Terrible Squealing

[ova50]

Apart from spinning it as Threedogs has suggested, what should I be looking, hearing or feeling for ?
Should this be harder to spin in any direction?
Thanks

[threedogs]

try like you would for a wheel bearing feel for any play,, should be none.
visually it may have iron filings or reddish colour showing, can you put a pic up?
so we can see.
Im 99% sure thats where the noise is coming from at this stage.

[ova50]

Hopefully I will be able to inspect it tomorrow afternoon.
A quick look at the pulley (from what I can see), there doesn't appear to be any discolouring/ metal fillings or anything that looks suspicious.

It's awkward to get a photo of it, The induction hoses are in the way.
There is not much room to even get my hand to the pulley because of the top radiator shroud.
To remove the shroud it looks like the intercooler and its mounting brackets may have to be removed.

When I replaced the tensioner I done it all from underneath, (bit of a pain to get the new belt up to the alternator though)
It may be easier to remove the alternator.

[threedogs]

bumped for an update

[ova50]

Inspected the Alternator Pulley, removed the plastic cap and it shows no signs of any foreign matter around the pulley or on the alternator.

I spun the pulley by hand and again all seemed ok, no noises from the alternator.
Next I locked up the alternator and rotated the pulley counter clockwise by hand.
It has a little resistance (which I assume it should), There does not appear to be any tight or loose spots when doing this, the resistance is constant.
Next I tried to turn it clockwise and it would not turn (while still having the alternator locked).

Also gave the air cond pulley a spin by hand. There may be a very slight noise but I don't think it is serious.
I refitted everthing, started the engine and had look at all the pulleys, all appeared to be spinning in alignment and the tensioner was remaining stable.
Made up a stethoscope and listened at the alternator and air cond compressor. Again nothing that sounded out of the ordinary.
I then put it in gear, brakes on and accelerated, putting some load on. Again nothing.

Went for a short drive, and again up a slight hill the squeal happens with revs at approx. 2600 to 2800.
Will ad that the squeal was not as bad as the one I posted on youtube because I was using less throttle and lower revs.

I have posted another 2 sound vids on youtube.
I drove the vehicle around the same block on two occasions and at approx the same speed and revs with a slight hill.

The first is: https://www.youtube.com/watch?v=7DmmpQmJJj4
I mounted the video camera under the bonnet between the top radiator shroud and next to the air cleaner. (please read the full description on Youtube)

The second is: https://www.youtube.com/watch?v=mtJKbsJRUWI
I mounted the camera on the passengers side chassis near the spring. (please read the full description on Youtube)

[peterbr1]

Wow this has to be driving you nuking futs by now, I too have a very noticeable squeal but only when I first start it up, the squeal started around 3 months ago after going through a large puddle whilst bush bashing I've tried everything egr pipe new belt tensioner bearing etc. etc. yours sounds like something's cracked and vibrating or a bolts loose and rubbing somewhere have you sussed out the turbo heat shield,

[ova50]

Wow this has to be driving you nuking futs by now, I too have a very noticeable squeal but only when I first start it up, the squeal started around 3 months ago after going through a large puddle whilst bush bashing I've tried everything egr pipe new belt tensioner bearing etc. etc. yours sounds like something's cracked and vibrating or a bolts loose and rubbing somewhere have you sussed out the turbo heat shield,

You are right about it driving me nuts.
I have looked over and check quite a few things. It seems more predominant on the front passengers side.
The heat shield is secured ok.
It's got me stuffed.

[4bye4]

Long shot but have you tried putting a bit of soap or spraying belt grip on the belt and see if it changes. This is only a suggestion to try and locate the noise - not a fix.
Oh and someone give maasa2002@gmail.com a manual.

[ova50]

Long shot but have you tried putting a bit of soap or spraying belt grip on the belt and see if it changes. This is only a suggestion to try and locate the noise - not a fix.
Oh and someone give maasa2002@gmail.com a manual.

I also fitted a new Gates belt, I will try what you have suggested tomorrow.

I'm not giving the guy above a manual, I thought he had come up with a "fix" for me.
Man, was I disappointed with "great information" On What??

[ova50]

Followed what "4bye4" suggested giving the drive belt a smear of some soap.

Went for a drive this morning for about 2ks, and seemed to be ok until I was driving up a small hill on the way back home.
Thanks 4bye4.

Next was, attempting to isolate what the hell it is.
I had my wife rev the engine to 2500rpm and then switch the engine off while I filmed around the engine bay.
At one stage I locked the viscos fan and filmed again.

When watching the video I noticed that there seems to be some end float movement on the Alternator pulley upon engine shut down,
and a definite noise coming from the area.
I have posted the video on Youtube https://www.youtube.com/watch?v=GT1U10DmgxQ
At approximately the 1min 3sec point, the video is in slow motion and shows the movement on the pulley.

I am guessing that this movement should not be happening and the belt is misaligning at particular revs and load ?
Is it possible that the soap may have masked the squeal until it had worn off ??