It is probably a motor bearing. My Lavatherm had a constant noise while running. It had a clogged drainage in the fan, causing water in one of the motor bearing and after som time the bearing worn out.
I don't know if it is necessary to replace both at the same time since the roller on the left, which is above the heat chamber, seems to go out twice as quick as the other one. On this dryer I've replace several rollers, the glides at the front, the tensioner pully, the motor....and today I replaced the plastic blower fan. The dryer is 7 years old and most of the parts I've had to replace are due to poor quality parts in my opinion. I think they design replacement items in appliances for job security reasons. :-(
I have this dryer and have had the same problem TWICE. I would be willing to bet, based on my experience that the support roller(s) in the back that are under the drum are bad. The good news is they are simple to replace IF you are at all handy! Just carefully remove the hex screws starting at the bottom front and progressing the the ones holding the drum in place (10 all together). Be sure to mark which connector goes in which spot for the door closure and the light (oh, good idea to shut off the power!!)
Pullin the drum forward will get you access to the drum support roller and its bracket. They are sold as a set (arond $20) and the replcements are a FAR better quality than the original!! The original has a hardened nylon wheel riding on a steel shaft - did NO ONE see THIS as a major wear issue?? The replacemnt part has a steel sleeve in the roller, much better.
BIG FYI, if you are replacing one, you SHOULD replace them both, otherwise you WILL be doing this again (wish I had done THAT)
Might be what is called a jockey wheel, which is fairly cheap to replace
Get specific on the noise and potential related causes. Then tell how to repair. "It's best to call an appliance repair service" is not the caliber of advice people expect from the web.
The dryer is 14 months old and when I use it, empty or full, sounds like a brick is tumbling inside
Some noises are caused by objects bouncing around inside the drum, or by loose, vibrating dryer parts. Scour the interior of the drum for loose objects. If the noise is being caused by defective parts-- notably a worn or defective drum belt, idler pulley, support roller, or worn motor bearings-- it's best to call an appliance repair service. If your dryer runs but doesn't tumble, this situation indicates that something is wrong with the switch, motor, belt, or mechanism that turns the drum. Call a repair service.
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