First thing to do is fix the leak that allowed oil onto the belt in the first place. Then replace the contaminated belt with a new belt.
OR WHILE THE CAR IS RUNNING SPRAY ENGINE DEGREASER ON THE GROOVES OF THE BELT. YOU COULD TRY DISH SOAP AS WELL. IT MIGHT TAKE A WHILE TO GET ALL OF THE OIL OFF, BUT KEEP SPRAYING IT AND EVENTUALLY THE BELT WILL BE CLEAN AND THE SQUEAK WILL STOP
Remove the serpentine belt and remove the alternator. The belt tensioner bolts are under the alternator.
Remove the belt from the alternator. The belt can be removed by loosening the belt tensioner. Remove the wiring harness from the alternator. Remove the cables from the alternator. Remove the retaining bolts. Reverse the process to install the new alternator.
disconnect the battery. Remove the alternator belt then disconnect the wires. Unbolt the alternator and remove. Bolt the new alternator in then connect the wires, belt, and battery.
Loosen the alternator belt with the tensioner pulley. Remove the alternator belt. Remove the wiring harness. Remove the alternator retaining bolts. Reverse the process to install the new alternator.
Loosen the alternator tensioner bolt. The alternator belt will become loose. Remove the alternator belt. Put the new alternator belt on and reverse the process.
Remove the belt by using a 3/8 ratchet in the belt tensioner below the alternator. Insert the ratchet into the tensioner and push to loosen the belt. When the belt is loose, remove it from the alternator. Remove the electrical connections from the alternator. Then remove the 3 mounting bolts. The alternator should now be diaconnected from the engine. Installation is the reverse.
Remove the alternator belt from your 2000 Chevrolet Monte Carlo alternator. Remove the wiring harness from the alternator. Remove the alternator retaining bolts. Reverse the process to install the new alternator.
Disconnect the battery, remove all wires from the alternator, slacken the belt tensioner, slip the belt off of the alternator pulley, unbolt the alternator, and remove the alternator. Installation is the opposite of removal.
Loosen the tensioner pulley. The alternator belt will become loose. Take off the belt. Remove the wiring harness from the alternator. Remove the retaining bolts from the alternator. Remove the alternator. Reverse the process to install the new alternator.
Remove the power steering belt first then the alternator belt will go on.
Remove the belt from your 1985 Nissan 300 alternator. Remove the wiring harness from the alternator. Remove the alternator retaining bolts. The alternator will come off.
Disconnect the 98 LeSabre battery. Remove the alternator belt. Remove the alternator wiring. unbolt the alternator, remove it, and bolt the new one on. Reconnect the wiring, but the belt on, then reconnect the battery.