Nissan 11720-BV80A Alternator Belt

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Nissan recommends renewing the belt whenever it is removed, along with the automatic tensioner, and suggests that both should be replaced every 90,000 miles or 6 years, regardless of their condition. The auxiliary drivebelt is located on the right-hand side of the engine and should be inspected periodically due to its susceptibility to failure over time. A basic check for obvious faults can be performed from the engine compartment, but a thorough inspection requires access from below, necessitating the front of the car to be jacked up and supported on axle stands, followed by the removal of the right-hand roadwheel and wheel arch liner. With the engine off, inspect the entire length of the drivebelt for cracks and separation of the plies, turning the engine to move the belt for a complete view, while also checking for fraying and glazing, as well as inspecting the pulleys for any damage. To renew the belt, turn the tensioner clockwise to release tension, then lift the drivebelt from the pulleys, noting its fitted position. If the belt is removed, it must be renewed. Unbolt the tensioner unit and install a new one, ensuring the retaining bolt is tightened to the specified torque. Hold the tensioner clockwise while fitting the new belt around the pulleys, ensuring it is correctly located in the grooves. Rotate the engine several times to check the belt alignment, then reattach the wheel arch liner and roadwheel, lowering the vehicle and tightening the roadwheel nuts to the specified torque.

Turn the tensioner clockwise with a 16 mm spanner or socket, hold the tensioner in the released position, slip the belt off the pulleys, and mark the direction of rotation if reusing the belt.