LiftMaster K94-37849-2 Motor Assembly — SL595203U / SL595203UL Service Reference

The LiftMaster K94-37849-2 is the motor-assembly reference identified for the SL595203U configuration in the supplier offer and for SL595203UL in the manufacturer repair information. Match the exact operator suffix, nameplate and installed electrical arrangement before ordering. It is separate from K94-37849-1 used for another motor configuration. Similar housing or part numbering does not establish identical motor power, supply or mounting requirements. Select the replacement by the complete part number and the installed equipment configuration. A similar photograph or a shared LiftMaster brand name does not establish interchangeability. Confirm the applicable service drawing before ordering so the repair addresses the correct component and its related mounting, connection and operating requirements.

Compatibility — Models, Versions and Exclusions

Identify the Assembly and Plan the Repair

Record the full operator and motor labels before selecting the replacement. A motor complaint can also involve power-board, brake, wiring or mechanical-load problems. Have qualified personnel identify the failed function and inspect the drive before fitting a new assembly.

Use the exact current nameplate and instructions for supply, phase, lead connections, mounting and rotation. Do not transfer specifications from the -1 motor or another SL595 model. After service, verify the original fault, normal travel and every required protection response under controlled conditions.

An electrical symptom does not identify the failed component by itself. Have qualified service personnel inspect the supply, wiring, connections and equipment condition before replacing parts. Record existing labels and terminal references with power safely isolated. A replacement should restore the documented circuit arrangement; it should not be used to change operating voltage, defeat a protective function or compensate for a mechanical load that the equipment cannot safely move.

Compare the delivered item with the approved service reference before installation. The installer must obtain the equipment-specific wiring, mounting and commissioning instructions rather than infer them from the appearance of the part. Keep conductors clear of moving components and reinstall the intended covers. After the repair, check the original complaint and the equipment’s required operating and safety functions; a successful power-up alone is not a complete service test.

Specifications and Product Identification

Before Ordering

• Confirm full SL595 model and suffix.
• Match K94-37849-2 in the exact motor table.
• Record the existing motor nameplate and mounting.
• Diagnose brake, power/control and mechanical faults.

Package Contents and Separate Requirements

The offer identifies the motor assembly. Reducer, brake kit, power board, complete harness, enclosure and operator are separate unless expressly included. Confirm current mounting and connection pieces. A parts drawing showing several motor alternatives identifies model-specific choices and does not make all of them interchangeable or part of one package.

Safety Warnings — Read Before Installation or Service

• WARNING: Electrical service can expose hazardous voltage and moving equipment. Use qualified service personnel and electrical personnel where required.
• Disconnect every applicable mains, battery and auxiliary supply before work. Follow the equipment instructions for stored energy and safe isolation.
• Motor circuits can contain hazardous voltage. Match the full nameplate and phase arrangement; never change protection to overcome a mechanical fault.
• Restore covers and wiring protection, then complete the model-specific functional and safety checks before returning the installation to normal use.

Related Products and Important Differences

• CPS-U monitored photo eyes — separate protection devices for approved commercial-door controls; match the operator and environment.
• TDC12X1BMC MAXUM trolley operator — a complete-operator comparison, not evidence that this legacy service part fits MAXUM.

Frequently Asked Questions

Is -1 automatically equivalent?

No. Match the exact model-specific motor reference.

Is the gearbox included?

No reducer is promised.

Can I choose only by the SL595 prefix?

No. The complete model and electrical arrangement matter.

Will it fix a binding gate?

No. Mechanical resistance must be corrected separately.

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.