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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 the harmonic balancer on this 2003
Mercury Mountaineer with the 4.6-liter V-8 engine.
The items you'll need for this is a new harmonic balancer from 1AAuto.com, metric socket and
ratchet set, 1/2 inch breaker bar or ratchet, adjustable wrench, fan pulley wrench, wood
(preferably a 2x4), drill and drill bit set, flat blade screwdriver, hammer, pliers, pry
bar, three M8 1.25 bolts, harmonic balancer puller, torque wrench, and drip pan.
Lift up on this panel and pull it free.
Then remove these two 11mm nuts.
Once you remove those, lift the engine cover up and off and then pull the hose free.
Lift up on the tab on this harness and disconnect it.
Pull this hose free and then loosen up this hose clamp with a flat blade screwdriver.
Then just pull that hose free.
Now you just want to lift your air intake box out, so pull those two hoses out, pull
the air intake box from the side of the vehicle, and then lift that and the hose assembly up
and out.
Slide a drip pan underneath.
Then, using a pair of pliers, push the teeth together on this clamp, and slide it back,
and pull the hose free.
You want to lift it up so no more coolant will splash out, and just tuck this end over
here.
Now remove this 13mm nut, and we'll fast-forward as Mike does that.
Remove the bolts that hold either side of the upper radiator shroud and also undo the
clip for the refrigeration line.
Using a 10mm wrench, just remove these fan bolts.
We're going to remove the fan belt.
This is the cheap and easy way, just take a screwdriver and pry it out and off of this
idler pulley down here.
Once you get it off of there, actually pulling up on the belt and off the alternator.
Then just remove the belt the rest of the way.
I'm going to get my 10mm wrench on here, and then I'm going to put my large adjustable
there to hold it.
I'm going to use another wrench to hook on my 10mm to give me some extra leverage and
loosen up that bolt.
For now, I'm going to loosen all four bolts, but I'm only going to remove two so I can
get the tools in there I need to remove the fan clutch.
I'm going to take this tool and the peg goes into the hole there, and then I'm going to
put it right against that stud to hold it.
I think I've got it here.
I use that fan pulley wrench, put it into one of the holes that I had taken one of the
bolts out of.
Then was able to hold onto it and loosen the fan clutch with the larger adjustable wrench.
There.
We're going to use a piece of wood to make a tool to hold the crank.
If you look down here, you'll see I've got three of these, these bolts are M8 by 125.
There are holes in the harmonic balancer pulley.
So I've put those bolts here, and I'm just going to put the piece of wood against them
and hold it on there firm.
Just make a mark at the top of each one.
Here are my three marks.
All right, if I draw a line, let's see, straight between these two, it doesn't have to be perfect,
straight between these two and straight between these two.
That's the center.
I've got my three dots, and then I made a center hole, so I'm going to use a 3/8 drill
that will be big enough for my bolts to have a little movement for adjustment.
Now I'm going to drill an 1/8 inch pilot hole in the middle.
Now we're going to use a 1 inch wood bit because that will allow my socket to get through there
pretty easily.
I've got my wood.
This is the large hole that the socket and ratchet can go through to the crank bolt.
I'm going to bolt it on with my three other bolts.
Now you can see I've got my board on there, and that can actually hold the crank shaft.
18mm socket and ratchet right through that large hole.
The board will let you hold the engine in place while you remove the bolt for the harmonic
balancer.
This is a harmonic balancer puller tool.
You can see we've threaded this on, we're going to put this end on it so that it doesn't
go down the crank, and then we're going to use our three long bolts and bolt the three
bolts to the harmonic balancer.
You can see we've got our puller mounted with the three bolts into the balancer, and we
just tighten up the puller and pull it free.
Now just pull your harmonic balancer up and out.
Now you want to line up the slot on the harmonic balancer with the tab on the engine and push
it back into place.
I'm just going to tap it in and make sure it's all the way into place.
Once it's all the way in, you can replace that bolt and just tighten it up.
You can see I just have my harmonic balancer holder in, but I'm going to put the wrench
on here, and I'm going to torque this to 70 foot-pounds.
We did put the water pump pulley on with just two bolts that are hand tight for right now.
If you get a little lost following Mike on this next clip on how to put the belt back
on, you can just refer to this belt diagram.
All right, we're going to feed the belt right down through here, down onto our A/C pulley,
over the tensioner, down onto our harmonic balancer crank shaft pulley, up around the
water pump, down around here, around our steering pulley.
Up on the alternator first, all the way down on this idler pulley.
All right, feed your lower fan shroud in, passenger's side down in first, and push it
over and feed the driver's side in.
Then you want to pull the passenger's side back up and get the mounting ear below the
radiator hose down there.
Let's see.
You've got to push this mounting ear down past these two transmission cooler hoses and
into place.
Take your radiator fan, push it back into place, and once you get lined up just twist
it back on.
Use your fan pulley wrench and your adjustable wrench and just tighten up the radiator fan.
Take your radiator hose and push it back into place.
Slide the hose clamp back up.
Now replace the other two bolts in your fan pulley
and replace the four bolts in the actual radiator fan.
Take your air intake box and push it back into the side of the vehicle.
Make sure nothing's in the way underneath it.
Push it down into place.
Now take the hose and feed underneath the line here and reconnect these two smaller
hoses to the air intake hose.
Push the intake hose back into place.
Reconnect this harness and then tighten up the hose clamp.
Lower the upper fan shroud back down into place.
Then once you get it lined up, replace the two bolts and tighten them up.
Then close those clamps back onto those lines.
We hope this video helps you out.
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service on the Internet.
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