rear end slams when braking - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 02-20-2013, 09:58 AM Thread Starter
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rear end slams when braking

I got a 05 350 dually. When im driving I feel a grinding feeling in the rear end then when I start to break it breaks loose and then brakes fine. There's also a feeling every once in awhile when I go around the corner of grinding. I looked at the gears there still good that brakes are too. I'm trying to fine the problem before something bad happens. Thanks
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post #2 of 3 Old 05-11-2013, 04:22 PM
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I see you haven't got any replies to this one. I'm having a similar issue and based on research and talking to a Wrench that I know I'd be suspicious of your limited slip clutch in your rear end.

If that is the case you may (not likely based on your symptoms) be able to correct it by replacing the oil and adding the Ford "friction modifier." If not you need to replace the clutch.

I'm just starting to look into seeing whats involved with that.

If your still dealing with it good luck. If you have corrected it let us know what it was and how you fixed it.

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post #3 of 3 Old 05-12-2013, 07:58 AM
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Had similar issues with mine. Usually when braking I would hear a clunk then as the tranny downshifts to 2nd and first I would hear a winding noise. Turns out my rear-end was completely gone. Clutches, bearings, and gears. ****ty thing is I spent the coin on an aftermarket cover that holds more fluid and changed it out around 100k (recommended by ford). Still didn't help. Repair bill was $1,260. Hoping this one lasts atleast another 100k.

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