Samsung Washer Drain Pump Motor (120V 60Hz 80W, 4.25x3x4.25-inch, w/Impeller & O-Ring) (Samsung OEM)

Description

Genuine Samsung OEM Samsung Washer Drain Pump Motor (120V 60Hz 80W, 4.25x3x4.25-inch, w/Impeller & O-Ring) – Part DC31-00187A

Part Number: DC31-00187A

Replaces: AP6977256, DC31-00178A, DC31-00178D, DC31-00187D, PX3516-01, 4958525, PS12742622

Always verify compatibility using your appliance model number before ordering.

Samsung Washer AC Drain Pump Motor Assembly (Part # DC31-00187A)

Restore lightning-fast drainage cycles and protect your laundry area from graywater backup with this Genuine OEM Samsung Washer AC Pump Motor Assembly. This factory-certified electrical motor (Part # DC31-00187A, which updates and replaces older inventory codes like 3996144, AP5966596, and PS11720787) serves as the exact power plant that physically drives the drainage and recirculation lines in your appliance.

Unlike a full pump assembly kit, which includes the massive white plastic housing and filter trap casing, this targeted replacement module consists of the precision AC electric motor and the spinning impeller fan blades. It isolates the specific component that mechanically fails over time. When the washing machine’s main controller triggers a drain phase, it routes a standard 120-volt AC into this motor’s copper windings, generating a magnetic field that spins the internal rotor and impeller at high speed to force trapped water out of the drum and up into your home’s standpipe.

If a loose object like a coin slips past the mesh trap and jams the fan blades, the motor will instantly seize. This continuous electrical current with nowhere to go quickly overheats the windings, melting internal insulation or blowing the motor’s built-in thermal fuse. This triggers immediate operational failure, including a machine that stalls out mid-wash with a drum full of dirty water, an active “5C” or “nd” (No Drain) error code, or a hot, electrical humming smell coming from the lower kick-plate.

Quick Info:

• Compatibility: Precision-engineered for modern high-efficiency (HE) front-loading and top-loading Samsung washing machines.

• Component Design: Compact AC motor body assembly equipped with an integrated 3-blade or 4-blade fluid impeller, a protective terminal wire connector shroud, and twist-lock or screw-down mounting tabs for mating with your existing white filter housing.

• Fixes Common Issues: Resolves “5C”, “5E”, or “nd” drainage fault codes; a washer that sits dead and hums when it should be draining; clothing that emerges dripping wet; or a machine that refuses to initiate high-speed spin cycles due to remaining water weight.

• Difficulty: Intermediate. Accessible from either the front lower panel or the bottom base of the cabinet, requiring you to separate the old motor from the plastic filter assembly.

⚠️ An Invisible Wear Pattern: The Oscillating Impeller Shaft

When a drain pump motor fails, it doesn’t always die silently. A classic sign of a failing DC31-00187A motor is a washer that drains perfectly fine on tiny loads, but flashes a “5C” code on heavy loads. > Over years of operation, water can seep past the internal rubber shaft seal, washing away the factory lubricating grease. This causes the metal rotor shaft to wallow out its internal plastic sleeve bearings. With a light load, the impeller spins fine. But under the heavy head pressure of a full tub of water, the loose shaft deflects sideways and magnetically locks up against the motor wall. If your pump makes a loud rattle or structural buzz during operation, the shaft bearings are completely worn out, and the motor must be replaced.

Step-by-Step Replacement Guidelines:

1. Absolute Power Isolation: You must completely unplug the washing machine’s electrical power cord from the wall outlet or shut off your home’s dedicated circuit breaker to eliminate all high-voltage shock hazards before handling internal electrical terminals.

2. Drain the Stagnant Water: Open the small decorative access filter door on the lower front-left corner of the machine (on front-load models). Pull out the small black rubber auxiliary hose, pull its plastic plug, and let all trapped water empty completely into a shallow pan or tray. Twist the large circular debris filter counterclockwise to pull it out and confirm the interior housing is free of obstructions.

3. Expose the Pump Housing: Lay top-load models carefully onto their rear panel (cushioned by a thick moving blanket) to reach the open floor pan. For front-load models, unbolt the lower kick-plate panel or remove the front panel assembly to expose the white plastic pump casing secured to the floor pan.

4. Isolate the Motor Block: Locate the gray or black electric motor cylinder (the DC31-00187A) mounted directly to the side of the white plastic trap structure. Unplug the plastic electrical wiring harness block from the terminal spades.

5. Separate the Motor from the Casing: Depending on your specific model configuration, the motor body is secured to the white plastic housing by either three Phillips head screws running around its perimeter flange or a twist-lock interface. Unthread the screws, or depress the small plastic locking tab and twist the entire motor body counterclockwise about 45 degrees to release it from the housing bayonet tracks. Pull it straight out.

6. Mount the Replacement Module: Ensure the rubber O-ring seal on your new genuine factory replacement motor is seated completely flat in its tracking channel. Lightly moisten the O-ring with a drop of liquid dish soap to help it slide smoothly into place. Push the new impeller head firmly into the housing opening, secure it tightly with the original screws or twist it clockwise until it locks into place, snap the electrical connector back onto the terminal blades, and reassemble the cabinet.