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Servicing the Water Pump
In most dishwashers, the water pump is located under the lower sprayer arm. This component pumps the water through the dishwasher. The pump has two impellers, top and bottom. These, as well as other components, can become clogged with food or detergent. Here’s how to disassemble the pump:
Step 1: Remove the cap that holds the sprayer arm on.
Step 2: Remove the sprayer arm, the screen, the pump housing, a bolt, the upper impeller, the food disposer blade, a spacer plate, the impeller hood, a flat plate, an O-ring, and the lower impeller. Lay the parts out in order as you disassemble them so that you’ll be able to reassemble them properly.
Step 3: Clean the parts thoroughly with a mild detergent solution. If any parts are worn, replace them with new ones made for the dishwasher.
Step 4: Replace any seals, such as the O-ring or other washers, with new ones.
Step 5: Reassemble the pump, keeping the parts in order.
To reach the water pump, remove the sprayer arm and screen and then the pump housing. Remove the bolt, and the pump components can be disassembled.
On some dishwashers, the lower impeller serves as a drain pump. This type of system usually has a reversible motor; machines with nonreversible motors have drain valves, as detailed previously. If your machine possesses this impeller pump system, and the water will not drain from the dishwasher, clean the lower pump impeller. This may solve the problem. Otherwise, call a professional service person.
Repairing the Motor
If the dishwasher motor malfunctions, don’t try to fix it yourself. Call a professional service person to make repairs or replace the motor. Before you call for service, however, you should check to make sure that the timer is working and that the dishwasher is receiving power.
Don’t let water leaks, a noisy cycle, soap spots, or other problems keep you from using your dishwasher. Most problems can be handled yourself if you follow the guidelines mentioned in this article.