I’ve been looking through the archives to see if there are any photos of the Norge/Montgomery Wards dryers disassembled but so far have found nothing. I’ve heard they have a blower/fan as big as the drum but haven’t seen any photos of one taken apart. I am sure they are simple machines inside since some of the older models would have a belt going to one of the rollers for the drum drive but again haven’t seen one taken apart and disassembled for cleaning/lubrication.