Rear Differential Clutch Pack - Ford Powerstroke Diesel Forum
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Old 06-17-2013, 08:21 AM Rookie

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Rear Differential Clutch Pack

More warranty work done on my 2010 F350 6.4 L Diesel.

There was a strange chatter I noticed when pulling away from a stopped position into a turn. The best way to describe it was that it felt like it was stuck in 4x4.

After 3 days in the shop they replaced the clutch packs in the rear diff at no charge to me....

Apparently this is a common problem.

Part # F81Z*4947*AA (Differential Kit)
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Old 06-17-2013, 09:31 AM
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Same here...twice, and needing it done again!
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Old 06-17-2013, 02:16 PM

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Thumbs up

How many miles?

My Trac Lok was smoked after ~14,000 miles of regular driving...even ended up stuck in the yard at my other house ($300 tow bill later as two trucks had to pull me out) as the front end sunk down some. As you know the front axle is open, so I was stuck with two open axles. Funny now, I was pissed off bad then.

Mid '09 build here. I had it pulled and installed a True Trac after arguing with the dealer that a limited slip differential should actually grip with BOTH rear tires going forward and not spin just one.

Shop disassembled the TL for me on a bench, clutches were black. Just tossed it in the scrap heap. LOVE the True Trac, nothing to wear out, grabs fantastic.
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