2009 Mercury Mountaineer V8 4.6L Accessory Drive Belt Tensioner TRQ BPA03796

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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 a serpentine belt tensioner on this 2005 Ford F150 with the 4.6L V8 engine. The items you'll need for this are a new serpentine belt tensioner from 1AAuto.com, a 1/2" ratchet, piece of pipe for some extra leverage, a 10mm socket and ratchet, a torque wrench, and a flat blade screwdriver.

Using your screwdriver, just loosen up the hose clamp here and right here. Then push the tab on this hose and pull it free. Then pull your air intake hose free.

Now, your serpentine belt tensioner is located right down here. Using a 1/2" ratchet or breaker bar you just want to insert it into that square hole on the tensioner. Then, using a piece of pipe for some extra leverage, just pull the tensioner back and it will loosen up the belt. You can lift the belt up and off the alternator. Then just carefully let the ratchet back down and pull it free. Now you can pull your belt up and out.

Reach way down and pull the belt off of the AC compressor pulley first, which is way down to the left as you're looking at the front of the engine. Then, once it's off of that, go down and pull it off of the crank pulley, which is right in the center of the engine.

Now to remove your tensioner, you want to remove these three 10mm bolts. We'll fast-forward as Mike removes those. You can see he decided to use air-powered tools here. You can do that as well. It just speeds up the process. Then your tensioner will pull free. On the bottom is the old serpentine belt tensioner; above it is the new one from 1A Auto. You can see they're identical and they'll fit exactly the same.

We're just going to put our old one back in because it works fine. Just feed your serpentine belt tensioner back down into place with one bolt at the top already in. Then, once you get it lined up, just tighten that bolt in by hand, and then replace the other two bolts and tighten them all up. Then torque each of these to 25 foot-pounds.

Now you want to follow this belt diagram as you're putting the belt back on. You can reference it again throughout the process. Mike's also going to explain the easiest way to put the belt back. First step for putting the belt on is to make a sharp bend in your new belt. You want to feed that between your tensioner pulley and the idler pulley and go down that way. Need to help it along a little bit here. As that loop goes down, reach down, and this is your AC compressor down here. Put the loop down and around your AC compressor. Now, I'm going to take a loop and loop it down. It's going over the tensioner pulley, but I'm going down and around the crank pulley. Then hopefully you can see on the crank pulley, make sure it gets onto the crank pulley. Then a little tight up and around the water pump pulley here. Then there's an idler pulley, and your power steering pump pulley. I'll leave it off of the alternator for right now. Loop it around the power steering pump pulley over here, around this idler pulley.

Take my pipe, pull as far as I can on the tensioner. I should be able to lift the belt up. I'm going to try and take it off of this idler pulley, get it up onto the alternator, pull my tensioner, and then push the belt down. You can see the idler pulley's the last one, so push it right down under. Replace your air intake hose. Reconnect this hose and then tighten up those two hose clamps.

We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

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 the serpentine belt tensioner on this 2003 Mercury Mountaineer with the 4.6-liter V8 engine. It's the same part and similar process on most of the Ford, Lincoln, and Mercury trucks that have this same engine. The items that you'll need for this include a new serpentine belt tensioner from 1AAuto.com, 1/2 inch socket bar or ratchet and pipe, long screwdriver, 10mm socket and ratchet, and a torque wrench.

The easiest way to get to your tensioner is from underneath. It's right up here, you just take a 1/2 inch ratchet and push it into that square hole on your tensioner. Using a pipe for extra leverage, it makes this a lot easier. You just pull back, release the tension on the belt, and you can pull it free from this pulley. Then when you release the tension on the ratchet, you actually have to take the fan and make sure it doesn't get caught on the wrong side of the handle. Pull it out like that and then pull your ratchet out.

