Food grinder not working

Food grinder will not turn. Have installed new grinder part however the screen continues to clog. Does the part in the pump slide forward during operation or how to the two mate. Or is the gear on the pump just broken. John

Here are your parts
Replacement parts for WHIRLPOOL KUDM01TJBT1 | AppliancePartsPros.com
Often if you click on the picture of the part a new page will open with more views of the part. Click on the view you want to enlarge/select it. This will let you see what new parts should look like.

Here is a service manual
https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/4e8b0d2df77cd7e585256cd800643b6d/$FILE/KD01.pdf

Check that the end of the volute which mates with the chopper is OK.
Check that the volute on the pump is not loose/stripped from the motor’es armature.