Just replaced the water pump and didn't write down the diagram for putting the belts in the correct order. Can someone please provide me a diagram for a 3.9L V6 2W drive with a/c and power steering. Thank you so much.
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The serpentine belt runs all the external components (A/C compressor, power steering pump, alternator, water pump, and possible others). It has one pulley on it that is either spring-tensioned, or has an adjusting bolt. To replace the belt, you must release the tension of the belt by using a ratchet or belt tool on the tensioner pulley to take pressure off the belt, or loosen the adjusting bolt if that is what you have. The new belt must be routed correctly in order to fit properly and ensure that all driven components rotate the correct way. You are not saying what engine size your Jeep has, but I'm assuming the 4.0L six-cylinder. If that is the case, the belt routing diagram is shown below to assist in proper positioning of the replacement belt. "CS" is the crankshaft pulley.
Yes it would have been part of the job unless you have a electric water pump wich I very much doubt. Let the mechanic know what happened. Serpentine belts can be put on a diffrent way to normal & look right but be slightly loose & may come off. I always draw a diagram before removeing it if there is not a diagram on the bonnett. They should have a book or be able to look up the correct routing.
Click on the following Direct Link. I know you said Serpentine (correct spelling) Belt and this Link has Timing Belt; however this does have the Serpentine Belt Diagram and also some key instructions to putting it back-on. After going to the Link, scroll down the page (to about half-way down the page) to Diagrams: G00039904, then G50H16367, then G50J16369. In Diagram G00039904: it has the "Hinged Mounting Bracket" which has the Pulley holding tension on the belt keeping it tight. This must be loosened (NOT REMOVED) in order to get a serpentine belt back on. Then re-tightened in order to have the correct amount of tension. In Diagram G50J16369: this Hinged Mounting Bracket has Mounting Bolts which again must be loosened (NOT REMOVED) in order for the hinge mounting bracket to move - loosening the Pulley = loosening the Serpentine Belt. There are a couple of additonal Diagrams regarding the Electric Fan Mounting Bolts etc., that are useful for your reinstallation.
Under the hood you will see a diagram that shows the routing of the belt, remember where that is you will need to refer to it! Now not knowing what engine you have I will attempt to help you, most engines with a serpentine belt have whats called and idler pulley this is a pulley that's only job is to put tension on the serpentine belt, it is sometimes identified in the diagram I spoke of earlier, if not look for a pulley that goes to nothing, in other words you'll see your power steering pump, your water pump. your a/c pump etc. once you identify it you need to put a wrench on it and pull or push it and you will see it relive tension on the belt and wa la you simply apply enough tension on it until the belt is loose enough to remove then you put the new belt on by lining it up on all the acesories and relieving the tension installing the belt and letting it loose so it can apply the tension! Use the diagram to make sure you have the belt on correctly. If you have any more questions just ask!