Quote:
Originally Posted by bgkast
It does not look like the rear disk can catastrophically fail. The drive shaft has a hole that engages a pin on the rear differential. If the disk were to fail the shaft would spin, but not flail about causing damage. The front disc is a different matter though...
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There's a similar pin on the front disk of mine. But if there is a side load caused by a failed disk, this may also fail. I don't know.
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After writing this, I thought of something. The center bearing would keep the rear part of the driveshaft from migrating forward, but it will not prevent the front part from migrating rearward on the spline. That pin is no reassurance on the front.