The only part which could make a grinding noise is the ice maker motor gears. Looks like the ice maker has to be replaced.
Your fridge does not have a built in water filter. Check behind the refrigerator for an in line filter. If there is one - it has to be replaced.
If there is no water filter and you would like to install one, let me know and I will supply you with the part number.
- The part number for the ice maker is
AP178365
Here are the break down diagrams for the Maytag refrigerator
Model PSD2350DRW
Gene.