I have a Whirlpool dryer where the drive motor after running some time slows down speed considerably and then returns to normal .
This repeats over and over while the dryer is running.
The blower output is reduced substantially and the tumbler speed goes down as well.
Seems to occur after the dryer has been on for some time.
The drive motor is the type where the blower is screwed on to one end of the shaft and the other end has a pulley for the tumbler belt.
Any help is appreciated.