I figured this out on my 2002 Dakota, Magnum V8 4.7L engine. It took me a while, and then I found the answer in a Blog.
It's actually very simply. On the passenger side of the engine there is a superfluous belt pulley. That pulley is bolted to a spring loaded cam. Put a 15mm socket on it and turn clockwise (tighten). This will engage the spring. Once you have it loose enough you can remove the belt from one of the other pulleys. The small Alternator pulley seemed the easiest. You can easily work the belt around the fan without removing the schroud. I found a guide for the belt's path under the hood towards the front. If you can't find the belt routing diagram on your vehicle, simply draw your own before you remove the old one. Also handy to remember if your belt is missing and you have no diagram, is that the grooved pulleys touch the grooved side of the belt and the smooth pulleys touch the smooth side of the belt. With that in mind, trial and error routing is much simpler, there is only one way the belt will fit and engage all pulleys properly.
It typically costs between $100 and $150 to replace the serpentine belt on a Dodge Dakota. The belt costs around $30 with the rest being labor.
The serpentine belt on a 2003 Dodge Dakota is replaced by loosening the belt tensioner and slipping the belt off. It can then be removed from the engine accessories and a new belt installed.
touch
88.50 in belt
Done automatically by belt tensioner
Its 15mm on my '97
buy a belt, loosen the tensioner, replace belt
There should be a diagram on the underside of the hood or on the radiator.
You can remove the old serpentine belt on your 2004 Dodge Ram by loosening the tensioner pulley. Put the new serpentine belt on and tighten it with the tensioner pulley.
no
Replace or tighten the A/C belt. If equipped with a serpentine belt, replace it.
Take pressure off belt tensioner and belt should slide off pulleys