A pulley is a wheel with a groove and a the belt is what runs through those grooves which spins the pulley. The pulley spins which turns a pump in a Power Steering pump or coil in a alternator.
The AC Belt connects to the crankshaft pully outer pully the one in front of the crankshaft belt
CHECK THE IDELER PULLY OR BELT TENSIONER PULLY.
There is a belt tensioner (Drive pulley) on top of the serpentine belt, That is the only thing holding the belt tight. Use a wrench or vice grips or socket to hold the pully bolt and lift up, (CAUTION) the pully is spring loaded and if not careful will cause injury if fingers are anywhere near it if it slips out of your grip. Just raise the pully up and the belt will come loose, after you get the belt off, you just slip the new belt on the same way you took off the old one. (NOTE) once the belt is on release the pully so that the belt is tight but make sure that the belt is on the ac pully, the power steering pully then the fan pully then the drive (crank shaft) pully then the alt pully and that is all. good luck. also you can click here for the diagram of the serpentine belt diagram. http://www.fixya.com/cars/t1940043-digram_serpitine_belt_1992_oldsmobile The diagram is for an 1992 Oldsmobile but that is the same as the 1994 ford e-150
if ur talking about a serpetine belt u remove the old one by releasing the tension on the belt by put a 1/2 drive ratchet into the tensioner pully and release the tension on the belt and remove it then follow the diagram on how to run the belt and then pull the tensioner and place belt with that pully into the pully drive run and then release and ur new belt is on
To tighten a loose drive belt, find the pully that is connected to the belt. Tighten the pully and then hold the belt in place using the adjuster belt. Check out the related video to see an example of how this is done.
wrap the belt around the pully to hold pully still
Locate the idler spring tension pully below the power steering pump. The pully is pressing down on the belt and has to be pulled away from the belt so you can remove belt from the power steering or alternator pully. You need a socket that fits the bolt on the tension pully and a socket wrench with a 2 to 3 foot pipe extension. Attach to bolt head, apply counter clockwise pressure enought to loosen belt to allow enough slack to remove belt. Do not get your fingers between the belt and any pully when removing. You might not like it. To reinstall. Route the belt and release the tension again enough to put the belt back on the last pully.
Draw a scetch of the belt path first first. Remove the 4 bolt pully that will not allow the removal of the belt. Install new belt and replace pully.
What is the procedure for replacing the belt tenison pully on a 97 Bonneville v6 3.8 engine
Serepentine bels do not have tension adjustments, there is a tension pully That is preloaded with a coil spring in it. If the belt is loose, the pully spring may have lost it tension. Replace the pully assembley.
first you should release the belt tension pully and remove the belt. Then the idler pully has a bolt through the center remove the bolt and the pully should come off.
it depends on what belt it is worse if it is the alternater belt and a pain in the butt if its timing the serpentine belt goes on the front 2 pullys from the top pully you take the belt down and you will se a smooth pully the back side of the belt hits that and goes on the back pully (this is all on the passenger side) alternater belts go behind the serpentine belt and timing belts are in the engine the dots represent the belt its hard to read but it is the best i can do the larger 0 are the main pullys the smaller o is the smooth pully .