Most of the time a tumble dryer will work like a dream but, as with all appliances, occasionally there will be technical problems.
If your tumble dryer is making a banging, whining (or other strange noise) it's best to diagnose and sort out the problem. It could be the result of a number of things, but what you certainly don't want to do is ignore it.
Here are the most common reasons for your tumble dryer making odd noises.
Coins and keys
One of the most common reasons for a banging, rattling or clanking is keys or coins left in pockets - so always check them before you put any clothes in the tumble dryer. More often than not you won't hear anything until the dryer cycle is in full spin.
If the dryer is vibrating or shaking during spinning, check to make sure the dryer's sitting on a level surface. If it's fitted with height adjusters on the front legs, adjust them accordingly to ensure the machine is level as this will often reduce or eliminate the banging sound.
If the tumble dryer is noisy when its turning and the whole appliance is shaking and rumbling, it could be indicative of a problem with the drum bearings, which help the wheels turn freely and easily.
If the banging noise is continuous when the drum is turning then it might be problem with the drum itself. If the noise is a metallic one, it could be the result of the drum scraping on something inside the machine. You could always check the drum visually for any marks or dents.
If the tumble dryer is emitting a high-pitched screaming or whining noise it could be a sign that the motor bearings are wearing out.
Tension pulley wheels
If there's a squeaking noise coming from the dryer it could be the result of wear on the tension pulley wheels. This occurs more frequently on older models...or try this link..
Common Tumble Dryer Problems