I removed the front panel of the dryer by removing 2 screws and lifting it up and out. Then I removed 4 screws from the bracket holding the tub in place. I had previously removed the 4 screws from the rear inspection cover so I reached in and released the spring loaded belt that turns the tub and then removed the idler pulley wheel. The tub just lifts out at that point, exposing the 2 Drum support rollers in the rear.
I removed the 2 rear drum support rollers and decided to order 2 of those plus 1 new retaining clip, an idler pulley wheel and a new idler arm. I also ordered 2 new tumbler bearing kits, the plastic and cork strips the front of the drum rides on.
I placed my order online and was told I would have the parts the next day. I received an email the parts had shipped about an hour later and they arrived the next morning at 9 AM. After I placed my order I decided to ask a technician if the bearings on the 3 rollers needed to be greased as I installed them. I sent an email and received my answer in minutes. "No grease is advised because they would gather lint and wear out even sooner." Full Disclosure: I did apply some dry spray lube to the shafts and let it dry before installing the rollers. In my 80 year old world, metal to metal always needs some sort of lubrication.
It was a little difficult for me to reach back inside of the dryer to replace the retainer clips on the drum support rollers so I laid the dryer down on it's back on a couple of 4" x 4"'s and let gravity give me a hand with the clips as well as placing the drum into the opening and replacing the tub bracket. (Replacing the plastic and cork tumbler bearing kits in the tub bracket requires a pop rivet gun.) I stood the dryer up, reached back in at the top on both sides to position the belt in the proper place and went around to the back to hook up the new idler arm and pulley wheel.
After checking by hand to make sure everything was turning properly, I put the front back on, plugged it in and turned it on. The machine was, once again, running silently, good as new.
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