Machines that make a God Awful noise when emptying usually have something in the pump that shouldn't be there, such as a nail screw or money. In fact anything that may have been left in a pocket.
There may be a 4" access plate which needs to be removed from the lower front face of the machine . If there is no access plate you will have to tip the machine backwards to get underneath it.
You can't do this on your own. Get your Dad.
There is usually a removable plate or cover underneath the pump which will allow you to remove the foreign object without having to take the pump of the machine. Be aware, when you remove the pump cover approx 1 pint of water will escape from the pump. Make sure the pump cover does not leak when you restart the machine. Slide a newspaper underneath next time the machine is used to check for leaks
cledlyn
June 2008