Now I'm going to reach down, and pull the belt off of the pulley where we already loosened it up, and then you can pull this up and out. You've just got to be careful not to get it caught on the fan too much. I'm going to reach way down on this side and I'm going to put my hand in there like that. I can feel the belt and I can pull it up off the pulley that's down here which is if you look on the diagram, I'm pulling it off of this pulley here and while I'm pulling it off of that pulley, I'm going to pull up on the belt because you have to basically pull it right in between this space here. I'm just guiding it up through there. Now the only place it's on here is the big crank pulley. Again, I'm just reaching down and I just have a hold of the belt right here, I'm pulling it out away from the engine to try and get it off of the crank pulley. If I can reach down in here I could pull it out from the crank pulley, pull it out from the water pump, and then just pull the whole thing right up and out.

Now you want to remove these three 10mm bolts on your serpentine belt tensioner. We'll fast-forward as Mike does this. You may realize that we've disconnected that radiator hose, but you don't need to do that, that was just for shooting purposes. Once you remove those bolts, you can just pull that tensioner up and out.

Up top is the old serpentine belt tensioner; below it is the new one from 1A Auto. You can see they're identical, and they'll fit exactly the same.

Take your new serpentine belt tensioner and feed it down into place. You want to find a gap in the fan blades, some of the gaps are slightly larger in between each blade. You want to find one of the larger gaps, feed the tensioner down in, and then once you've got it somewhat lined up start feeding the bolts in and just get them started, each one by hand. We'll just fast-forward as Mike tightens all those up. Now torque all three of those to 30 foot-pounds.

To reinstall your new belt, what you want to do is put a loop down around the crank first and get it lined up on your water pump. then you basically have to kind of jam a loop right down in between your tensioner, down to this pulley, and then you can line everything else up. First, we'll take it and we'll put the loop down between the fan and the water pump pulley for the crank. It's almost like you're lassoing the crank a little bit. You reach way down in there and grab the belt with your other hand and flip it around the crank. Going underneath this pulley here, you can see the belt right there. I just got to get it pushed on the crank and guide it with my hand and pull it up and around. It's on the crank. The back side that comes up, the belt that comes up from this side of the crank. You got to push in and push it around your water pump pulley and push this loop, you push this loop down onto that side for right now. We're not going to worry about it too much. The harder part is taking this part of the belt right here. Once you have it down and around the crank and pull it up.

Then you just want to take. You probably can't see my fingers, but I'm just pushing it between the idler pulley and the pulley underneath. Just take a long screwdriver and push it right down through there. Now if you want to reach up from the bottom, grab that belt, pull it through, and put it down around your A/C compressor here. Now from up here, I'm just going to pull that tight around that A/C compressor pulley. I'm reaching down with this hand and making sure it's on there correctly. Then I'll put this, this has to go down now around this idler pulley, and push it down, and it's somewhat ready to go around these two pulleys here. Basically, I've got my belt, I've put it first down around the crank pulley, and then I went down around the A/C pulley. Now it's on the alternator, it's underneath this idler pulley, and when I pull my tensioner, I'll put it around these two pulleys the rest of the way.

A quick check and see it's on the crank correctly. It's really not on this A/C pulley correctly, so I'm going to lightly pull on it and get it on around there correctly. After I do that I'm going to reach up in here and pull on the belt a little more, that will tighten it up. I'm going to use a flexible bar and basically, what you want to try and do is slide the bar up in there and just try to feed it in. You'll have to push out against the fan as you're feeding this in and get it to go into the tensioner. You want to have it at just a little bit of an angle, not straight up and down, angle it, feed it up in, and you really have to push back against the fan and force the part in there. Get on there and now I can pull that as far as I can. Reach up on this side, put the belt on, make sure the belt is on the power steering pulley.

From down here, we've got the belt on there correctly. It's on my crank pulley correctly and it's on this one correctly. This is the one that I fed it onto right here. I'll take the wrench off and, again, you have to push back against the fan some. Actually my fan's caught. I'm going to pull it. Make sure you feed the fan underneath and out. Now from the topside, you can see it's on the alternator correctly and it's on these idler pulleys and the water pump correctly.

