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How to Replace Serpentine Belt Tensioner 2003-08 Dodge Ram 1500
How to Replace Serpentine Belt Tensioner 2003-08 Dodge Ram 1500
Created on:
Tools used
15mm Wrench
3/8 Inch Drive Ratchet
1. Remove the serpentine belt tensioner
Pop the hood and secure it.
Use your 3/8ths drive ratchet to release tension from the serpentine belt tensioner.
Remove the serpentine belt and inspect it.
Use your 15 mm wrench to unbolt the tensioner.
2. Install the serpentine belt tensioner
Use your 15 mm wrench to install the serpentine belt tensioner.
With your belt routing diagram, route the serpentine belt over the pulleys.
With your 3/8ths drive ratchet, release the tension from the belt to put it over the last pulley.
Brought to you by 1AAuto.com, your source for replacement parts and the best service on the internet. Hi I'm Mike Green. I'm one of the owners of 1aauto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20 plus years' experience restoring and repairing cars and trucks like this, to show you the correct way to install parts from 1AAuto.com. The right parts installed correctly, that's going to save you time and money. Thank you and enjoy the video.
In this video we're going to show you how to replace the serpentine belt tensioner on this '04 Dodge Ram. This has the 5.7 liter Hemi engine, pretty much the same as any '02 to '08 with the same engine. You'll need a 3/8 inch ratchet handle and a 15 millimeter wrench. Right down in here I've got a 3/8 ratchet and right down in here is your tensioner and there's a square hole hiding in the middle of the tensioner. Okay here I'm just having a little trouble, I'm trying to get the wrench on there and still make sure that you guys can see, you can see the wrench actually goes into the hole there but I can't get it to lock in so I need to change my position around here a little bit, so I grab it with the other hand and get it into the hole and then you can see the wrench right there in the tensioner and then I spin it back around.
Go up on your ratchet, loosen the belt, then you take the belt of the alternator, and then slowly let your tensioner back, take off your Ok and now remove your belt, just kind of unwind through the different pulleys. Reach down, pull it out from between the power steering pulley, then got to reach down way underneath your fan here and pull it out from around the crank and then up and out. Ok so right down here you can see is our tensioner and it's a 15 millimeter bolt. You probably can't quite see the head of the bolt but its right in the middle of the tensioner. Get the bolt loose with a couple of turns, turns pretty easy with your hand. Fast forward here a little bit as I just loosen that bolt up with my hand. Ok then your tensioner comes right off. Then there's your tensioner off and that's right where the bolt is. Ok there's nothing actually wrong with this tensioner so I'm just going to put it right back on. Just do it this video to show you how to do it. Keep the bolt in it, put the bolt in and thread it a little bit, then you can push the tensioner on and it has a square and a little round pin that line it up correctly. Again, we will fast forward through this as I tighten this up with my finger.
Now, tighten up, probably should do about 50 to 55 foot pounds but I'm just going to tighten it up nice and tight with my wrench here. That's all set. Ok on this truck I couldn't locate a pulley diagram or a belt routing diagram so I kind of made one here, so when we go to install this belt first we're going to make a loop and put it down around the crank which is the largest pulley at the bottom and then going up and around the w-p, which is the water pump and then down around the power steering or the p-s, which is the power steering pulley. Up around the AC and then you want to wind it through the idler pulley, the lower idler pulley. Then to the tensioner and then you basically have a little loop that you can pull up on to the alternator when you pull up onto the tensioner. Ok to get the belt back on, I know you can't see much that's why I showed you that diagram. I'm going to put a loop down and again sorry all you're looking at is my elbow but way down underneath the crank and in between the crank pulley and the power steering pulley and then I'm going to pull a loop on top of my power steering pulley, down around the, I'm sorry, on top of my water pump pulley, down around my power steering pulley, slip it between the power steering pulley and the crank pulley then up around the AC pulley here. That goes from my crank up over my idler, bring it up onto my tensioner, this goes down underneath this idler pulley. Ok and now I have this, my hand that I can put onto the alternator. I'm going to reach in here, hook my ratchet and grab onto here with this hand, pull this hand, ok up and over, just check your belt. It's around there correctly; it's down around my power steering pulley correctly, down around the crank correctly.
We hope this helps you out, brought to you buy www.1AAuto.com, your source for quality replacement parts and the best service on the internet. Please feel free to call us toll free at 888-844-3393. We're the company that's here for you on the internet and in person.
