Could a failing Dishwasher Diverter Motor cause the WHIRLPOOL WDT730PAH to have symptom: Not Cleaning?

The diverter motor is responsible for rotating the internal disc that ports water to the upper manifold. In this model, the motor often suffers from internal gear failure or shaft seal leakage, which prevents the distribution disc from aligning with the upper wash arm supply tube. Without this alignment, the top rack receives zero or significantly reduced water pressure.

Could a failing Diverter Valve Seal (Grommet) cause the WHIRLPOOL WDT730PAH to have symptom: Not Cleaning?

This rubber grommet seals the diverter motor shaft as it enters the sump. If the seal has degraded or deformed, it causes a loss of hydraulic pressure and can lead to the motor failure mentioned above; replacing it is critical to ensure the integrity of the water path to the upper spray arms.

Could a failing Manifold Water Supply Tube cause the WHIRLPOOL WDT730PAH to have symptom: Not Cleaning?

The manifold delivers water from the sump to the top rack docking station. If the plastic housing has warped or the rear docking seal is cracked, the pressurized water will bypass the spray arm and leak back into the tub, resulting in insufficient flow to clean dishes in the upper rack.

What is the most likely root cause for a WHIRLPOOL WDT730PAH with symptom: Not Cleaning?

The diverter motor is responsible for rotating the internal disc that ports water to the upper manifold. In this model, the motor often suffers from internal gear failure or shaft seal leakage, which prevents the distribution disc from aligning with the upper wash arm supply tube. Without this alignment, the top rack receives zero or significantly reduced water pressure.

WHIRLPOOL WDT730PAH Not Cleaning

CONF	DIAGNOSIS	ACTION
93% CONF	Dishwasher Diverter Motor The diverter motor is responsible for rotating the internal disc that ports water to the upper manifold. In this model, the motor often suffers from internal gear failure or shaft seal leakage, which prevents the distribution disc from aligning with the upper wash arm supply tube. Without this alignment, the top rack receives zero or significantly reduced water pressure. SKU: W10537723	VIEW ON AMAZON #CommissionsEarned
4% CONF	Diverter Valve Seal (Grommet) This rubber grommet seals the diverter motor shaft as it enters the sump. If the seal has degraded or deformed, it causes a loss of hydraulic pressure and can lead to the motor failure mentioned above; replacing it is critical to ensure the integrity of the water path to the upper spray arms. SKU: W10195677	VIEW ON AMAZON #CommissionsEarned
3% CONF	Manifold Water Supply Tube The manifold delivers water from the sump to the top rack docking station. If the plastic housing has warped or the rear docking seal is cracked, the pressurized water will bypass the spray arm and leak back into the tub, resulting in insufficient flow to clean dishes in the upper rack.	VIEW ON AMAZON #CommissionsEarned

DIY Repair Guide

Watch exactly how to replace the Dishwasher Diverter Motor.

// NOTICE: This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.

PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.

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WHIRLPOOL WDT730PAH Not Cleaning

DIY Repair Guide