Dodge Repair Questions? Ask a Mechanic for Answers ASAP
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What you found in the bottom were ends of the clips that hold the limited slip clutches together in the carrier. What you saw digging into the housing near the carrier side bearing is what is left of the rest of the clip, it's worked it's way out of the carrier and is milling into the differential housing. The carrier will need to be removed and the clips replaced at the least, if the clutches are breaking away prematurely or they are damaged then the clutch kit will need to be replaced.