Bearing needs to be replaced
Bearing siezed. Buy new.
There is a small bearing in there and sometimes they just fail. The bearing can't really be changed so you'll have to buy a new or used idler pulley.
I suppose you could, but these idler pulley's are not that expensive to replace the whole thing. They do fail (a weakpoint for these motors), but usually give some audible warning, also check for loosness. Do your best to purchase the steel idler pulley and the bearing will come with. When these items do "let go" they can leave you stranded, if you see a problem replace as soon as possible. Hope this helps. "G"
You can, for about 10% of the price of a new pulley, but you need a bearing press or hydraulic press to do it properly. A new metal pulley usually costs around $30, but the bearing can be obtained for $3 to $4.
It could be a bearing in an idler pulley.
Try to replace only bearing #6203 2Z inside of pulley.
Take off belt, remove bolt in center of pulley, replace with new pulley (comes with bearing). Reverse to install Take off belt, remove bolt in center of pulley, replace with new pulley (comes with bearing).
Depending on the sound, it could be a slipping belt or a worn pulley bearing. A slipping belt is typically caused by a belt that needs adjustment or by a weak idler spring. A worn pulley bearing can be any of a number of things, the bearing on an alternator, an idler pulley bearing... who knows until you get into it. Also, sometimes a worn heater motor will make a terrible noise when it's cold, as can a radiator fan motor.
An accessory drive belt idler pulley bearing going bad.
you probably have a bad bearing
I don't believe there is an idler pulley on that model, just a tensioner pulley