A broken belt could be the reason why you have a not tumbling Whirlpool 27 inch gas dryer. Let say that you load the dryer with wet clothes and turn it on to dry the clothes. If when you check the clothes they are still wet, you need to check the tumbler driving belt to see if it is broken or stretched.
To check it do the following. Set the timer on the beginning of a drying cycle, open the dryer door and with one hand push in the door switch actuator to turn it on. Push the start switch to turn the motor. If the motor runs ok but the tumbler won’t turn, you need to check the belt.
Disconnect the dryer from the wall outlet. Remove the lint filter, and the 2 screws under the lint filter cover. Now open the top panel and lean it against the wall.
Look on top of the tumbler and grab the belt to see if it is broken, if it is broken you will need to replace it.
To replace it do the following. Remove the two 5/16 screws holding the front panel, Pull the front panel out to clean the front of the tumbler and lift the front panel to disengage it from the 2 holding hooks and remove it.
Click Here To See The Video