More than likely your back support bracket has deteriorated - the clanging noise is either your heating element inside the bottom of tub hitting the mounting bracket or chunks of metal that fell into bottom of tub hitting the basket. Unscrew you filter at the bottom and looks for chunks of metal or plastic shavings from the outer basket. It will be a dead give away it's shot! Also open the front of the Washer and see if you can lift up on the Stainless Steel basket - if it gives more than 1" or more the back support bracket either is cracked or deteriorating drastically! Let us know what you find!