Question about 2001 Nissan Sentra

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I replaced the alternator on my 2005 Nissan Sentra and now I am not able to get the serpintine belt back on the pulley and then tighten it up

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  • polishturkey Jan 04, 2009

    It is the same belt with a new alternator  1.8 engine and yes there is a diagram.  I am not able to get the belt back on the alternator pulley

  • Mike Butler
    Mike Butler May 11, 2010

    Same belt size, same alternator? What engine do you have? Do you have the routing diagram on hood or rad support or wherever?

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Ok. There should be a tension pulley on the engine that the belt runs through. You can notice it because it is not attached to anything except the engine block or a support bar. You can lift if up or push it down with a wrench or socket and wrench. It moves so it can give you space to put the belt on. After the belt is on, release teh pulley and it will tighten up (tension) your belt and your done.

If by chance you do not have this tension pulley, then you have to only put one bolt in the altenator, put the belt on like normal, pry the altenator in place with the belt on it, then put the last bolt in.

Posted on Jan 16, 2009

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  • Loosen the alternator pivot bolt.
  • Remove the bolt that attaches the alternator to the adjustment arm.
  • Rotate the alternator to loosen the drive belt and disengage the belt from the pulley. Be careful that any spacers that are used in mounting are kept with their original bolts. This will make correct reinstallation much easier.
  • While supporting the alternator remove the pivot bolt.
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CAUTION Over tightening of the alternator drive belt will cause the unit to whine and premature failure of the alternator drive end bearing, the water pump or the engine crankshaft.

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