Yeah, Halo of Heat models, you need to take the entire cabinet off. I know, I replaced the felt seal and pretty much had to strip the machine. Well worth it though, I think.
The halo of heat in theory was good. Heat from the front in a circular distribution sucked through the clothes from the exaust and lint filter through the back. Built like German Tanks.
Capacity was a problem as washers grew larger. The halo of heat drum was limited in size, particularly depth because of the double belt and pully mechanisims in the rear to drive the thing and run the exhaust fan.
To make dryers larger, they became deeper. The imput of heat and the exaust of mosisture located at the very back, with one big belt turning the dryer and a direct drive fan to the motor became the way Maytag finally adopted the design of other dryers. The design saved space, but perhaps had some "hot spots" in the back and cool spots in the back. People wanted capacity in washers and dryers.
I still love my DG906 but I can see it's shorfalls as capacity became an issue.