Machine makes a loud noise during agitation. Agitator works fine. Spins fine with no noise. The noise sounds like a ratchet clicking. Someone tightening a bolt with a ratchet. The Agitator is not tight, slightly lose. But works fine.
Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=WLDSR416F0WC
Here is the agitator, click on the picture to get more info and a Q&A section.
AP3965155