LG model WM2010CW - 8 years old - started making noise, especially during high speed spin, but could even be heard during low speed spin. No water leakage, just an unusual noise that sounded like the bearings were failing. I followed the AppliancePartsPros.com video ( https://www.youtube.com/watch?v=Y-eAvoBI59Y), which was clearly for a similar unit, but with more features that our own. Thank you very much for the good photography.
Replace the two bearings, the main seal, and the tub o-ring. I decided to take the unit apart before ordering, just to be sure of the parts needed, and I re-inserted screws back in their holes as each was removed.
The failed seal was the apparent cause of the noise. A crack in the seal rubber near the outer edge had formed, and the metal underneath had corroded. Soapy water and bleach passing the seal apparently caused the inner bearing to lose lubrication, making the noises that was heard.
No problems during disassembly, and the main shaft dropped out of the bearings with a single smack on a wood block, just like it was shown in the video. The seal pried out easily. The bearings came out with some very hard smacks with a hammer on a steel rod that reached through one bearing to knock out the opposite bearing. The bearings were mounted in a machined aluminum bearing holder that was permanently mounted or formed into the plastic tub half, and the steel rod was very hard on the machined aluminum holder -- pinning the aluminum slightly. If I could do it again, I would've used an aluminum or soft brass rod to knock out the bearings, thereby reducing the nicks in the aluminum holder.
I cleaned everything after disassembly and took special care to clean the bearing holder surfaces. I heated the aluminum holder with a heat gun for about ten minutes until it was very warm to the touch, hoping this would enlarge the holder slightly to make bearing installation simpler. I used a very little sewing machine oil to lubricate the outer bearing surfaces and aluminum holder before inserting the bearings. As others recommended, I used the old bearings as drivers to tap the new bearings into place using a lightweight hammer. That went very well. I put a very little silicone o-ring lube on the seal, being careful to leave the factory grease inside the seal alone (the factory grease looked like lithium grease). Pressing the seal in place with my fingers did not work well -- one side popped upward as the other was pressed downward to be flush with the recess. Instead, I found a 2-9/16" OD jar lid -- just smaller than the OD of the seal -- and placed it over the seal, allowing me to press downward with the palm of my hand on the jar lid to push the seal evenly into its recess.
Reassembly went well also, just like the video. I decided to torque the tub screws evenly to 40 in-lb, the rotor bolts to 80 in-lb, and the main shaft bolt to, well, tight as I could while holding the stator.
But I'm no expert, as evident by the two screws left over... I take comfort that the two screws are sheet metal screws and not machine screws. After a rinse-and-spin cycle to clean out the tub, the washer is now running nearly silent again.