Bosch WF02865 1400/ washing machine clunking on spin cycle

[dorry50]

Hi there I have a Bosch wf02865 1400 Exxcel washing machine, it is about 5 years old, it has recently started to clunk on the spin cycle, it does it when it speed up and when it slows down, I have tried moving the drum when it is empty and it makes the clunking noise when you move it backwards and forwards, I have never overfilled it (it has a 6kg capacity), in fact I probably under fill it, can you tell me what the problem is and how to fix it please
thanks.

 

[rocks1]

check suspension legs ,and is there brown water stains down the back of drum if so bearings gone could be also broken drum surport

 

[dorry50]

Hi thanks for the reply, do you mean a stain at the back of the drum on the inside, or on the outside if I took the back of the machine off?
tahnks

 

[rocks1]

remove rear panel stain should be on the outside of drum in the middle between the pully