Samsung Dishwasher WaterWall spray arm motor / geared motor DD31-00013B, Fixes WaterWall spray arm does not move during the wash cycle
Genuine Samsung geared motor that turns the belt to move the WaterWall spray arm forward and backward inside the dishwasher tub. Documented specifications from a parts retailer identify a 4-pin Molex connector, 120 V, 8.0 W, 30 RPM, and D-shaped shaft.
Confirm your full appliance model number before ordering.
Is This the Right Part?
✅ Cross Reference Information
Common Symptoms
- Poor or uneven cleaning, especially on one side of the rack
- WaterWall belt does not turn or slips off the motor gear
- Grinding or humming from the lower tub area during washing
- Dishwasher completes a cycle but cleaning performance remains poor
Check Before Replacing
- Disconnect electrical power before inspection.
- Check the WaterWall arm and track for visible obstructions or binding without forcing the mechanism.
- Inspect the drive belt for breakage, cracking, stretching, or slipping off the motor gear.
- With power disconnected, verify that the motor wiring connector and harness are fully seated and show no visible damage.
- If the belt and mechanism appear intact, use the appliance's approved test procedure or service documentation to observe WaterWall movement; do not assume the motor is faulty from symptoms alone.
Pro Tip
Part Details
Installation Notes
- Disconnect the dishwasher from electrical power and shut off the water supply before servicing.
- Wear protective gloves when accessing the motor and WaterWall assembly.
- Verify the appliance model before installation.
- After access is gained, reconnect the wiring harness securely and ensure the belt is correctly seated on the motor gear before reassembly.
- Follow the model-specific service documentation for removal and reassembly; do not force the WaterWall mechanism.
Verified Compatible Models
DW60M9990AP/AA, DW80H9930MO/AA-0000, DW80H9930US/AA-0000, DW80H9930US/AC-0000, DW80H9930US/AC-0001, DW80H9940US/AA, DW80H9940US/AA-0001, DW80H9950US/AA, DW80H9950US/AA-0000, DW80H9970MO/AA-0000, DW80H9970US/AA-0000, DW80H9970US/AA-0001, DW80H9970US/AA-0002, DW80H9970US/AC-0000, DW80H9970US/AC-0001, DW80H9970US/AC-0002, DW80J7550UG/AA, DW80J7550UG/AA-0001, DW80J7550US/AA, DW80J7550US/AA-0000, DW80J7550US/AA-0001, DW80J7550US/AC, DW80J7550US/AC-0001, DW80J7550UW/AA-0001, DW80J7550UW/AC, DW80J9945MO/AA-0001, DW80J9945US/AA, DW80J9945US/AA-0001, DW80J9945US/AC, DW80J9945US/AC-0001, DW80J9945US/AC-0002, DW80M9550UG/AA, DW80M9550UG/AA-0000, DW80M9550US/AA, DW80M9550US/AA-0000, DW80M9960UG/AA, DW80M9960UG/AA-0000, DW80M9960US/AA, DW80M9960US/AA-0000, DW80M9990UM/AA, DW80M9990US/AA, DW80R9950UG/AA-0000, DW80R9950UG/AC-0000, DW80R9950US/AA-0000, DW80R9950US/AC-0000, DW80R9950UT/AA-0001, DW80H9930MO/AA, DW80H9930US/AA, DW80H9930US/AA-0001, DW80J7550UG/AC, DW80J7550UW/AA-0000, DW80J7550UW/AC-0001, DW80J9945MO/AA, DW80J7550UW/AA, DW80J9945US/AA-0000, DW80R9950UG/AC-0001, DW80R9950US/AA-0001, DW80R9950US/AC-0001, DW80R9950UT/AA-0000, DW80R9950UG/AA-0001, DDW24M999UM, DDW24M999US, DDW24T999BB, DW60M9990AP, DW80H9930MO, DW80H9930US, DW80H9940US, DW80H9950US, DW80H9970MO, DW80H9970US, DW80J7550UG, DW80J7550US, DW80J7550UW, DW80J9945MO, DW80J9945US
Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.
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Kitchener, Ontario N2E 1W8
All brand names are the property of their respective owners and are used for compatibility reference only.
