N1gger
Remove the old, damaged idler pulley and replace it with a new one.
The idler pulley on a 2003 Nissan Sentra 1.8 is changed by removing the engine accessories, removing the drive belts, and loosening the retaining bolt. The pulley can then be removed from the vehicle and a new one bolted into place.
Remove the belt, then remove the bolt holding in the idler pulley.
Replace the tensioner assembly as one piece.
If the idler pulley is frozen, it is high time to replace the timing belt and the idler. And while that job is being done, consider replacing the water pump and thermostat.
Take the belt off, take the bolt off of the idler pulley, take the pulley off, put a new one on replace the bolt, and put the belt back on
Are you talking about the "idler pulley"? They are quite simple to change. Loosen the serpentine belt by using a socket on the center of the tensioner pulley, slide the belt off the idler pulley, use a socket to pull the center bolt of the idler pulley and replace the pulley with a new one.
Try to replace only bearing #6203 2Z inside of 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"
Belt is worn out, or the idler pulley is defective. Replace the belt and inspect the idler puley.
go to youtube and type in ericthecarguy and change pulley
Remove your idler pulley first. it is the pulley right next to the alternator.