I have a 4 yr old Zanussi FJS1425W. It became noisy and there was play on the inner drum. Diagnosis - shot bearings.
Took the whole drum assembly out of the machine, having taken the water connections of the various points. Make sure you squeeze the front of the white pins which hold the shock absorber onto the drum, whilst pulling from behind. They slide out intact. Removed the belt and the motor - undo the bolts and slide it forward off the mounting lugs. Removed the drive wheel at the back, removed the 17 bolts from the two halves of the drum and then examined the rear bearing. Two balls completely vanished, race shot. Drifted the spider shaft out of the bearings and removed the spider from the inner drum. (Drifted = large hammer + copper shaft + lots of sweat). Seal had worn and allowed water leakage onto bearings. They had gradually corroded and caused the problems. Play on drum was not enough to allow damage to the outer drum from the inner drum. Spider shaft completely eaten away and needed to be binned!
£30 for new bearings, £50 for a new spider and shaft.
Reassemble the bearings, making sure the mounting points are clean and rust free. Cover the shaft between bearings with grease (and the new seal too).Use some silicon grease on the seal between the two halves and carefully reassemble.
17 bolts back on the drum, replace drum into machine. Connect hoses and locate all springs etc.
Couple of hours work. £80 and some sweat. No need for new 1/2 drum, heater etc as some poster suggest. Cheaper than £200+ and cheaper than buying new machine.
Maybe someone will find the instructions useful. I would have done.
If you have/can work on a car knowledgably, you can change the bearings.
You need Allen keys, socket set, hammer, grease and some cable ties. Otherwise, get a deep wallet.... 
Took the whole drum assembly out of the machine, having taken the water connections of the various points. Make sure you squeeze the front of the white pins which hold the shock absorber onto the drum, whilst pulling from behind. They slide out intact. Removed the belt and the motor - undo the bolts and slide it forward off the mounting lugs. Removed the drive wheel at the back, removed the 17 bolts from the two halves of the drum and then examined the rear bearing. Two balls completely vanished, race shot. Drifted the spider shaft out of the bearings and removed the spider from the inner drum. (Drifted = large hammer + copper shaft + lots of sweat). Seal had worn and allowed water leakage onto bearings. They had gradually corroded and caused the problems. Play on drum was not enough to allow damage to the outer drum from the inner drum. Spider shaft completely eaten away and needed to be binned!
£30 for new bearings, £50 for a new spider and shaft.
Reassemble the bearings, making sure the mounting points are clean and rust free. Cover the shaft between bearings with grease (and the new seal too).Use some silicon grease on the seal between the two halves and carefully reassemble.
17 bolts back on the drum, replace drum into machine. Connect hoses and locate all springs etc.
Couple of hours work. £80 and some sweat. No need for new 1/2 drum, heater etc as some poster suggest. Cheaper than £200+ and cheaper than buying new machine.
Maybe someone will find the instructions useful. I would have done.
If you have/can work on a car knowledgably, you can change the bearings.