How to Replace Serpentine Belt 2005-10 Chrysler 300

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In this video we're going be working with our 2006 Chrysler 300 3.5-liter V6. We're going to show you how to remove and replace the vehicle's serpentine or drive belt.

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Here are the item you'll need for this repair: 3/8 drive ratchet

Before removing your serpentine belt, always be sure that you have a belt path diagram. Normally, there's one located on the radiator support, or on the bottom of the hood. However, if yours is missing, you can use a paint marker and simply draw up what you see on the belt path.

We'll start by drawing our pulleys. The first one I see here, is the power steering pulley at the top right. We'll put a P in there. Come across, and we have little one here. This is an idler, so we'll put an I in there. Come down to the bottom left corner, we have a little alternator pulley. Coming back, we have our tensioner, which I like to draw the pivot and a little arm with a little pulley on the end so we know that that's a tensioner. That loops around, and then right between the tensioner and the idler, we have our crank, which we'll draw much bigger, put a C on there. And then right about here, we have our A/C compressor. So now we'll just draw the belt along the outside of the pulleys, comes up, goes under the tensioner, around the crank, under the A/C, and around the power steering. I'm no artist, these are not great drawings by any means, however it follows the right path. I can see all the pulleys and they're marked, so it's all we need to make sure that everything goes back on correctly.

Using a 3/8 drive ratchet, place the square drive into the square 3/8 hole at the bottom of the tensioner and rotate it clockwise to release the pressure on the serpentine belt. Remove the belt from whatever pulley is easiest to reach. Remove your ratchet, and finish removing the belt from the pulleys.

Here we have our old serpentine belt that we removed from our vehicle, and our new part from 1AAuto.com. These belts are exactly the same length; they have the same width and the same number of ribs in them to make sure that they engage all of our pulleys fully and correctly. What you want to look for when you're changing the belt is it may squeal from being glazed, cracked, dried out, or just overstretched and the tensioner can no longer pick up that extra slack. This is where you want to check for cracking in between the grooves and ribs on the belt, or if it looks dried out and brown. The back may become glazed and almost look like it's been burning from overheating. Now, this belt actually isn't too bad, I would definitely put something like this back on a vehicle. But if your belt is cracked, damaged, or making noise, this new part from 1A Auto is going in direct fit just like your original equipment, and fix you up right.

Install your new serpentine belt. The best way to reinstall the belt is by flipping it with the ribs facing the engine, and sliding it between the tensioner pulley and the engine. Then flip it over so the smooth side is touching the tensioner pulley. Wrap it back under and over the crank, under the crank and around the A/C compressor. From there, go around the outside of the power steering pump. We'll go over the idler pulley. Ensure that your belt path is correct and that it isn't snagged or hung up anywhere. We'll keep the alternator part in hand, so when we crank our tensioner, we can slide it over the pulley. Double check that your belt path is correct and fully seated. Release the tensioner and remove your ratchet.

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