Re: candy suspension
I’ve seen wear in the top pivot pins before. Knocked badly. Swapped for new pins – all sorted. This also works when the tub pivot holes are worn.The sheet metal suspension units can bind when worn causing a knock; take off one end and push / pull test for resistance.
On Candy / Hoover machines check the drum pulley – the “D” on the drum shaft can round out the centre hole so they can clonk; sometimes they are quite loose, even had the belt fall off as the pulley bolt was so loose.
Hope that helps!
Steve.