Williams Comfort Products TM-391RSD Square Drive

Product Description

The WILLIAMS COMFORT PRODUCTS TM-391RSD is a replacement square drive component designed as a direct service part for the TM-391 unit. Square drives are mechanical interface components used to transmit rotational force within heating appliance assemblies, commonly found in wall furnaces and space heaters. This part is intended for service technicians performing maintenance or repair work on compatible Williams heating equipment. At 0.2 pounds, it is a compact, single-unit replacement part suited for quick field or shop servicing.

This square drive is used as a direct replacement part in Williams TM-391 heating units. It is appropriate for residential heating service applications where the original drive component has worn or failed. Installation is performed by qualified HVAC or heating appliance service technicians during routine maintenance or component-level repair of wall-mounted or floor-mounted gas heating units.

Key Features

• Direct OEM-style replacement for the TM-391 square drive
• Lightweight construction at 0.2 pounds for easy handling during service
• Sold individually as a single-unit replacement part
• Designed to restore proper mechanical drive function in compatible Williams heating units

Compatibility

Designed as a direct replacement square drive for the Williams TM-391 unit. No additional compatible model numbers were specified in available product data.

Installation Notes

Installation should be performed by a qualified HVAC or heating appliance service technician. Before servicing, shut off all gas supply and disconnect electrical power to the unit in accordance with the appliance manufacturer instructions and applicable local codes. Inspect the surrounding drive assembly for additional wear before installing the replacement part. Reassemble and verify proper mechanical operation before returning the unit to service.

Technical Specifications

• Weight: 0.2 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 1
• UPC: 662459261328

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: TM-391RSD