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post #1 of 4 (permalink) Old 05-28-2013, 05:42 AM Thread Starter
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Is it a bad thing...

.. that the nut on the rear diff is finger tight? Noticed this after pulling the driveshaft to replace the support bearing. It had a lock washer on it, so I couldn't turn it off, but its loose on the shaft. And, of course, oil was just pouring past it.

Is this a sign that the bearings in the diff are toast? Or can I just tighten that back up and call it good, after replacing the seal?
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post #2 of 4 (permalink) Old 05-28-2013, 07:18 AM
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It's a bad thing. could be VERY bad.

Before putting in the seal, tighten it up a but and rotate the shaft. does it feel smooth? What was the oil like when you drained it???

Jon '74 GTV RIP Tifosi
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post #3 of 4 (permalink) Old 05-28-2013, 10:26 AM Thread Starter
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Oil looked fine. Clean. The shaft in the diff doesn't have any front/back play, as far as I can tell. Odd that the nut was loose with the locknut holding it in place. Makes me think a bearing failed. I did have some driveline whine, but I thought it was the support bearing since that was bad as well. I'll take a closer look at the differential tonight.
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post #4 of 4 (permalink) Old 05-28-2013, 05:47 PM Thread Starter
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Ooof. Took the nut off, took the driveshaft flange mount off, and the shaft can wiggle up/down. Probably not a good thing. Time to research differential rebuilding...
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