Diferential Noise - Ford Mustang Forum
 
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post #1 of 9 (permalink) Old 08-07-2012 Thread Starter
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Diferential Noise

About a month ago I changed the pinion seal on my 2006 GT. All went well until I started looking around on the internet and got into this "crush sleeve". I am almost positive that I overloaded the bearing and now there is a noise coming from the rear end but, only when I turn though. I'm thinking that it is the bearing making the noise but not for sure. Also, if it happens to be this "crush sleeve" how difficult would it be to change?

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post #2 of 9 (permalink) Old 08-07-2012
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Why do you think you overloaded your bearing? Did you apply excessive torque wen reinstalling the pinion yoke? It takes a lot of force to crush the sleeve. If you were just going by feel, there is a good chance you would have under torqued it and do not have enough load on the bearings.

You could check it with a dial torque gauge. You would want to pull the axle shafts out of the differential to do that so you aren't spinning the shafts and getting a reading that is artificially high. I don't know what the spec is for rolling torque on the pinion, but I'm sure someone else can provide that.


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post #3 of 9 (permalink) Old 08-07-2012
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Did you add the right amount of friction modifier to the gear oil?
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post #4 of 9 (permalink) Old 08-12-2012 Thread Starter
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Did you add the right amount of friction modifier to the gear oil?
This was a very controversial subject in Oriely's. I put two quarts of royal purple on the counter and a bottle of champion additive and the guy told me that I wouldnt need it so I took his word for it. Long story short the differential has 2Oz. or less of the same additive with royal purple 70 140w.
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post #5 of 9 (permalink) Old 08-12-2012 Thread Starter
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Quote:
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Why do you think you overloaded your bearing? Did you apply excessive torque wen reinstalling the pinion yoke? It takes a lot of force to crush the sleeve. If you were just going by feel, there is a good chance you would have under torqued it and do not have enough load on the bearings.

You could check it with a dial torque gauge. You would want to pull the axle shafts out of the differential to do that so you aren't spinning the shafts and getting a reading that is artificially high. I don't know what the spec is for rolling torque on the pinion, but I'm sure someone else can provide that.
Well I used an impact gun and cranked the sucker down.
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post #6 of 9 (permalink) Old 08-12-2012
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I would throw 4 oz. of Ford Racing friction modifier in it. Cheap cure maybe? Summit has it for $3.50 a bottle.
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post #7 of 9 (permalink) Old 08-12-2012
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Quote:
Originally Posted by 6806stang View Post
This was a very controversial subject in Oriely's. I put two quarts of royal purple on the counter and a bottle of champion additive and the guy told me that I wouldnt need it so I took his word for it. Long story short the differential has 2Oz. or less of the same additive with royal purple 70 140w.
Did almost the exact same thing but at Autozone when I redid the seal in my 01 F-150. First time I drove it I could hear the limited slip was ef'ed up. Its probably too late now and it needs to be rebuilt or replaced with something better.
post #8 of 9 (permalink) Old 08-15-2012
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You have a clutch problem, not a bearing problem. If the noise is only there when you are turning a corner then it's not the bearings, it's the clutches. The oil additive that is sold at the auto parts stores is junk and doesn't work most of the time. Go to Ford and get the correct additive for the oil and the problem will go away in a few days. If the guy at the auto parts store told you that you don't need the additive then don't go to him for any more advice.

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post #9 of 9 (permalink) Old 08-15-2012 Thread Starter
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Quote:
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I would throw 4 oz. of Ford Racing friction modifier in it. Cheap cure maybe? Summit has it for $3.50 a bottle.
worth a shot before i go rebuilding it huh.
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