From under the front vehicle on jackstands.....The bottom wheel of the u belt combo connecting the motor to the ac compressor, is "the" ac compressor that well has a bolt in the center of it. You must first remove the front skid plate (if equipped) from underneath the radiator and front of engine. It is easy, only 4 bolts. You will see a long tightening bolt along side of ac compressor. Loosen this "without" fully removing the nearly 4 inch long bolt. Now access the center bolt on the ac compressor wheel that the belt runs along. Loosening this bolt allows the the belt wheel to slide up and remove the old belt... if it is still on. Frequently with this piece of junk vehicle you will simply be putting a new one on. With the wheel loosened, reattach new belt so that the belt slides completely into the groove of both motor wheel and ac wheel. While pulling down on ac wheel, tighten the center bolt on it. Now re-tighten the long adjuster bolt "not too tight, it will break". If belt squeeks when you start car and ac, then slightly tighten the long one a little more. Replace skid plate. Done.
The ac belt has a tensioner that is accessed from below, and takes a tensioner tool to loosen. Remove the serpentine belt, release tension on the ac belt then the belt can come off for replacement.
buy a belt, loosen the tensioner, replace belt
Release pressure on the tensioner. Remove the belt, paying attention as to how the belt is routed. Slide the new belt on using the same routing.
The "serpentine" belt does not serpentine. It runs the alternator and water pump only. To change you will need to work from underneath. If you have AC remove the AC belt by loosing the AC adjuster bolt and sliding the compressor over. If you have to take the AC belt off better change it, they are cheap and you don't want to do this again for a long time. Loosen the alternator adjuster pinch bolt. Some Fireos has a adjuster screw, some don't Move the alternator to loosen belt. Remove and install new. Tension belt to recommended tension on packaging on new belt. Reinstall AC belt, use the tension instructions on the package.
If the belt only drives the ac compressor, loosen the compressor mounting bolts to let pressure off of the belt. Remove the belt and put on the new one. Pull the compressor to the side and put enough pressure to tension the belt as you tighten the bolts.
You can't just change the a/c belt, its a serpentine belt, go to your shop, it should cost between $20-$50, I never needed one for my Murano yet.
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.
The AC comp should have a bolt(s) to loosen that will release tension & maybe addit'l idlers. Do that, slip off belt, put new 1 on, pry against the belt with a crowbar & tighten bolt.
Loosen the tensioner pulley. The tensioner pulley will make the belt loose. The belt can easily come off. Reverse the process to put on a new belt.
Find the idler tensioner pulley and retract it. You then will be able to easily remove and replace the belt.
The AC Belt connects to the crankshaft pully outer pully the one in front of the crankshaft belt
Yes change your serpentine belt every 60,000 miles this is important it turns your alternator,ac compressor,water pump. If that belt breaks while driving to work or in the rain your in trouble.