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  #1  
Old 08-06-2015, 03:24 PM
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Rotational squeak/chirp

So I JUST got done replacing hub assemblies on both sides of the front end. The ones that I replaced failed the "wiggle test", so I replaced them. I was also hearing a rotational squeak, especially when I had the wheel cranked one way OR the other. It's not engine/accessory, and it's not suspension. The squeak occurs with or without the brakes applied. It sounds like metal on metal.

Any suggestions on where to start looking? I intend to get it up in the air tonight and manually spin the wheels to see if I can dial in.

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  #2  
Old 08-06-2015, 05:12 PM
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Re: Rotational squeak/chirp

Have a look at the drive shafts CV joint boots and the prop shaft joints. So the noise was there before the hub change and still is thereafter?
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Old 08-06-2015, 09:13 PM
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Re: Rotational squeak/chirp

Quote:
Originally Posted by Frango100 View Post
Have a look at the drive shafts CV joint boots and the prop shaft joints. So the noise was there before the hub change and still is thereafter?
Yes it was. I think I had 2 noises simultaneously. I eliminated one when I replaced the hub assemblies. Now it still sounds pretty much the same, at the same times, just slightly less loud.

I put the front axle on jack stands, turned and spun the front wheels by hand. I could not duplicate the noise. The front drive shaft and associated joints appear fine visually, as do the CV joints. Boots are fine, no grease oozing. I soaked the U-Joint immediately behind the front differential case with white lithium grease and will listen tomorrow to see if there was any change in the sound. I really don't think that's it because it's louder when I'm steering sharply. I did a few slow circles today in a parking lot and it was there. As soon as I straightened up, it shut up.
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Old 08-07-2015, 07:02 AM
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Re: Rotational squeak/chirp

No change in sound at all....
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Old 08-07-2015, 09:56 AM
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Re: Rotational squeak/chirp

Does the sound come from something externally, or could it be internally? Did you check the T-case fluid and was it changed not long ago? Did you check the front diff fluid level and take a sample to see if there is any metal flakes in it?
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Old 08-07-2015, 10:47 AM
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Re: Rotational squeak/chirp

Quote:
Originally Posted by Frango100 View Post
Does the sound come from something externally, or could it be internally? Did you check the T-case fluid and was it changed not long ago? Did you check the front diff fluid level and take a sample to see if there is any metal flakes in it?
Oh, it's external....I don't believe this is coming from the diff case itself or the transfer case. Both are topped up, and relatively fresh (just did this spring). Can a CV make a squeaking noise?
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Old 08-07-2015, 01:19 PM
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Re: Rotational squeak/chirp

Found it.

Turns out it's the 2nd u-joint forward of the transfer case. The whole drive shaft is coming out, and 3 new greasables are going in.

I couldn't replicate it with it up in the air and spinning tires by hand, but I was able to replicate it by getting the whole thing off the ground and running it.

I said grease and shaft....giggity.
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Old 08-08-2015, 02:02 PM
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Re: Rotational squeak/chirp

Quote:
Originally Posted by TJXJWJ View Post
Found it.

I said grease and shaft....giggity.
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Old 08-10-2015, 09:46 PM
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Re: Rotational squeak/chirp

Holy crap, does it feel so much smoother now! I must have gotten used to crappy U-joints on that front shaft!
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