• Confirm package contents and required installation and maintenance instructions.

Package Contents and Separate Requirements

This listing identifies the gear reducer and brake assembly. A motor, external pulleys, belts, gate-drive chain, limit assembly and complete operator are not promised as included. Confirm the current package for mounting and connection pieces before ordering. The separately identified brake-service components in an operator drawing do not mean every nearby part is supplied with the combined transmission assembly.

Safety Warnings — Read Before Installation or Service

• WARNING: Gearbox removal can disconnect the gate from its drive and allow unexpected movement. Use a qualified gate-systems technician.
• Isolate all applicable power and secure the gate before removing drive components.
• Do not compensate for binding or damaged hardware by increasing operator force. Correct the mechanical cause before returning the drive to service.
• Follow the specified assembly and maintenance instructions, restore guards and verify travel, reversal and all required protection devices.

Related Products and Important Differences

• LMRRUL monitored photo eye — a separate safety accessory only where approved by the operator’s exact control revision.
• LMWEKITU monitored wireless edge kit — a separate monitored-edge system; it neither replaces the gearbox nor establishes compatibility with older controls.

Frequently Asked Questions

Does the listing include a brake function?

The manufacturer service reference identifies a gear reducer and brake assembly; confirm the current package inventory.

Is this the legacy Q015 reducer?

No. Q015 / K32-50091 is a different service reference.

Is the motor included?

A motor is not promised with this reducer-and-brake offer.

Will it repair a gate that rolls poorly?

No. Track, wheels and structural faults need separate correction.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.