Question about 2002 Chevrolet Suburban
Which pulley tensions the serpentine belt
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Posted on Jan 02, 2017
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
Can u turn the nut in the opposite direction that u have been trying? U need a lot of leverage to get enough tension off to remove the belt. If u have enough room, add a pipe to the end of your wrench, u will need a lot of room to move the tensioner enough. U might have better luck buying the wrench made for that purpose at a parts store. I think I paid about 25 a couple years ago, I couldn't fit a regular socket and wrench on the tensioner, it was a very tight space.
Posted on Sep 29, 2008
Use a 3/8" socket end to rotate the tensioner counter clockwise. It may seem stiff, but that's a good thing... you want the tension to be there. After it's off the tensioner the belt will pretty much just come out of place and off the other pulleys. ***make sure you orientate the belt as it was originally (ac or w/ ac)...diagram should be on the front shroud.
Posted on Oct 16, 2009
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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