Sounds like the motor coupler is starting to go. It's a plastic part (although very durable) and it's under considerable stress in spin cycle, so over time it wears out and the three parts of the coupling start to rattle against each other. It's the assembly #13 (three separate parts) on the parts diagram below . It's not a very expensive part, Sears sells it for about $20 (
Also, here is a nice coupling replacement video from AppliancePartsPros.com - use it as a reference:
Posted 3 years ago by homeowners in Appliances
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