I have an older Whirlpool washer. Tonight, out of nowhere, I started hearing a loud clunking noise when I put in a load of clothes. It was the agitator that circulates the clothes making the noise. I put my hand on it and it stopped spinning with hardly any pressure. I think it is coming free from whatever mechanism makes it agitate in the bottom of the washer tub (top loader). It doesn't look like it is rotating and ratcheting as much as normal either. Anybody know what this might be? I haven't attempted to look at it yet (hoping it miraculously goes away ) and would rather have some idea of what I'll be taking apart and what to look for. Thanks!