We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Brought to you by 1AAuto.com, your source for quality 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+ 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 install correctly. That's going to save you time and money. Thank you and enjoy the video.

In this video we're going to be replacing the serpentine belt tensioner on this 1997 Ford expedition. This procedure is the same for any Expedition, Excursion, F150, Navigator, even Blackwood; as long as you've got a 4.6L, 5.4L, or even the V10, this is the same. The tools you'll need are 8 mm 5/16 wrench to disconnect your battery, a 1/2-inch ratchet bar, and a bigger wrench to help you get your belt, and then a 10 mm socket and ratchet to remove the bolts. That size could change by vehicle but probably not.

What you want to is disconnect your negative battery cable. On these trucks it's either a this is a standard 5/16, or 8 mm's also work.

Okay, so you're obviously going to have to remove your serpentine belt. The belt tensioner has a 1/2-inch square hole in it, so basically what I'm showing you here is that's a 1/2-inch drive handle that is in the tensioner, so basically you want to take a 1/2-inch drive socket handle and get it into the tensioner. Now I'm going to take a large wrench and actually get it on that handle, which gives me more leverage, and then you pull up on the wrench, and then I'm going to fast motion here. Once you pull the wrench aside, you can pull the belt right off of the alternator. Then you basically you don't have to pull it all the way off, probably get the tensioner out, but you have to pull it at least partway out.

Your serpentine belt tensioner is right here. It attaches with three bolts: one there, one right down there, and one here. Those are 10 mm bolts. Okay, a little fast forward through the kind of monotonous stuff. Don't try to work this fast at home. Goes to here. I've got my wrench on this last one, not a lot of room to get my hand down in there to push. I'm having a lot of trouble with it, so I'm going to do here put this block of wood down in there to contact the wrench, and then use a little old-school impact here. Got it, loosen it up. Okay, and again, after that little tip, we'll go through a little fast forward. And again, do not try and duplicate my lightning-fast hands there.

The tensioner fell off and fell down, and so, there is the tensioner out of the vehicle. Obviously, our tensioners will not be exactly the same. This tensioner is fine, so I'm actually just going to mount it right back on the vehicle, which is going to be fun. The tensioner mounts in this way with the pulley facing in. So what I'm going to do is I'm going to get it down in there, and them I'm going to get this first bolt in, the easiest one to reach. So I feed it down, and I get my hand under here to support the tensioner, manage to the tensioner in place, get that first bolt in. One in place, and then the hardest one will be this right down here. I got all three bolts in place. I'll hand tighten them, and then I'll tighten them up.

Okay, we're going to some fast motion so you won't have to watch all this boring junk. I'm just using a little bit of air ratchet there, a little bit, and then tightening it with my hand.

Once those are tight, then you're ready to put your serpentine belt back on. When you're ready to put your serpentine belt back on, you definitely want to find this diagram right here. This is your routine diagram, and it's really going to be difficult for me to video putting the belt on; so I'm going to kind of show you what the best practice is.

What you want to do is curl your belt up and feed a loop down through here, and then put that loop around the AC compression. Then the same thing: take it, make a loop, feed it down in here to put around your crank, and then feed a loop down here to your power steering pump. Then make sure it's up and over your water pump, and then you basically should be able to pull your belt up, and then you put your handle back into the tensioner here, pull this way on the tensioner, and you should be able to pull up and onto the alternator.

Once you got your belt on, reattach your battery, and start up the car. Listen. Make sure there's no screeching or grinding or anything, and if it's all nice and quiet, then your belt's on there correctly.

We hope this helps you out.

Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the internet. Please feel free to call us toll free, 888-844-3393. We're the company that serves you on the internet and in person.

Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. We're dedicated to delivering quality auto parts, expert customer service, fast and free shipping, all backed by our 100% satisfaction guarantee. Visit us at 1AAuto.com, your trusted source for quality auto parts.

We're going to remove this whole panel. We're going to start by taking off the spare tire jack crank. Take that off and now there's a series of clips they have Phillips head screws in them. We'll show you how to get them out.

There's four across the front. Two more which are missing on this vehicle and then there's two clips back here which are a different style, although I'm pretty sure they should be this Phillips screw style. The way these should come out is you turn them counter-clockwise and very lightly, almost pull up on the screwdriver while you're doing it so they come out. Then once you have that out the whole clip will come up and out. You may run into them where they don't want to come out that easily, in that case you'll probably need a little 90 pick tool, although sometimes you can be successful getting. Sometimes you can get a fingernail under there, but what you'll probably have to do is get a pick tool right in underneath just to pry up a little bit when you turn it and pull it out.

These ones back here are a different style you pry up. Pull the center up and pull it out. Although I'm pretty sure these should be the Phillips screw style. I should have all the clips off, panel lifts up and off. I'm going to remove this cover. Two 10mm bolts on this side and one over on the passenger side. And remove those, 10mm socket and ratchet. Loosen the throttle body clamp with a flat blade screwdriver. Then you just kind of pull up and down on the whole ducting.

There are tubes that go in the side, once you pull it off the throttle body you can twist a little bit and pull those tubes free. Clamp for the air filter, pull that off and there's two connectors. One easy to see here, press down on the tab and disconnect. You may press on the tab, use your screwdriver and pry a little bit to help loosen it up. Connector's off and then there's another connector. Press the tab and disconnect. And the intake tube comes up and out.

Okay, you can see we have a lot of stuff off the front of our engine, which is good so we can show you how the belt routes, but obviously it's going to be more compact for you. Here at the top, the belt's on the alternator, goes down around the power steering pump, back up around your water pump then down and around the crank, up and around your tensioner, back down for your AC pulley and then back up across this idle pulley and to the alternator.

You're going to want to feed a breaker bar up from the bottom. And you're going to have the fan here, but you should be able to reach up and in and get your breaker bar in and grab and pull down. Once you pull down, you can flip it off of one of the pulleys and then release your breaker bar slowly and take it out. And now you can reach down, bring the belt up, flip it off the water pump, and pull it up and out, and then pretty much the hardest part will be get it off your AC compressor, and pull it up through.

Three 10 millimeter bolts hold the tensioner on. One, two, and three. And they're all very reachable from up top. You'll have a little less room because the fan and fan shroud are in the way, but it's still very doable. And as the last bolt comes out, and I always save the top one for last because it's easiest to turn by hand, pull your tensioner up and out.

And to reinstall, put it down in place. Start your first 10 millimeter bolt back in. Torque these to 15 to 22 foot pounds.

Obviously we have a lot of stuff removed. This is so we can show you this process easier but you will have to contend with your fan and stuff. Take a loop between the idler and the tensioner pulleys. Push it down in and you can get it from below but push it down in and put a loop over your AC then take your belt, push it down underneath your crank shaft and put a loop around the crank shaft. Okay and then it comes up, over the water pump and down over the alternator and we'll leave it off of the power steering pulley. That'll be the last part we put on.

We're going to use a half in ratchet and the bigger ratchet you have, the better because you're going to want to feed it up into here, get it into your tensioner and keep in mind your fan will be on for some repairs. Get that ratchet as high as you can and then reach through, pull the tensioner down and then pull your belt onto your power steering pulley. It's not working on the power steering pulley, let it come off the water pump pulley, get it on the power steering pulley, sometimes it's easier to push up and onto the smooth pulley but again you'll have your fan in the way in some places. Then release the tensioner and remove your ratchet.

