Customer Questions and Answers for Upper Spray Arm (Top Rack), 1 by Whirlpool

Robin, Based on the description it sounds as though the issue will be caused by a a wobbly spray arm and would need to be replaced.

Hello Bill, If the upper spray arm isn't spinning freely, you need to investigate as to the reason. Is it binding or is it a water pressure issue? If it is binding, it isn't a bad idea to replace it and the retaining pins 8193504. If it will spin but isn't spinning during operation, you should check the filters and chopper assembly W10083957V for clogs and damage. The probe WPW10082831 attaches to the upper rack assembly at the manifold and the retainer does hold it in position.

Mel, " Removing the Inner Feed Tube and Lower Spray Arm The Inner Feed Tube is held in place by two (2) metal clips. One is located on the inner top of the dishwasher tub. The second is located on the back of the dishwasher tub. 1. Remove the two (2) dish racks from the dishwasher tub. 2. Unsnap the inner feed tube from the two (2) metal clips securing it to the dishwasher tub. 3. Rotate the rear feed cap ¼ turn clockwise. 4. The entire inner water tube assembly and the lower spray arm assembly can now be removed from the dishwasher tub." After you check and clean any debris, etc. from the tube arms and screens, and you put everything back together, start the dishwasher and let it fill and wash for 1 or 2 minutes, then open the door, the water level should be to the bottom of the heater element if the dishwasher is filling proper, and the hot water temperature needs to be 120 - 130 Dgrs. F. check it with a thermometer. If the water is not hot enough, the longer the heat delay lasts, causing longer cycle times.