Replacing recirculating pump on ice maker

My recirculating pump is still working but has recently begun to make a loud whinning sound when operating. Is this an indication that it is getting ready to go out, or does it just need cleaning?

Here is the Service manual.

Here are the breakdown diagrams and Replacement parts for WHIRLPOOL KUIA18NNJS3 | AppliancePartsPros.com

Gene.