Product review (5 stars): This did the job!
We replaced the drum rollers on our older Maytag electric dryer first. That was not the problem. Then, we found a post that suggested replacing the blower wheel. The suggestion seemed to be wrong because when we turned the drum, the noise sounded as though it came from the motor or back of the dryer. But, we went ahead and replaced the blower wheel. That did the trick. Turned out that the fitting for the wheel had wallowed out and thumped and bumped when the dryer was starting up, running, and shutting down - all were different sounds. One site that we found after the repair said that if this wheel turns freely, it needs to be replaced. So, we are now using a very old, quiet dryer. We saved a ton by spending some time and doing the repair ourselves, eventhough we replaced two parts in the process and only one was necessary. We did invest in one tool we did not have: a retainer clip remover. That made the work much easier. My husband did a great job with the best swamper available - me! (-: