If I remember correctly, two different belts go on the water pump/fan pulley. You must loosen the alternator and the power steering pump to get them off.

To loosen the alternator, get under the car and loosen a 14 or 15mm pivot bolt on the bottom, then under the hood is a 13mm adjust screw that you wind out, and allows the alternator to pivot back to loosen the tension.

The power steering pump, also loosen a pivot bolt, and then you have a 10 or 13mm adjustment screw that you wind out to loosen the pump.