I changed the 2 ball bearings, bearing seal, tub seal and spider arm. The 2 ball bearings were broken and the spider arm were badly corroded. I replaced all these items and reassembled the washing machine back. The repair process probably took about 5 hours of total labor. I performed the repair in 2 days: taking multiple breaks/rest, cleaning the dirty parts, washing the tubs, re-watched the instructional video, etc. Now, there is no more whirling noise (esp. loud during the spin cycle) during the operation of the washing machine. The machine is as good as new again. It saved me hundreds of dollars by repairing it myself. I was contemplating on just buying a new washing machine. But, the repair was actually not that bad to perform. I watched the repair videos several times. Before I started the repair myself, I felt a little bit overwhelmed by the steps involved in the disassembling and reassembling the washing machine. However, once I started working on the disassembly of the washing machine, things got progressively easier. After I replaced the broken parts, the reassembling process was so much easier and actually enjoyable. In the end, I was glad that I repaired it myself. After I repaired my broken LG front loading washing machine, I appreciate the engineering design of the LG machine. I also watched other videos for Samsung front loading washing machine. In my opinion, the LG design is superior to the Samsung's. The instructional repair videos were really indispensable and instructive. Very great job.