That roller over the heating element will NOT overheat if the dryer has the correct exhaust hose on back and the vent run is clean. Ever notice the little sticker on back that says "Do not use duct with a thin foil wall or plastic duct
"? If the vent run is restricted, the roller above the heater will fry in a week or so. (This also means that the dryer is likely cycling on hi-limit as well.)
Notice the brown rusty powder on top of the heater box?? That is from all the excess moisture that the dryer cannot vent out due to a restriction which causes corrosion on the bearing shaft....very clear evidence the vent is blocked. The excess moisture blown back thru the rear felt drum seal causes the roller lubricant to be displaced very soon.
Zoom oil is still the best recommended product for drum roller shafts. If you get called back, it's because you missed a venting issue.
Here's an excerpt from page #1
of the installation instructions:
I fought this battle with many of the local retail dealers here in Austin who had become complacent with their installs, and were using foil slinky duct on the new dryers. Since I was with Customer Service at the time, I got to see all the failures that occured (usually within 8 months) due to vent problems. We finally began contemplating charging these dealers back for the service calls where the installation was not done according to the book. I started carrying the flexible metal vent on my truck just to help some of these folks out, since the dealers were still being hard-headed about using the right stuff. (They said the foil junk was cheaper to buy)
Yeah it might be cheaper, but those dudes don't have to go back and fix the dryer when it failed 8 months later. Their favorite line is "Its under warranty, you have to call Maytag"
That gave me the opportunity to see this form of abuse first-hand. Of course, there's always the dark side...perhaps these dealers wish to inspire a little "planned obsolescence" into their service program. Rest assured, there will be repairs needed soon enough with the wrong setup. The good stuff is pictured below, and while it might cost a buck more, will serve the dryer well over the years.