Disconnect the positive terminal lead to the battery and loosen the3 bolts to the alternator remove old one and reinstall new one ...using a grow bar or prybar rest it behind the alternator upper bracket and give some tension to it causing the belt to tighten then secure bolts and reattach the + positive lead terminal ..
SOURCE: 1999 ford cougar v 6 fan belt fitting
OK, having REAL hard time looking up the diagrams today, however, given that the engine will turn (at the crankshaft) in a clockwise direction, 1) first locate the tensioner pulley(s) {there is usually only one per belt, and they are mounted to a bar/ arm that will move, SEE FIG A} AND the idler pulley(s) for each belt/ pulley track {the path over each set of pulleys as they are away from the engine face} ((e.g. if there are two pulleys on the crankshaft that are face to face, then there would be two tracks for a belt (one each) to go around all of the pulleys on that track)){e.g. #1 in FIG A is one belt track/ path. and # 3 is a different track/ path}
where #2 is the tensioner pulley in this example.
2) starting from the crankshaft, go along the bottom of the pulley towards the left of the engine face to the next pulley, if that pulley is smooth on the round part, then that means that the outside of the serpentine belt goes there, if it is grooved, then the inside of the serpentine belt goes there. and follow the path around the clock (so to speak ) for each path.
Some parts dealers will show you the diagrams for your vehicle, but some won't. the diagram(s) MAY be in your owners manual.
good luck.
where #2 is the tensioner pulley in this example.209 views
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