I have Sears Kenmore electric dryer I'm working on. It's 16 years old, but it's been good to us and we're wanting to keep it for a while longer. The shell, drum, heater, etc. is in good condition, but the seals were going out and it was somewhat noisy.
I replaced the front and rear drum seals (they were in bad shape), lint chute seals, belt and idler pully. The motor, blower wheel, and support rollers seemed to be in good shape. In particular, the rollers seemed smooth, no obvious wear on the shafts or wobble, so I cleaned and oiled them and put them back in. The blower blades were all intact, no chips or anything missing, so again I cleaned it and put it back. I blew the lint out of the motor, the shaft seemed to turn smoothly, the bearings and belt pully looked ok. I didn't see anywhere to oil it.
However, after putting it all back together, even though it's definately smoother that it was, it's still noisy. I know it's hard to explain it on the net, but it's similar in pattern to a car motor fast idling (not quite as loud, though ). Since the pattern is fairly fast (much faster than the drum rotation speed), I don't think it's something with the drum or seals.
I don't have a problem with replacing some more parts, but I don't want to replace anything else if I don't have to (especially the motor), but I'm not sure what to try next: rollers, blower, or motor.
Any suggestions would be appreciated.
Mike O.