LG WM9500HKA - VERY loud "whirring" noise during spin

[KCNC06]

My LG WM9500HKA has started making extremely loud noise during the spin parts of the cycle. Whirring is the only way I can think to describe it. No knocking, grinding, rattling. "Jet engine" might be another way to describe it though I haven't been close to jet engines so don't have personal experience there. It does sound like it's spinning MUCH faster than usual even on the low spin speed. It also takes much longer to stop a spin cycle by pressing "pause". 

I've done some searching online trying to get an idea of what might be causing this and haven't found any answers about this machine specifically but most info seemed to suggest the bearings or a worn belt/pulley. We've taken the machine apart to replace the drain pump motor several times and I honestly don't remember seeing anything that looked like a belt or pulley, but maybe those are hidden way in the back? Though, looking at the exploded parts diagram thing in the service manual, I didn't see anything that looked like a pulley or belt there either. Which leaves the bearings. Bearing? Whatever.

We haven't taken the machine apart yet to try to see if we can see anything that looks like it's worn out or falling apart. That's on the agenda this evening. I'm not sure if you can tell that the bearings thing is worn out by looking at it though. I'm wondering if there's anything else we should be looking at or for while we have it open. Any suggestions on what would cause a VERY loud whirring during the spin cycle? 

If it is the bearings thing, the machine is getting replaced. Not worth spending that much money replacing a big, expensive part when something else will likely wear out soon.

[dfphoto]

jet engine noise is usually the bearing look up how to test for bad bearing and then you'll know.

[KCNC06]

After looking closer at the parts diagram, and opening up the machine, we're pretty sure it has to be the bearings. There's just a motor and bearings back there apparently. LOTS of magnets. Doesn't seem like it could be anything other than bearings.