Dryer knocks while drum is spinning

My electric dryer knocks while it is spinning. The knock is coming from the top middle to the top right side. It is not a constint knock. It is loud sometimes and faint sometimes. Also how can I remove the top to view and or repair the area of the knocking. Thanks to anyone who responds. Jim

Open the dryer door, ook up and there are 2 screws, take those out and you can remove the top.

Thanks for the tip. But I dont see any screws after opining the door. Not above the door or inside. The drum is flush with the inside walls. Any other thoughts? Thanks.

Get me your model# I was guessing since you did not post one

Thanks again .The model # is DBL333EB3WW. Jim

You need a putty knife, there are 2 spring clips to release to get the top off. As your looking at the dryer about 2-3 inches from the edge on eachside, slide your putty knife in. You will feel where the spring clips are. Push the knife in on one side and you’ll feel the top release, do the same for the other side and it comes right off.

The clips are at the front of the dryer as your looking at it.

Sorry. I had to run out for a while. I got the top off and I dont see anything that the bowl could be scraping against. Let me ask this. I had to take what appears to be the ground wire off the top to completely remove the top. Can I put that ground wire in another piece of the sheet metal and start the dryer to look and listen to it with the top off? Or would you advise not to do that. Thanks again. Jim

I got it badfish. After I took the screws out to remove the front, the bowl seperated from the front revealing a small metal piece of my daughters bathing suit that was stuck in the molding that pieces the bowl and the front together. I removed the piece of metal, put it all back together and it isent making any more noise. Thanks for your help. I couldent have done it without you getting me started with taking the top off. Have a good day. Jim

No problem, sorry, I got busy changing an evaperator on a Refer. Glad you found it…