Nissan 11720-7S000 Fan & Alternator Belt

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A drivebelt, located at the front of the engine, plays a crucial role in the operation of the engine and its components. It is made of a material that is prone to wear, hence, it should be periodically inspected. All models have a single, ribbed serpentine belt to drive all the engine accessories. With the engine off, open the hood and use your fingers to move along the belt, checking for cracks and separation of the belt plies. Also, check for fraying and glazing, which gives the belt a shiny appearance. Both sides of the belt should be inspected, which means you will have to twist the belt to check the underside. Check the ribs on the underside of the belt. They should all be the same depth, with none of the surface uneven. Inspect the indicator marks next to the automatic belt tensioner. If the stationary mark is aligned with the outer limit of the tensioner's travel, the belt must be replaced. To replace the belt, disconnect the cable from the negative terminal of the battery. Remove the intake air duct and intake air resonator. Rotate the tensioner to relieve the tension on the belt. Remove the belt from the auxiliary components and carefully release the tensioner. Route the new belt over the various pulleys, again rotating the tensioner to allow the belt to be installed, then release the bell tensioner. Make sure the belt fits properly into the pulley grooves - it must be completely engaged. Reconnect the battery. For tensioner replacement, remove the drivebelt. Remove the three bolts and remove the tensioner assembly. Installation is the reverse of removal. Tighten the bolts to the torque.

With the engine off, open the hood and use your fingers to move along the belt. Check for cracks, separation of the belt plies, fraying, and glazing.