Unplug the dryer, check for drum movement, replace the felt seal or sliders if necessary. Check for problems with the drum support rollers, the drum's rear shaft, the mounting bearing and the idler pulley.Continue Reading
To ensure a safe working environment, move the dryer away from the wall and unplug it.
Open the dryer door, and grasp the drum firmly. Try to move it up or down. If it moves, there may be parts that need replacing.
Lift the top of the dryer. Slide a putty knife between the top of the dryer and the front panel to push the two clips to the back, and release them. Remove the top, and put it in a safe place. Unscrew the screws on the inner right and left top corners. Pull the front panel free of the drum. Put the front panel in a safe place.
Check the felt seals or sliders to see if they are worn and need to be replaced. Unhook the drive belt, and remove the drum. Make sure the drum support rollers are not loose or warped. Replace the "C" clips if necessary. Replace the idler pulley, rear shaft and mounting bearings if they look worn.
Put the dryer back together, and test it. If it still squeaks, consult a professional.