Tools used
15mm Socket
Ratchet
3/8 Inch Drive Ratchet
1. Removing the Tensioner
Familiarize yourself with the route of the serpentine belt under the hood or on the radiator support
Insert the 3/8 inch drive ratchet into the tensioner
Turn the tensioner clockwise to loosen the belt
Pull the belt off the alternator
Release the tensioner
Remove the 15mm bolt from the back of the tensioner
Remove the tensioner from the accessory bracket
2. Installing the Tensioner
Make sure the aluminum studs on the tensioner are intact
Insert the tensioner into the tensioner bracket
Reinstall the 15mm bolt
Make sure the serpentine belt is routed properly
Insert the 3/8 inch drive ratchet into the tensioner
Turn the tensioner clockwise to loosen the belt
Pull the belt over the alternator
Release the tensioner
3. Reinstalling the Serpentine Belt
Loop the belt around the crank shaft pulley
Bring it around the water pump
Bring it under the power steering pulley
Bring it over the A/C Pulley
Bring it under the upper idler pulley
Bring it over the lower idler pulley
Bring it around the belt tensioner
Pull the tensioner clockwise with the 3/8 inch ratchet
Pull the belt over the alternator
Release the tensioner
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace this Serpentine belt tensioner. This is a 2008 Ram with the 5.7-liter Hemi V8. It's pretty much the same procedure for a 2003-2008, as well as some other Dodge and Chrysler models. You'll need a new tensioner from 1AAuto.com, a 3/8" drive ratchet, and a 15mm socket.
Here's your serpentine belt. Before removing, you want to make sure you have the diagram for it, usually located under the hood or on the radiator support of your vehicle.
Using drive from the 3/8" ratchet, you'll insert it into the slot on the tensioner, remove the tension from the belt, and take it off the pulley. Remove the 15mm bolt at the back of the tensioner. Remove your tensioner from the accessory bracket. Ensure that the aluminum studs are intact and not broken off in the accessory bracket before installing your new tensioner.
The original part from the vehicle, new part from 1A Auto, couple of the dimensions are a little bit different but it is going to install exactly the same, and if your old tensioner is worn out this new part from 1A Auto is going to fix your problem.
Align the aluminum studs on the inside edge of your tensioner to the holes in the tensioner bracket. Reinstall your 15mm bolt.
Refer to your diagram or drawing to ensure that your Serpentine belt is routed properly. Install your 3/8ths ratchet into your tensioner, release the bolt tension, and install the remainder of your belt over your alternator pole.
If your serpentine belt fell off during the repair, or if you decide to replace your serpentine belt at the same time, here's a quick run through of how to route the belt onto the pulleys properly.
To reinstall your serpentine belt, loop around your crank shaft pulley, bring the top side over the water pump pulley, under the power steering pump pulley, over the A/C compressor, under your upper idler pulley, to the other side, go over your lower idler pulley and around your tensioner.
Using your 3/8"? drive ratchet, remove the tension from the tensioner pulley and install the remainder of your belt over your alternator pulley.
Ensure that your belt is properly seated around the pulleys and installed in the correct path before starting your vehicle.
Thanks for tuning in. We hope this video helped you out. Next time you need parts for your car, please visit 1AAuto.com. Also check out our other helpful how-to and diagnosis videos.
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4.75/ 5.04
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Perfect
Benjamin
March 27, 2020
My original parts were squeaking really badly, got this all on in about thirty minutes. Perfect fit and no more squeaking.
While you're there...
Kevin
August 11, 2020
If you're replacing the pump, this modestly priced kit is smart money.
Nice kit easy install
Isaac
June 11, 2022
Only had it on for like 50 miles but the kit is what it says it is and I trust gates belts. Not the cheapest but easy install and she's quiet and running smooth. The tensioner looks exactly the same which is reassuring and definitely got some good pull.
Great repair experience. Parts & how to.
Mike
September 26, 2024
Fast shipping, OEM specs. Very easy to order for correct fit. PLUS videos to ease installation & minimize mistakes. 1AAuto, A1. Thanks.
Customer Q&A
I can seem to fine the specs for the belt size?October 3, 2022
DANIEL M
10
Actual Measurements are not listed or available. Our parts are exact replacements for your vehicle's OEM parts. As long as your vehicle is listed to fit according to the 'Vehicle Fit' tab, these parts will directly fit and function like the originals.
October 4, 2022
Andra M
Customer service
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