Put your air intake in place. Back in place over here. The tab winds up there and this clamp goes on. Just reach down and make sure nothing's getting pinched. Lock that down into place and your mass air flow connection, reconnect it. Reconnect this connector. Tube down here goes in there. Flat blade screwdriver to tighten up the clamp that holds it onto the throttle body. Throttle body cover back in place. And kind of move it around a little bit, figure out where the bolt hole is. I'm actually cheating, just looking right through here. See there, start it up and then push this side down into place and start my two bolts over here and then tighten them up.

Put the cover back on. It's in place, you can see all the holes. These back clips, just make sure the center's popped up. Push them down in, push the center in and then these ones across the front, clip in first and just push the center right in to lock it. Put your jack handle back in.

Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.

Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years. We're dedicated to delivering quality auto parts, expert customer service, fast and free shipping, all backed by our 100% satisfaction guarantee. Visit us at 1AAuto.com, your trusted source for quality auto parts.

In this video we're going to be working with our 2006 Ford Explorer. We're going to show you how to move and replace your vehicle's serpentine belt tensioner. If you like this video, please click 'Subscribe'. We have a ton more information on this and many other vehicles. If you need this part for your car, you can follow the link down in the description over to 1AAuto.com. Here are the items you'll need for this repair.

Loosen the clamp on the air box side of the intake duct with a flat blade screwdriver. You'll then want to disconnect the breather lines. There's a little green tab here that you just pull back and pop them off. You'll then need to undo the clamp on the throttle body. You'll then want to remove the intake duct.

For some jobs like your alternator or idler pulleys, it may not be necessary to remove the belt fully. However, if the pulley has been dragging from a bad bearing or a weak alternator, it's probably damaged your belt a bit too and it's not a bad idea to replace it while you're in here.

Using a 1/2" drive ratchet, place it into the square drive of the serpentine belt tensioner and rotate the tensioner clockwise to release pressure and remove the belt from one of the pulleys. It's usually easiest to do this from a smooth pulley. Then carefully release tension and remove your ratchet. Remove the serpentine belt from under the A/C compressor and then pull the loop up and through over your tensioner. You'll then want to get it out from under the crack where it loops over the water pump. You've already unhooked it from the idler pulley on this side so loop it out from the grooved idler pulley and the power steering pump and remove your belt.

Remove the three ten millimeter bolts along the top of the serpentine belt tensioner with the ten millimeter socket and ratchet. You can then remove your tensioner from the vehicle.

Here we have our old tensioner that we removed from our vehicle and our new part from 1AAuto.com. As you can see, these parts are exactly the same with the same half inch square drive, same arm and spring mechanism, the same three bolt mounting flange and the same pulley on the bottom. This tensioner is responsible for keeping your serpentine belt up as tight as it can until the belt has stretched past its limits, however the spring mechanism can fail, overtensioning or undertensioning the belt as well as the pulley itself going bad. If you have any of these problems, this new part from 1AAuto is going to go in direct fit, just like your original equipment, and fix you up right.

Reinstall the serpentine belt tensioner along with its three ten millimeter bolts. Once you've got the bolts started, go ahead and tighten them down with your ten millimeter socket and ratchet.

Now reinstalling the serpentine belt on this is going to be pretty difficult to show. You want to start with a loop and send it down and around the crank pulley. Now you're going to take the passenger side of the belt and bring it down between the tensioner and the A/C compressor at the bottom of the motor. With the right side of the belt, you're going to go up and over the water pump pulley all the way to the button of the motor on the driver side, where you'll go under the grooved idler pulley, as well as under the power steering pump pulley. Install your 1/2" drive into the tensioner and rotate it clockwise to release the belt tension. It's usually easiest to get over the alternator, then move your hand to the other side of the engine and go under the smooth idler pulley on the driver side, and then just use a light or your hand to check the belt path and make sure that everything went over and under all the pulleys currently and that it isn't hung up anywhere.

Reinstall the intake duct and pop on the two breather connections, then tighten it down with a flat blade screwdriver.

Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.