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Need to take out the alternator and can't find any thing to relieve the tension of the belt

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  • Cars & Trucks Master
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Year make and model ? If it is a serpentine belt, there should be a belt tensioner pulley you move.

Posted on Jul 11, 2013


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Posted on Jan 02, 2017

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SOURCE: serpentine belt

the belt is being pulled by a spring loaded pulley. this pulley could be lift by using an exact box wrench that would fit at the front nut and turn the wrench to the left. the pulley would then raise and you can slide the belt off the pulley. be careful when releasing the pulley because the tension is really big.

another precaution also is to remember where the belt loops on the pulleys. it is very hard if you don't take a note on that. there are a lot of combination but only one will work.

tnx 4 using fixya.


Posted on Sep 08, 2008

  • 149 Answers

SOURCE: serpentine belt

you need a 3/8 drive socket wrench put it in the tensioner square and pull it it should free the belt or if you have one with a socket just put a socket on the 3/8 not remove the bolt thats attached to the engine you will spring the tensioner and it will no longer work..u want to use the pully that the belt is actually on

Posted on Oct 27, 2008

  • 1498 Answers

SOURCE: How do I replace a serpentine belt for a 2001 nissan sentra.

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

Posted on Dec 14, 2008

  • 2 Answers

SOURCE: need to replace alternator in a 1989 chevy s10 blazer

With a serpentine belt, there is a tensioner pulley, so use a socket on a breaker arm placed on the bolt of the tensioner. Turn it until the belt goes slack. It helps to get someone else to hold that in place while you remove the alternator.

Both serpentine and V-belt are described here, and there are diagrams :

Posted on Jan 08, 2009

  • 468 Answers

SOURCE: 2003 Chevy Suburban-replace alternator

Ok, Alternators are a breeze on these things. There are two bolts that hold it on, and 2 sets of wires. If you haven't taken anything apart yet, and the belt is still on it, here's what to do. You will want one of those rubber or elastic bungee cords, about 2 and a half feet long(this makes it easy). Hook that bungee cord to your hood somewhere, so that it hangs down. Hook the other end on the serpentine belt right next to the alternator pulley. If you need to prop the hood up with a stick or something to keep it up, do so. Pull up on the belt, and watch the pulleys. The one that probably has a plastic pulley on it that moves up and down(this is the tensioner) is the one that you'll put a deep well socket in the middle of with a ratchet, and turn counterclockwise. This will make the belt go loose. Now you can work the belt off the alternator pulley, and once you get it off, the bungee cord will keep it in place, so you don't have to look at the diagram. Otherwise, if it comes off, there is a sticker just under the hood either on the fan shroud or the radiator support that has the belt diagram. Now, you can disconnect the battery, pull the rubber boot down off the nut and post on the back of the alternator, remove the nut and wire, and then unhook the wire from the side of the alternator. Now, you can remove the two bolts that hold the alternator on. You Will need to pry the alternator off at this point, as it fits really tightly in place. A socket extension or a large flat screwdriver works really well for this. Once you get it off, put the new one on exactly as you took the old one off. Note, you will have to release your tension on the tensioner at some point; i just ease it down, or if I can pull it off, wedge it somewhere where it won't loosen very far. Remember, on the tensioner, you're not trying to take the nut off. All you're doing is using it to move the tensioner arm. That's all there is to this job. Sometimes it can be stubborn with the prying part, especially getting it into place. Hope this is what you're after, and if you need more info, leave a comment for me.

Posted on Feb 22, 2010

Testimonial: "Great advice on the bungee cord!! Well written advide and easy for a novice to follow. Thanks"

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