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Old Jun 19, 2015 | 11:34 PM
  #1  
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Rear diff

So I have a 06 350 and I'm gettin clunkin from drive to reverse and now with drive too, I know my rear diff is on it's last days but I am Woundering if that could cause the clunking and now my truck around 90km shakes likes crazy and same thing wana know if that's the diff.
And if I was to fix diff myself would it not just be easier for me to just swap axles if I wanted to be cheap??
 
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Old Jun 19, 2015 | 11:36 PM
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Check ujoints??
 
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Old Jun 19, 2015 | 11:38 PM
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Yep and there all fine I know diff is done just need to know if that's the root cause of all the problems
 
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Old Jun 19, 2015 | 11:54 PM
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I would check your carrier bearing for the vibration, and grease the slip joint with Motorcraft PTFE grease to address the clunk.
 
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Old Jun 20, 2015 | 03:19 AM
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Originally Posted by Shaneb75
I would check your carrier bearing for the vibration, and grease the slip joint with Motorcraft PTFE grease to address the clunk.
I second the slip joint. BTW the Ford Motorcraft PTFE grease will look and feel
thin but works the best. Clean the old stuff out and apply the new to the joint
per the instructions and that should solve any slip joint clunk.


Sean
 
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Old Jun 20, 2015 | 06:57 AM
  #6  
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Originally Posted by Yahiko
I second the slip joint. BTW the Ford Motorcraft PTFE grease will look and feel
thin but works the best. Clean the old stuff out and apply the new to the joint
per the instructions and that should solve any slip joint clunk.


Sean
i need to grease everything again also.
can i get the PTFE grease at the local stealership?
also can i use this grease on other things like ball joints and such?
 
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Old Jun 20, 2015 | 07:41 AM
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Originally Posted by evan1242
i need to grease everything again also.
can i get the PTFE grease at the local stealership?
also can i use this grease on other things like ball joints and such?
Yes, you can pick it up at the dealership, but I think I also saw it on Amazon. I don't know what all the applications are for the PTFE grease, but I don't think ball joints would be one of them.

It comes in a small sqeaze tube, not in a grease gun type of tube...
 
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Old Jun 20, 2015 | 07:52 AM
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Originally Posted by evan1242
i need to grease everything again also.
can i get the PTFE grease at the local stealership?
also can i use this grease on other things like ball joints and such?
Motorcraft part # XG-8. Got it from my local dealer for less than $10.
 
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Old Jun 20, 2015 | 07:52 AM
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Originally Posted by Shaneb75
Yes, you can pick it up at the dealership, but I think I also saw it on Amazon. I don't know what all the applications are for the PTFE grease, but I don't think ball joints would be one of them.

It comes in a small sqeaze tube, not in a grease gun type of tube...
gotcha. ive been using the red n tacky grease that i use on all my timken bearings at work. seems to work fine.
will get PTFE grease for that though. i think i have a small clunk also from a dead stop.
 
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Old Jun 20, 2015 | 08:49 AM
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Originally Posted by npccpartsman
Motorcraft part # XG-8. Got it from my local dealer for less than $10.
That's amazing. I didn't know the stealership would sell anything for less than 150.00
 
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Old Jun 20, 2015 | 03:27 PM
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Originally Posted by "Phatman"
That's amazing. I didn't know the stealership would sell anything for less than 150.00
That is not fair. I got rear brake rotors for $133!
 
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Old Jun 20, 2015 | 03:52 PM
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The PTFE is Teflon based and should only be used on the slip
joint. You will find that it seems too thin for what it does. But
it works and the clunking will go away. Thick grease is one of
what causes it to clunk. Does not let things slide the way they should.


Sean
 
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Old Jun 21, 2015 | 06:32 AM
  #13  
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Picked mine up Friday for $7 and some change.
 
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