To replace the bearings you need to split the plastic drum that you are talking about. It is held together by lots of 8mm headed screws. Some are hard to get access to but you can get them out. You will need to take the springs off take care to support the weight of the drum and lower it on to the dampers. Now carefully lie the machine on it's front mark and unplug all the wires cut the tie that holds the wires to the outer drum unbolt the 2 bolts that hold the motor to the back of the drum unclip all the hoses that attach to the rear of the plastic drum. The damper pins need to be removed form the drum using one hand feel for a push-in clip at the back of the pin push it in and pull the hexed end of the pin out with both pins out the drum will lift out turn it upside down to expose the inner drum get help, have them hold the outer drum while you pull thr inner drum out you should now see the inner bearing get a bucket sit the outer drum on it and drift out the bearings
ahakira
January 2007