The bolt on the tensioner pulley are opposite of a standard thread. That is, righty loosey lefty tighty. I know this first hand because I stripped the threads on my pulley trying to remove it on my 94 Sub.
Yes, if the belt tension is not tight enough it won't spin the radiator fan due to slippage. Replace the tensioner pulley.
The fan belt that you need will be determined by your make and model and can be had by going to a reputable parts store and just telling them what you are looking for. You probably won't find a belt at Walmart types of places. On this forum you will find information about the belt tensioner pulley and how to change out the belt.....its an easy job but you need a ratchet and a socket of the size that will fit the nut on the front of the tensioner pulley.....you use the ratchet to release the tension on the belt so that you can slip the belt over the tensioner pulley, the last step in the process. Sorry, I don't know what size that socket is but the parts store may. By the way, the tensioner pulley is the only pulley in that mess that doesnt actually drive an engine device (such as the AC, fan, alternator etc). It is spring loaded and keeps the serpentine belt under tension so that all the other things work correctly. This is a job that anyone can easily do but it does help to have someone there to help you: one to push on the ratchet and the other to slip the belt over the tensioner pulley. Good luck
Use a prybar to release the belt tensioner. This will allow you to slip it off. To install, you may need to remove a bolt from the alternator. That is one way to do it but not on my 1992 Cherokee Limited 4.0 HO. The power steering pump was actually the the tensioner pulley. You have to loosen the base then loosen the adjusting bolt under the pump. Prybar and removing bolt from alternator would not work. In a 94 GCL I used a 10mm(?) socket on the tensioner pully and pulled right. Slack was immediate. No need for removing anything except the belt.
I have a 1992 Dynasty with the 3.3 Liter engine. The serpentine belt has a tensioner pulley that is spring loaded... it puts tension on the pulley automatically - if the belt is in place correctly the way it is supposed to go. You probably want to know how to get the belt on or off... I put a box end wrench around the nut in the center of the tensioner pulley. With the wrench over the nut, push back on the other end of the wrench with something long and thin. There isn't much room around that area but I found that a three foot piece of 1 X 4 wood board works well. You should feel the spring tension of the pulley when you push back on the wrench... it will move a couple of inches or so. It might be a good idea to have someone else push back on the wrench while you remove/istall the belt... just easier that way and probably safer too. Anyways, with everything in place correctly, no further adjustment is needed. If you have the serpentine belt off, it might be a good idea to check the idler pulley. The bearings don't last forever... ha! Mine lasted maybe 175,000 miles before it siezed up. The pulley, mounting bracket, new belt and tow truck expense was about $450 at a Dodge dealer. I think the bad bearing did make some noise occasionally before it went out but I ignored it. It finally went out on a cold winter morning on my way to work. Live and learn, I guess. Anyways, try not to ignore warning noises from your Dynasty and it will give you many more miles of fun. Gary... Princeton, MN.
If you're referring to the 4.0 I-6, there is an idler pulley located directly under the air conditioning compressor pulley. However, tension is adjusted through the power steering pump. You will have to loosen the two bolts behind the power steering pump, two or three bolts which attach to the power steering bracket, as well as the one under the front of the pulley. There is also another bolt under the driver's side of the power steering pump. This one actually controls the belt tension.
Standard rh threads
the crank pulley bolt has standard threads.
9/12
Yes, on a 3.3 or 3.8 the serpentine belt pulley does come off the tensioner arm but the bolt is left thread not right handed.
That pulley is a press fit type. There are not any threads. You will need to rent/buy some pullers for that power steering pulley.
The idler pulley is attached by a 14mm hex head bolt. Although the pulley turns counter-clockwise, suggesting that the bolt might be left-handed threads, it is in fact right-handed. A 1/2" drive ratchet with a 14mm socket will loosen the bolt if turned in a counter-clockwise direction. Be sure and loosen the belt tensioner, located below the alternator, and loosen but not remove the other alternator bolts, prior to removing the idler pulley.
Loosen the tensioner pulley. Put the belt around the alternator pulley and the tensioner pulley. Move the tensioner pulley to the right until the belt is tight. Tighten the tensioner pulley.
usually the tensioner is the "pulley that is smooth and has no sides on it. It looks like a metal wheel. you should be able to put a wrench on it and pull it away from the belt.
Tensioner assembly removes with std. thread -- pulley itself is a left handed thread Clockwise to loosen
The 1998 Dodge Dakota tensioner pulley will be the top pulley on the left-hand side of the engine. The tensioner pulley will be able to slide back and forth.
Loosen the tensioner pulley. When the tensioner pulley is loose the belt will come off. Put the new belt on and tighten the tensioner pulley.
One bolt holds the tensioner to the engine, take it off to get the tensioner off and then you can get to the bolt that holds the pulley to the tensioner.