Hotpoint 9901 WASHER DRYER YEAR 1987!?

Loud Knocking coming from drum area on spin.
I fitted new drum bearing a few years ago .
The big drum pulley is tight and no bearing movement and no bearing noise from the pulley end.
But I feel freeplay and noise when moving the stainless steel internal drum.
Assuming the bolts have not come loose ,will this be a stress cracked spider/mount or broken welds on drum?
Any website for diagram of machine parts?
Are parts available?