Nissan Sentra 1.8L tensioner pulley removal

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how do you remove tension off surpentine belt tensioner - Nissan Forum

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Feb 20, 2009 - 4 posts - ‎2 authors
2008+ Nissan Rogue ... QR25 2.5L Engine Engine Discussion: 2002+ Sentra SE-R and SpecV ... how do you remove tension off surpentine belt tensioner ... changed these before, but which way do you turn the tensioner, how ... Replacing the Water Pump on a '04-'08 Maxima *DIY*
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How to Replace serpentine belt 2008 Nissan Altima ...

? 11:29
https://www.youtube.com/watch?v=5NchA85pnAE
Jul 2, 2014 - Uploaded by nivekoch
How to Replace serpentine belt 2008 Nissan Altima In this video i'll be going ... 2005 Nissan Altima 2.5L serpentine belt tensionerreplacement ...

Video Tutorial:
https://youtu.be/h4qGOJ5PpSw

The easiest way to replace serpentine \ drive V belt on 2007-2012 Nissan Altima 2.5L 4 cylinders engine:
- remove front wheel on passenger side
- remove plastic splash cover
- user 14mm offset wrench to turn belt auto-tensioner in clockwise direction
- block auto-tensioner from moving using locking mechanism right above the auto-tensioner pulley
- slide the belt off the smooth non-grooved water pump pulley first
and then take the belt completely out
- when installing a new serpentine belt, first hook it onto all pulleys except for water pump pulley. Hook it onto the water pump pulley last
- make sure the new belt is hooked up properly onto all of the pulleys
- unlock the auto-tensioner
Original OEM Part #:
Amazon com OEM 11720 JA00B Nissan Altima Serpentine Belt
Follow this diagram to route the new belt on 2.5L engine:

They may very well need be replaced. Can't say for sure because I can't see it. Look at the belts for any cracks. Serpentine belts has a spring loaded tensioner. There may be a limit gauge on the tensioner that would show when the belt is stretched to its recommended limits. Pulley bearings can go bad and make noise. Plastic pulleys do wear out.

First look at the diagram that is located in the engine compartment somewhere that shows the routing of the serpentine belt. it should show you which one is the tension idler. All you have to do is place a socket on the nut of that pulley and pull it to release the tension and therby releasing the belt so you can remove it. If you don't see a diagram draw a picture of the belt routing for reference. Look for the pully that does not work any of the visible components. I have included the link to a video that displays the procedure.



http://www.youtube.com/v/Wg1AX77xEBQ?fs=1&hl=en_US"> name="allowFullScreen" value="true">http://www.youtube.com/v/Wg1AX77xEBQ?fs=1&hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385">

My sincere apologies for the severly delayed response.
I am personally going back to answer your unanswered questions.

I do not know if you still need this information, however I am answering it in case you still do.

Click on the following direct Link. It has several Diagrams for your Belt depending on your engine size and options (AC/No AC etc.) AND whether you have Tensioners OR Locking/Adjusting Bolts/Nuts.
IF APPLICABLE: These point out the direction of rotation for the Tensioner in order to loosen and reinstall the Belt.
IF APPLICABLE: These also point out where the Locking and Adjusting Bolts/Nuts are, to loosen the belt and remove; and reinstall the Belt and TIGHTEN.

Standard Rules to Removal the Serpentine Belt with a Tensioner:
1. Find the Tensioner(s). (See Diagrams on Link)
2. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT (on the Pulley or Arm Base) OR the OPENING (3/8ths or 1/2 inch square opening) rotating it\moving it away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
3. Remove the loosened belt off one of the other more easily accessed Pulleys.

Standard Rules for Installing the Serpentine Belt with Tensioners:
a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them

Again my apologies...
Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.Com!

http://www.2carpros.com/car_repair_information/year/2004/make/nissan/model/sentra/2004_nissan_sentra_drive_belt_routing_diagram.htm

first of all you don't have to loosen the pulley,this will no solve the problem,well you already loosen the adjuster,good,bot thing you have not done i will tell you now,on the power steering pump where the belt pass there is also a bolt that hold it ,you must loosen that also,then after you will see the pump moving on the two position that means you will see the belt loosen on 1 position an d the position it will tight the belt,try that man.............

you must locate the belt pulley tensioner and loosen it until you can remove the belt, after you remove replace belt and then tighten tensioner until belt is tight

loosen nut in center of idler pulley ..then loosen tension bar with 12mm socket til it walks away to remove belt

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.

Hi gj,

It's easy and you won't need a prybar.

• Get a 14mm or 9/16" socket and a long handled ratchet or breaker bar.
• For putting the belt on: Get the belt around all the pulleys except the A/C compressor or Alternator.
• The tensioner pulley is on a spring loaded arm. Get your socket on the center nut of this pulley.
• Slowly pull the ratchet toward the center of the engine. The pulley will pivot on the arm allowing you to get the belt on the final pulley.
  
• Slowly release the tension.
  
• You're done

Mike