I determined the pump was not working by running the ice maker. After it started a cycle, I could fell the underside of the cold plate to insure it was indeed cold, but no water was flowing.
First, be sure the water pump electrical plug is in., it releases by pressing together the tabs at the ends, not sides.
To replace the pump, turn off the water supply and cover the drain hole at the bottom of the ice bin so you don’t drop parts down it. The screw-plug at the bottom of the water tank or a quarter will do.
Remove the water tank below the pump by taking out the thumbscrews at both ends. You can then see the hose at the bottom of the pump. If it is off, that may be the problem.
To remove the pump, pull the fill hose to the left out of the slot and bend it behind the pump to get it out of the way. Unplug the electrical connector and the pump hose. There are three ¼” hex head screws, teo on the side wall, one in back. The middle one is the hardest to access. I used both a nut driver and a socket wrench with a 4” extension.
When installing the new pump, be sure to plug in the electrical connector, the discharge hose at the bottom and position the fill tube as you found it. Forget any of these and nothing works. Re-install the water tank, replace the drain plug and turn on the water supply, in that order.
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