I have a 20 year old Kenmore electric dryer (essentially a Whirlpool). It's held up pretty good overall. About 4 years ago the motor wouldn't turn, so I replaced the motor along with the rollers, belt, and front and back bearings. Everything has been working fine since then (it was running quieter than when it was new!).
About 2 weeks ago we started getting an intermittent rumble/heavy vibration about every 10 seconds or so. It would only last a few seconds, but it would really shake the dryer. Sometimes it's worse than others.
I figured one of the rollers was loose or worn and I took it apart to check it. However, I'm not seeing anything that seems like it's out of alignment. The front and back bearings seem OK and I don't see any play in the back support rollers. The fan wasn't replaced 4 years ago; it's still the original one, but it doesn't seem loose or have any damage on the blades except a few tiny nicks and scratches.
I've done some searching using words like "electric dryer rumble", but most of the hits seem to point to worn out bearings, rollers, or blower wheel, and as I said those are all in good shape and/or fairly new. I may go ahead and replace the fan; it's about the only original moving part on the dryer.
A dryer is such a simple item, but I don't really want to have to scrap it if it's something fairly easy (and inexpensive) to replace.
Any suggestions would be appreciated.
- Mike O.