It's not actually a square hole, rather a square bolt head. I had this issue when a pulley fell of my sable a while ago. It's right in the middle of the tensioner. I ended up having to use a serpentine belt tool because I had maybe 2" of space between the wheel well and the actual bolt. Leverage is key
every easy!!!!!!!!!!!!!!!!!!!! you just need a 3/8 rachet or a breaker bar to remove it ( it has square, there put the 3/8 rachet and move the rachet to you and the tenssion will be rerove and it will come out easy as a piece of cake Here is a page that has a picture and detailed instructions. http://www.rldassociates.com/zx2/howto/belt.htm THIS WILL HELP!!! here are a few key words to help other people to find this site zx2 belt zx2 serpentine belt zx2 v-ribbed belt escort zx2 serpentine belt how to install zx2 accessory belt
Usually it takes a 3/8 or a 1/2 inch rachet on the spring loaded tensioner. simply put the rachet in the square hole and loosen the tension to get the belt off.
If it is like my 97 transport, 6 cylinder, the way to change the belt is as follows: Locate the tension wheel near the center of the pulleys. Using a 3/8 inch rachet (without a socket), place the end into the square hole of the tension wheel. Using the rachet, push the wheel towards the firewall to loosen the tension on the belt. Remove the belt and release the tension. Follow the diagram to replace the belt reversing the process. Make sure the grooves in the wheels line up with the belt grooves.
Install everything back on the car except for the alternator belt. You are going to need a long socket bar and a 15 mm socket. A socket bar is basically a rachet without the rachet mechanism. It has the square end on it to go into the socket at a 90 degree angle. Set up the belt on all the pulleys except for the alternator. Put the socket and bar on the bolt that is holding the tensioner on and twist it like you were tightening it. This will move the tensioner and give you slack so you can put the belt onto the alternator pulley. Once it's on and aligned, slowly ease off the bar until the belt goes tight. Remove the socket and bar and you are done.
8mm square socket
From a standard socket wrench, the square part that fits inside the socket also fits in the center of the idler pulley (rather than buying a special tool that does the same). Fit the socket wrench (without the socket) in the idler pulley and turn to move the idler pulley and loosen the belt. Remove he old belt. Move the idler pulley again and put the new belt on. The diagram for the belt is on a sticker under the hood on the body above the grille.
the best way is use a breaker bar & cheater pipe & loosen tensioner remove belt be careful spring loaded go the same way to reinstall
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There should be a small square hole near the tensioner pully. A 3/8 socket driver will fit in the hole and then you can losen the tensioner.
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02 c5 hdi socket is in the glovebox on the left , pull out square box to expose socket.
Get a standard 3/8" socket wrench, just the socket wrench, you don't need any sockets. Look on the idler pulley bracket for a square hole in the bracket. Place the socket driver in the square hole. You can now easily move the idler pulley to relieve the belt tension and remove the belt. I found that my 3/8" ratcheting socket wrench was too thick in profile to fit in the rather narrow space on my 1998 Cavalier. So, I bought and used a 3/8" breaker bar which happened to have a thinner profile and it fit and worked very well. There is also a thin profile tool made especially for serpentine belts with little clearance at the tensioner.
To remove the calipers just knock out the two square pins that are on the top and side. The best way i found to do this is use a long socket extension. put the insert end (the end you would put the socket on)against the pin and tap on the other side .
square socket can be purchased from any good motoring shop (halfords, motorworld etc)
with a 1/2" rachet or breaker bar placed in the square whole on the tensioner pully, you push (from passenger side to drivers) which will release the presure on the belt. Might want to draw a "map" of how the belt goes cause it ain't obvious when its off the car.
This is really a pretty easy repair. The idler pulley maintains spring tension to keep the belt tight. You will probably find a square hole in the hub assembly of the idler pulley. You can fit your 3/8" rachet directly into the hole, then with only a little force, be able to rotate the pulley in the direction that pulls it away from the serpentine belt. Remove the belt while holding rotational force to the idler pully. Once the belt is off, you can slowly release tension, until your ready to reverse the operation for fitting up the new belt.
When you look down to the engine from the front of the vehicle, you should notice that one and only one of the pulleys appears to be on an arm of sorts- this is the tensioner. If you look at the tensioner, you will notice a square hole. If you put a rachet, or breaker bar into it, you can move it and losen the belt. then remove it, and replace it. If your sticker showing how it is to be run is faded, or otherwise illegible, then you should take note of the way that it runs before removing the belt.
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tension pullys have a small square in the side that a rachet will fit in.. they are "spring loaded" and if you put a ratchet in it you should be able to pull it back with ease and remove the belt hope this helps
The ventures serpentine belt can be removed and replaced by releasing pressure on the tensioner. Just take your large socket wrench and insert the square head into the square slot on the tensioner and use it to release tension on the belt. The tensioner is the triangle-shaped arm located just a bit below the alternator. Carefully remove the old belt and then replace the belt as shown on the diagram located on the belt guard. You can put most of the belt in place before using your wrench again to release the tension and finish putting the belt in place. It helps to have a long wrench. I used a socket extension that I attached to the handle. It took me less than 5 minutes. It was pretty much like resetting the chain on a 10 speed bike.
No speacial tool required. Use a standard socket driver I believe its 3/8 but may be 1/2" There is a square punched out of the tensioner to receive it. Applying torque with the socket wrench will relieve tension to allow you to slip the belt off or the new belt on. repair in minutes Cheers
put a socket wrench,on belt tensioner,there should be a small square hole there,that fits a socket wrench,lift upwards,careful not to slip wrench,then belt should lift up and come off,slide on new belt,lift upwards again,then let down slowly once belt is on.your done.easy.
Most likely there is a spring loaded device called a belt tensioner. There is a pulley on it with a bolt or square inset in it. sometime a socket or 3/8" drive extention can be used to move the pulley and release the tension on the belt.
Place a 3/8 drive racthet in the square itting on the tensioner assembly - push to the left (towards passenger compartment). The serpentine belt is now loose and can be removed. To remove the tensioner - loosen the retaining bolt located in the center of the tensioner mount assembly - use a 15 mm socket turn CCW - until it comes out .. When re-installing take notice of the PIN and the SLOT on the mount against the Engine - the pin fits into the slot.. I found that my rachet head would not fit into the narrow space. I used the 3/8" breaker bar that came with socket set that I rarely use. I also used a piece of 3/4" copper pipe (or whatever fits over the handle) to leverage the tensioner easier and allow my free hand to work the belt off the alternator.