jemmy, wrecking bar, small crowbar.... better than a big screwdriver for levering things...
most vee belt drives have one of the pulleys mounted on slots so the pulley can be moved to tighten the belt, on the fan belt the alternater is the adjustable one. on the power steering belt the ps pump is on slotted mounts so it can be moved.... the fan belt has to come off to let the ps belt come off...... the belt has to be tight to drive without slipping and squeeling, using a small crowbar to lever the adjust able pulley to tighten the belt makes it easier to get it tight enough.