WMA30 Front loader

CHECK YOUR DRUM BELT FOR CRACKS AND SIGNS OF WEAR BY TURNING TRHE BELT INSIDE OUT AND SLOWLY TURNING IT TO FIND CRACKS. THE BELT TENSION ADJUSTMENT PULLY MAYBE CRACKED OR WORN AS WELL.

Wma series are notorious for bearing failure and if i recall correctly, the only part available to repair is replacement of tub and drum assembly. if the banging is violent mit is likely that the drum bearing spider has cracked. check dampers as suggested above and if these are ok, then junk the machine

Im not suggesting this is your fault, but its worth looking at, as it cured mine, if you remove the back cover and look around the drum area and you should see small shockabsorber like struts from the drum casing to the washer body, these can become lose or even damaged, so check that the nuts havent come lose, as even half a turn will stop the vibration and banging, but while the back is off you can atleast run the machine and see for yourself the possible cause, if it's not that, apologies and i'l leave it to the specialists on washing machines.

When a machine gets old it is always normal for the vibration and banging to occur, then, after the vibration it settled down smoothly.this is due to worn fan belt .bearings worn out and the preasure on the spindle.so dont get alarm .but you will soon have to replace the washer as the banging and the vibration will get worse eventually.or change the fan belt.and replace bearings.which can be done by a qualified personel.good luck.