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FB Differential Carrier Bearing Play?

Old 09-29-09, 12:12 PM
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FB Differential Carrier Bearing Play?

Hey there, just picked up an 85, with an 83 or earlier rear end (discs/LSD) and it had a few issues... the back brakes were dragging, so I fixed those, new lines, etc. Brakes are good now, rear wheel bearings were f'd so replaced those, but there is STILL a metal on metal sound. I pulled the diff and checked the ring/pinion backlash, looks good, oil was good no metal shavings or anything in there, swapped to royal purple... There was however a little play in the carrier bearing, especially on the passenger side. So question is, how much play should there be in the carrier bearings? Thanks!
Old 10-12-09, 02:11 PM
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Anybody have any input on this one? I spoke with a guy at a local autocross this past weekend and he said that it's most likely the pinion bearings causing all the noise. However, the carrier bearings have maybe 1/16th inch play in them and he was saying that play should be almost unnoticeable? Is that true? Anybody have a link to data on this, the shop manual I have doesn't seem to have a lot of info on this part, it just says to take it into a shop, but I'd like to rebuild it myself. I just want to diagnose the issues first.


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