How do I change the alternator belt on a 740 Volvo?

To change the alternator belt on a Volvo 740, first disconnect the negative battery terminal to ensure safety. Then, loosen the tensioner by turning the adjustment bolt, which allows you to remove the old belt. Install the new belt by routing it according to the belt diagram typically found on a sticker in the engine compartment. Finally, tighten the tensioner to ensure proper belt tension before reconnecting the battery and starting the engine to check for proper operation.